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Textile industry innovations in dyeing and finishing processes:Minimizing environmental impact
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《China Textile》 2024年第4期43-47,共5页
Textiles are one of the oldest industries in the world which has been manufacturing fabrics and materials needed for various purposes.However,the industry has been confronted with some problems regarding its pollution... Textiles are one of the oldest industries in the world which has been manufacturing fabrics and materials needed for various purposes.However,the industry has been confronted with some problems regarding its pollution;specifically the dyeing and finishing processes.As for the given issues,there has been a trend in recent years to come up with more environmentally friendly solutions. 展开更多
关键词 finishing dyeing IMPACT
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Design of the reactive dyes containing large planar multi-conjugated systems and their application in non-aqueous dyeing 被引量:1
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作者 Aiqin Gao Xiang Luo +3 位作者 Huanghuang Chen Aiqin Hou Hongjuan Zhang Kongliang Xie 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2023年第2期264-271,共8页
The development of pollution-free dyeing technology, including anhydrous dyeing and non-aqueous dyeing technologies, has always been an important way and research hot in energy conservation and emission reduction. Des... The development of pollution-free dyeing technology, including anhydrous dyeing and non-aqueous dyeing technologies, has always been an important way and research hot in energy conservation and emission reduction. Designing new structural dye molecules is the key to water-saving dyeing processes.Herein, three reactive dyes were designed and synthesized, which contained large planar multiconjugated systems and multi-reactive groups. The designed reactive dyes are expected to have high affinity and high fixations in non-aqueous or small bath dyeing processes. The reactive dyes were applied in the decamethylcyclopentasiloxane(DMCS) reverse micelle dyeing for cotton fabric. High exhaustion rate of 99.35%, 98.10% and 98.80%, and fixation rate of 95.15%, 96.34% and 94.40% for three dyes, R1,R2 and R3, could be respectively obtained. The dyes can be fully utilized and had excellent dyeing performance, fastness and levelling properties under the revere micelle dyeing. The cotton fabric is like an oil-water separator in the dyeing process, where the dye micelles rapidly absorb and permeate into the cotton fibers. DMCS circulates around the fabric to transfer mass and energy. After dyeing, the solvent can be separated quickly and reused. The new reactive dyes containing large planar and multi-conjugated systems have potential application in green and sustainable dyeing technology with less wastewater and higher utilization. 展开更多
关键词 reactive dyes Non-aqueous dyeing High fixation rate Waste water Synthesis RECOVERY
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Procion MX Dyes在彩色蜡染制作工艺中的应用研究
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作者 余宏刚 《山东纺织科技》 2024年第2期10-13,共4页
文章以彩色蜡染制作工艺为研究对象,将文献研究法与实践相结合,从画蜡技巧、上色与固色原理、艺术表现技巧等方面解读Procion MX Dyes在彩色蜡染制作工艺中的应用原则和技巧。借助Procion MX Dyes的应用,提升了彩色蜡染的艺术表现力和... 文章以彩色蜡染制作工艺为研究对象,将文献研究法与实践相结合,从画蜡技巧、上色与固色原理、艺术表现技巧等方面解读Procion MX Dyes在彩色蜡染制作工艺中的应用原则和技巧。借助Procion MX Dyes的应用,提升了彩色蜡染的艺术表现力和使用价值,为蜡染产业的发展提供了可行性参考。 展开更多
关键词 低温活性染料 彩色蜡染 蜡染工艺 印染工艺 工艺创新
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Application of Tertiary Amine Cationic Polyacrylamide with High Cationic Degree in Salt-free Dyeing of Reactive Dyes 被引量:9
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作者 TENG Xiaoxu MA Wei ZHANG Shufen 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2010年第6期1023-1028,共6页
Tertiary amine cationic polyacrylamide with high cationization degree was used as a new cationic agent to pretreat cotton with dip-pad-bake method. The obtained cationic cotton was dyed with reactive dyes in the ab-se... Tertiary amine cationic polyacrylamide with high cationization degree was used as a new cationic agent to pretreat cotton with dip-pad-bake method. The obtained cationic cotton was dyed with reactive dyes in the ab-sence of electrolyte. The effects of the characteristics of the cationic agent and the pretreatment conditions on dye-ability of reactive dye were investigated. The results showed that the fixation and K/S values of the reactive dyes on the cationic cotton were improved compared with those on the untreated one in the presence of salt. Tests on fast-ness properties of the dyed cotton and fabric quality of the pretreated cotton were carried out and the results showed that wash and rub fastness of the salt-free dyeing were both satisfactory. And anti-crease property,tensile and tear strength,and handling of the cationic cotton were also good compared with that of the untreated one. 展开更多
