Preparation of HPMA and Its Application in Durable Press Finishing of Cotton Fabric

A series of hydrolyzed poly(maleic anhydride)(HPMA) is synthesized by using maleic anhydride as the monomer and hydrogen peroxide as the initiator.The effects of reaction temperature,reaction time period and amount of initiator on the double bond residue in the products are studied to decide a suitable synthesizing process.Thepreferable amount of the initiator is 50 wt％,and thepolymerization should be carried out at 105℃ for two hours.Cotton fabrics are finished with the synthesized products and several commercial HPMAs,respectively.And the performance properties of the finished fabrics are compared.The fabric finished with the synthetic HP-MA using the above-mentioned synthesizing process isimparted a high wrinkle recovery angle.

The Effects of Dyeing and Finishing Pretreatment Process to the Sliver Fiber Shielding Fabric and the Reasons

Through the silver fiber and cotton mixed silver fiber shielding fabric,not only soft and comfortable,it can wear personal,but also has excellent anti electromagnetic shielding effect. Fabric in dyeing and finishing process,may cause some damage on the silver fiber,influence the shielding performance of shielding fabric. Therefore,in this paper,through the experimental and analysis,find dyeing and finishing process may affect silver fiber shielding fabric and the reasons.

Anti-Bacterial and Flame Retardant for Cotton Fabric by One-Bath Finishing

A research on the process of cotton fabric flame-re-tarding,anti-bacterial finishing and one-bath finish-ing of anti-bacterial and flame-retarding is discussed.The flame retardant agent was phosphorous-contained,and the bacteriostatic finishing agent named SFR-1 wassynthesized.The flame retardancy of the fabric finishedcan meet the DOC FF3-71 Children Sleepwear Stan-dard.Its bacterial inhibiting capacity can meet and ex-ceed the requirements of similar products

Application of Microwave Technology in Cotton Fabric Dyeing with Reactive Dyes

The influence of different factors on dyeing depth was explored when the cotton fabric was dyed with KN reactive dyes by microwave radiation,and the rubbing fastness and soaping fastness of the fabrics by conventional dyeing and microwave dyeing are determined.In addition,we also researched the effects of microwave heating on the dyeing properties of different dyes.The results show that: the dyeing time of cotton fabric by microwave heating can be greatly shortened,and the dyeing performance is similar to conventional dyeing process.

Dyeing of S/J Cotton Knit Fabric with Natural Dye Extracts from Green Walnut Shells: Assessment of Mordanting Effect on Fastness Properties

In this study, aqueous extraction method is used because of its high extraction ratio, light fastness and also functional properties. In 1st phase, for dyeing S/J cotton knit fabric with green walnut power ferrous sulfate is considered as a mordant. In this study, three different mordanting methods such as pre-, meta-, and post-mordanting are conveyed the dyeing process with the state of metallic mordant and without metallic salt mordants. In 2nd phase, in dyeing for fixation ferrous sulfate was considered as mordants. Furthermore, the analysis and evaluation of each colour dyed material was done through following two terms for instance CIELAB (L*, a*, and b*) and K/S values. According to AATCC test methods, colour fastness to washing, crocking, perspiration of the dyed samples is determined whereas according to the ISO standard, the colour fastness to light was estimated and tested. When dyeing was carried out on S/J cotton knit fabric through considering optimum parameter like at 80&degC for 60 min and at pH 4 which showed optimum results. From the results we can see, very good wash fastness was obtained while there is no fading of the colour, whereas the outstanding and moderate level of colour fastness to light