关键词 tertiary amine cationic polyacrylamide reactive dye cotton fabric salt-free dyeing
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Application of Acid Dyestuffs with Different Molecule Structure in Combined Dyeing and Finishing of Cotton Fabric 被引量:1
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作者 董永春 《Journal of Donghua University(English Edition)》 EI CAS 2005年第2期50-54,共5页
Simultaneous dyeing and durable press finishing of cotton fabrics with acid dyes bearing the different molecule structure and durable press finishing agent (DP agent abbr.) based on modified DMDHEU were investigated b... Simultaneous dyeing and durable press finishing of cotton fabrics with acid dyes bearing the different molecule structure and durable press finishing agent (DP agent abbr.) based on modified DMDHEU were investigated by using the pad-dry-cure process. Some factors affecting the process, such as structure of acid dyes, DP agent, catalysts and curing temperature were discussed. The dyed and finished fabrics were evaluated with respect to color strength, fixation, crease recovery angle, breaking strength and fastness properties. The results indicate that structure of acid dyes has a striking effect on the color strength of dyed and finished cotton fabric. The color strength and dry crease recovery angle of dyed and finished cotton fabric increases, whereas breaking strength decreases with increasing concentration of DP agent. It is necessary for ammonium nitrate to serve as catalyst. It is found that relatively satisfactory properties of dyed and finished cotton fabric can be obtained with appropriate adjustment of treating conditions. 展开更多
关键词 acid dyes molecule structure single step dyeing durable press finishing
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Determining Compatibilities of Reactive Dyes in Pad Dyeing
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作者 Tu Tianmin(屠天民) 《Journal of Donghua University(English Edition)》 EI CAS 2001年第2期14-16,共3页
Compatibilities of reactive dyes were conventionally shown by exhausting curves. But the change of proportion of dyes in padding dyebath was difficult for pad dyeing to be described by these curves. In this paper, a k... Compatibilities of reactive dyes were conventionally shown by exhausting curves. But the change of proportion of dyes in padding dyebath was difficult for pad dyeing to be described by these curves. In this paper, a kind of simulation of pad dyeing process was used to determine dyestuff compatibility in pad dyeing for ramie and linen fabrics. Seven reactive dyes were divided into three groups and tested., The group with Cibacron Yellow C - 2R, Red C - R, and Blue C - R showed very good compatibility both for ramie and linen,and the other two groups of dyes gave out correspondingly low compatibilities in the pad dyeing tests. The results of the method for determining the compatibility of dyes displayed good consistency with the actul pad dyeing process. 展开更多
关键词 reactive dye PAD dyeing compatibility
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Trichromatic Combination Foam Dyeing of Cotton Using Reactive Dyes
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作者 张晓云 赵文杰 +2 位作者 钟毅 徐红 毛志平 《Journal of Donghua University(English Edition)》 EI CAS 2017年第2期206-211,共6页
In order to investigate the optimal foam dyeing process and the compatibility of trichromatic reactive dyes in foam dyeing,varying proportions of ternary mixtures of Remazol Red RGB,Remazol Yellow RGB and Remazol Navy... In order to investigate the optimal foam dyeing process and the compatibility of trichromatic reactive dyes in foam dyeing,varying proportions of ternary mixtures of Remazol Red RGB,Remazol Yellow RGB and Remazol Navy RGB have been used to dye bleached cotton fabric.The results showed that,the optimal dyeing condition in foam dyeing was alkaline agent 15 g/L,stabilizers 0.7g/L,blow ratio 8,and steaming time 1.5 min,respectively.Compared with conventional pad-dyeing,color strength and fixation rate of dyed fabric were higher than those of conventional paddyeing,the dyed fabric had the same washing and rubbing fastness as conventional pad-dyeing and the color shade of dyed fabric was different from that of conventional pad-dyeing.The color triangle,which consisted of 66 dyed fabric samples dyed with trichromatic reactive dyes in different proportions,could provide foundation for computer colorant formulation of the color matching system. 展开更多
关键词 foam dyeing reactive dyes combination dyeing color triangle
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Comparative Study on Dyeing of Cotton, Modal and Lyocell Fabrics Using Bifunctional and Polyfunctional Reactive Dyes
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作者 Md. Ershad Khan 《Journal of Textile Science and Technology》 2020年第1期40-48,共9页
Polyfunctional reactive dyes have been introduced by the renowned dye manufacturers in the recent years for better exhaustion and fixation performance. This paper deals with evaluation of the dyeing performance of thr... Polyfunctional reactive dyes have been introduced by the renowned dye manufacturers in the recent years for better exhaustion and fixation performance. This paper deals with evaluation of the dyeing performance of three cellulosic fibres namely cotton, modal and lyocell with polyfunctional (Avitera Cardinal SE) reactive dye in comparison a bifunctional-(Novacron Brilliant Red FN-3GL) reactive dye. The purpose of this study is to achieve a better understanding of exhaustion and fixation behaviour in dyeing of cotton, modal and lyocell fibres using these two types of reactive dyes. The dyeing was carried out at four different shade% (1%, 2%, 3%, and 4%). Besides studying exhaustion (%) and fixation (%) along with K/S values of dyed fabrics, several other quality parameters e.g. bursting strength, pilling resistance and colour fastness to wash were also examined. Finally, the optimum combination among the three types of cellulosic fabrics and two types of reactive dyes was observed. Lyocell fabric and polyfunctional reactive dyes have been found more sustainable. 展开更多
关键词 Polyfunctional reactive dye EXHAUSTION FIXATION CELLULOSIC Fibre
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DYEING SILK WITH DYES CONTAINING TWO REACTIVE GROUPS
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作者 宋肇棠 《苏州大学学报(工科版)》 CAS 1989年第S1期37-44,共8页
A high utilization ratio in silk dyeing can be achieved by using dyes containingtwo reactive groups.Two types of these dyes were used,one containing twomonochlorotriazinyl groups(Ke reactive dyes),the other containtin... A high utilization ratio in silk dyeing can be achieved by using dyes containingtwo reactive groups.Two types of these dyes were used,one containing twomonochlorotriazinyl groups(Ke reactive dyes),the other containting amonochlorotriazinyl group and a β-sulphatoethyl sulphonyl group(M reactive dyes)The application of these dyes was studled on the laboratory scale.The dyeingwas carrled out by one-step batch method.The dyeing conditions wereoptimized to get the maxlum utilization ratio.They are PH8-9(for M dyes),9(for KE type dyes),salt concentration 50g/1,dyeing temp.80℃ and dyeingtlme 100 min.The utilization ratio was about 80-93% depending on the dyesused.The dyeings showed high resistance towards aeld and alkaline hydrolysis.The hydrolysis was about 1.12%(at PH6.8)to 3.1%(at PH 10.6).It was muchlower than that of dyeings with conventional reactive dyes.The soaping,washing,perspiration and rubbing fastness of dyed silk fabrics were excellent. 展开更多
关键词 UTILIZATION ratio reactive dyes HYDROLYSIS
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Effect of Alkali Concentration on Dyeing Cotton Knitted Fabrics with Reactive Dyes
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作者 Debasree Paul Subrata Chandra Das +2 位作者 Tarikul Islam Md. Abu Bakar Siddiquee Md. Abdullah AlMamun 《Journal of Chemistry and Chemical Engineering》 2017年第4期162-167,共6页
The effect of alkali concentrations has been studied on the color strength (K/S) and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring a... The effect of alkali concentrations has been studied on the color strength (K/S) and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring and bleaching are performed and conventional exhaust dyeing method employed by IR laboratory sample dyeing machine. Various alkali concentrations such as 6, 7, 8, 9 and 10 g/L are employed and other parameters are kept fixed. The color strength (K/S) and color fastness to wash and rubbing are examined and evaluated. It is revealed that with the increase in alkali concentration from 6 g/L to 8 g/L the value of K/S increases and then up to 10 g/L the value decreases. The overall color fastness properties to washing and rubbing for the dyed samples range from good to excellent. 展开更多
关键词 Alkali concentration cotton fabrics reactive dye color strength color fastness.
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Short wet-steam dyeing process of cotton fabrics with reactive dyes 被引量:1
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作者 SUN Fu-yun WANG Zhao-feng FANG Kuan-jun 《科技视界》 2017年第34期38-39,共2页
The effects of Reactive Black 5 utilized to cotton fabrics by short wet-steam process on the dyeing properties were investigated. This study will provide a theoretical reference for short wet-steam process of cotton f... The effects of Reactive Black 5 utilized to cotton fabrics by short wet-steam process on the dyeing properties were investigated. This study will provide a theoretical reference for short wet-steam process of cotton fabrics with bifunctional reactive dyes. The optimal amount of Selilao agent was 20 g/L, while the soaping and rubbing fastness of the dyed cotton fabrics were both reached to 4-5 rating. 展开更多
关键词 wet-steam
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Decolorization of reactive dyes by laccase immobilized in alginate/gelatin blent with PEG 被引量:15
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作者 WANG, Ping FAN, Xuerong +2 位作者 CUI, Li WANG, Qiang ZHOU, Aihui 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第12期1519-1522,共4页
To achieve effective decolorization of reactive dyes,laccase immobilization was investigated.Laccase 0.2%(m/V)(Denilite IIS) was trapped in beads of alginate/gelatin blent with polyethylene glycol(PEG),and then the su... To achieve effective decolorization of reactive dyes,laccase immobilization was investigated.Laccase 0.2%(m/V)(Denilite IIS) was trapped in beads of alginate/gelatin blent with polyethylene glycol(PEG),and then the supporters were activated by cross-linking with glutaraldehyde.The results of repeated batch decolorization showed that gelatin and appropriate concentration of glutaraldehyde accelerated the decolorization of Reactive Red B-3BF(RRB);PEG had a positive effect on enzyme stability and led to an inc... 展开更多
关键词 DECOLORIZATION reactive dyes LACCASE IMMOBILIZATION ALGINATE GELATIN
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Comparison of four supports for adsorption of reactive dyes by immobilized Aspergillus fumigatus beads 被引量:8
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作者 WANG Bao-e HU Yong-you 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第4期451-457,共7页
Four materials, sodium carboxymethylcellulose (Na-CMC), sodium alginate (SA), polyvinyl alcohol (PVA), and chitosan (CTS), were prepared as supports for entrapping fungus Aspergillusfumigatus. The adsorption o... Four materials, sodium carboxymethylcellulose (Na-CMC), sodium alginate (SA), polyvinyl alcohol (PVA), and chitosan (CTS), were prepared as supports for entrapping fungus Aspergillusfumigatus. The adsorption of synthetic dyes, Reactive Brilliant Blue KN- R, and Reactive Brilliant Red K-2BP, by these immobilized gel beads and plain gel beads was evaluated. The adsorption efficiencies of Reactive Brilliant Red K-2BP and Reactive Brilliant Blue KN-R by CTS immobilized beads were 89.1% and 93.5% in 12 h, respectively. The adsorption efficiency by Na-CMC immobilized beads was slightly lower than that of mycelial pellets. But the dye culture mediums were almost completely decolorized in 48 h using the above-mentioned two immobilized beads (exceeding 95%). The adsorption efficiency by SA immobilized beads exceeded 92% in 48 h. PVA-SA immobilized beads showed the lowest adsorption efficiency, which was 79.8% for Reactive Brilliant Red K-2BP and 92.5% for Reactive Brilliant Blue KN-R in 48 h. Comparing the adsorption efficiency by plain gel beads, Na-CMC plain gel beads ranked next to CTS ones. SA and PVA-SA plain gel beads hardly had the ability of adsorbing dyes. Subsequently, the growth of mycelia in Na-CMC and SA immobilized beads were evaluated. The biomass increased continuously in 72 h. The adsorption capacity of Reactive Brilliant Red K-2BP and Reactive Brilliant Blue KN-R by Na-CMC immobilized beads was 78.0 and 86.7 mg/g, respectively. The SEM micrographs show that the surface structure of Na-CMC immobilized bead is loose and finely porous, which facilitates diffusion of the dyes. 展开更多
关键词 ADSORPTION Aspergillus fumigatus IMMOBILIZATION reactive dyes
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Effect of functional groups on sludge for biosorption of reactive dyes 被引量:2
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作者 CAI Junxiong CUI Longzhe +1 位作者 WANG Yanxin LIU Chengfu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2009年第4期534-538,共5页
The sludge, which was collected from a biological coke wastewater treatment plant, was used as a low-cost adsorbent in the removal of reactive dyes (Methylene Blue (MB) and Reactive Red 4 (RR4)) from aqueous sol... The sludge, which was collected from a biological coke wastewater treatment plant, was used as a low-cost adsorbent in the removal of reactive dyes (Methylene Blue (MB) and Reactive Red 4 (RR4)) from aqueous solution. The pH of dye solution played an important role on the dye uptake. With the solution pH increase, the MB uptake increased; whereas the RR4 uptake decreased. The maximum uptake of RR4 by protonated sludge was 73.7 mg/g at pH 1, and the maximum uptake of MB by sludge was 235.3 mg/g at pH 9. Three functional groups, including carboxyl, phosphonate, and amine group, were identified by potentiometric titration, fourier transform infrared (FT-IR) spectrometry, and X-ray photoelectron spectroscopy (XPS). The anionic functional groups, phosphonate and carboxyl group, were identified as the binding sites for the cationic MB. Amine groups were identified to bind RR4. The main mechanism of the reactive dyestuffs adsorption is electrostatic interaction. 展开更多
关键词 SLUDGE reactive dyes MECHANISM
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Preparation of Reactive Bright Blue Rare Earth Dyestuffs and Their Spectra Properties 被引量:2
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作者 Liu Xiaozhen Sang Wenbin 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第z1期210-213,共4页
Reactive bright blue rare earth dyestuffs were prepared by using reactive bright blue and lanthanum oxide,praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, dysprosium oxide, erbium... Reactive bright blue rare earth dyestuffs were prepared by using reactive bright blue and lanthanum oxide,praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, dysprosium oxide, erbium oxide, lutetium oxide, yttrium oxide respectively for dyeing silk cloth.The degree of dyeing of reactive bright blue praseodymium and the degree of fixation of reactive bright blue gadolinium are the biggest, and 22.9% and 7 %are increased with that of reactive bright blue respectively.The spectra of reactive bright blue rare earth and reactive bright blue were studied by UV-VIS.In 200.00 ~ 800.00 nm, reactive bright blue has four absorption peaks, reactive bright blue rare earth has three absorption peaks; in 420.00 ~ 760.00 nm, reactive bright blue has two absorption peaks at 661.50 nm and 625.50 nm, respectively, and λmax is 661.50 nm; reactive bright blue rare earth has one absorption peak at 620.50, 618.00, 622.00, 623.00, 622.50, 619.50, 619.00, 621.00, 624.00, 620.00 nm adding La3+ ,Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Dy3+, Er3+, Lu3+, Y3+respectively. 展开更多
关键词 reactive BRIGHT BLUE UV-VIS absorption spectra DEGREE of dyeing DEGREE of fixation rare earths
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Salt-free reactive dyeing of betaine-modified cationic cotton fabrics with enhanced dye fixation 被引量:6
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作者 Wei Ma Mei Meng +1 位作者 Shumin Yan Shufen Zhang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2016年第1期175-179,共5页
Novel cationic cotton fabrics were prepared by an efficient and simple one-step pad–dry–bake pretreatment process with betaine as cationic reagent. Ester bonds formed between cotton fibers and betaine hydrochloride ... Novel cationic cotton fabrics were prepared by an efficient and simple one-step pad–dry–bake pretreatment process with betaine as cationic reagent. Ester bonds formed between cotton fibers and betaine hydrochloride were proved by Fourier transformed infrared attenuated total reflection(FTIR-ATR) spectra. Moreover, the properties of the cationic fabrics, including X-ray Diffraction(XRD), tensile strength and whiteness and yellowness index,were investigated in comparison with that of the untreated ones. The cationic fabrics were applied in salt-free dyeing of C.I. Reactive Red 195, C.I. Reactive Yellow 145 and C.I. Reactive Blue 19. Different dye fixation processes were applied and compared for untreated and cationic cotton. Dye fixation and color fastness properties of the dyes were tested, and the results presented that dye fixation on the cationic fabrics in the absence of salt was improved with satisfactory light fastness property and applicable wash and rub fastnesses. 展开更多
关键词 Salt-free dyeing Betaine Cationic cotton reactive dyes
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Adsorption of Reactive Dyes on Activated Carbon Developed from <i>Enteromorpha prolifera</i> 被引量:2
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作者 Deshuai Sun Zhongyi Zhang +1 位作者 Mengling Wang Yude Wu 《American Journal of Analytical Chemistry》 2013年第7期17-26,共10页
Activated carbon was prepared from Enteromorpha prolifera by zinc chloride activation. The adsorption behaviors of three reactive dyes (Reactive Red 23, Reactive Blue 171 and Reactive Blue 4) onto this biomass activat... Activated carbon was prepared from Enteromorpha prolifera by zinc chloride activation. The adsorption behaviors of three reactive dyes (Reactive Red 23, Reactive Blue 171 and Reactive Blue 4) onto this biomass activated carbon were investigated in batch systems. The experimental findings showed that the removal efficiencies of three dyes onto activated carbon were maximum at the initial solution pH of 4.5 - 6.0. Thermodynamic studies suggested that adsorption reaction was an endothermic and spontaneous process. Adsorption isotherm of the three dyes obeyed Freundlich isotherm modal. Dye adsorption capacities of activated carbon were 59.88, 71.94 and 131.93 mg·g?1 for RR23, RB171 and RB4 at 27?C, respectively. Second-order kinetic models fitted better to the equilibrium data of three dyes. The adsorption process on activated carbon was mainly controlled by intraparticle diffusion mechanism. 展开更多
关键词 Activated Carbon ENTEROMORPHA PROLIFERA reactive dye ADSORPTION ISOTHERM ADSORPTION Dynamics
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A Novel Approach of Dyeing Jute Fiber with Reactive Dye after Treating with Chitosan 被引量:1
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作者 M. A. Rahman Bhuiyan Abu Shaid +2 位作者 M. M. Bashar P. Haque M. A. Hannan 《Open Journal of Organic Polymer Materials》 2013年第4期87-91,共5页
Jute is generally not dyed with reactive dye though it is a cellulosic fiber. Reactive dye is extensively used to dye cotton, viscose and other cellulosic fibers whereas jute is dyed with basic dye. This paper present... Jute is generally not dyed with reactive dye though it is a cellulosic fiber. Reactive dye is extensively used to dye cotton, viscose and other cellulosic fibers whereas jute is dyed with basic dye. This paper presents a novel approach to dye the jute fiber with reactive dye after treating with chitosan. Jute fabric was treated with chitosan solution at different con- centrations (0.5%, 1%, 2%, 3% and 4%) and then dyed with reactive dye. The depth and fastness of shade of dyed fabric were analyzed by comparing the chitosan treated samples with untreated dyed fabric samples. It has been found that, the dyebath exhaustion is increased with the increment of chitosan concentrations. The exhaustion percentages have found 36.79%, 41.59%, 48.33%, 54.46% and 58.75% for the fabric treated with 0.5%, 1%, 2%, 3% and 4% chitosan solution respectively, while the exhaustion of dyebath is only 23.15% for untreated fabric. The K/S values (at λmax = 540 nm) of dyed samples have found 4.93, 6.77, 10.5, 14.07, 15.57 and 2.37 for 0.5%, 1%, 2%, 3%, 4% and untreated fabric respectively. The color fastness to washing and rubbing of the dyed fabrics was also evaluated. In case of dry rubbing, both types of fabric have shown almost similar fastness ratings. However, chitosan treated fabrics have shown inferior fastness rating in case of wet rubbing and washing, particularly for the fabrics at higher chitosan concentrations. 展开更多
关键词 CHITOSAN dyeing JUTE Fiber reactive dye
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REACTIVE DYES CONTAINING(N-METHYL-β-SULFOETHYLAMINO)ETHYLSULFONYL GROUPS FOR SILK FIBRES
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作者 吴祖望 陶春林 +2 位作者 杨凌宵 林利 田雅珍 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1996年第1期4-13,共10页
Silk dyeing with several classes of reactive dyes was studied.A class of reactive dyes con-taining(N-methyl-β-sulfoethylamino)ethylsulfonyl groups for silk is presented.A new method forintroducing such a reactive gro... Silk dyeing with several classes of reactive dyes was studied.A class of reactive dyes con-taining(N-methyl-β-sulfoethylamino)ethylsulfonyl groups for silk is presented.A new method forintroducing such a reactive group and a kinetic studies on the reaction mechanism involved are pro-posed.A kinetic isotopic effect on dyeing mechanism with silk is discussed and the optimum dyeingtechniques recommended.Dyeing or printing was carried out in neutral media;brilliant shades,goodfastness,high fixation and excellent storage stability are given. 展开更多
关键词 reactive dyes SILK dyeing reaction mechansim dyeing mechanism kinetic ISOTOPIC effect
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Enhanced degradation of reactive dyes using a novel carbon ceramic electrode based on copper nanoparticles and multiwall carbon nanotubes
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作者 Fatemeh Jafari Navid Nasirizadeh Mohammad Mirjalili 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第1期318-327,共10页
A novel carbon ceramic electrode consisting of Cu NPs and MWCNT was developed to treat reactive orange 84(RO84) wastewater using ultrasound-assisted electrochemical degradation. The proposed electrode generated more h... A novel carbon ceramic electrode consisting of Cu NPs and MWCNT was developed to treat reactive orange 84(RO84) wastewater using ultrasound-assisted electrochemical degradation. The proposed electrode generated more hydroxyl radicals than non-nanoparticle electrodes did. In addition, a new electrochemical sensor was applied to determine residue RO84 in an aqueous medium during discoloration. This sensor is based on a glassy carbon electrode modified with gold nanourchins and graphene oxide and can detect RO84 concentration in the range of 1.0–1200 μmol·L^-1 with the detection limit of 0.03 μmol·L^-1. The degradation effects of the modified electrode on RO84 were evaluated systematically with different initial pH values, time durations, and amounts of Cu NPs and MWCNT. The results suggested that the removal efficiency of RO84 was approximately 83% after120 min of electrolysis in a phosphate buffer with pH 8.0 using a carbon ceramic electrode made with 4.0 wt%Cu NPs and 4.0 wt% MWCNT. The possible mechanism of RO84 degradation was monitored by gas chromatography–mass spectrometry, and degradation pathways were proposed. 展开更多
关键词 ELECTROCHEMICAL DEGRADATION Carbon CERAMIC NANOCOMPOSITE reactive dye Copper nanoparticles
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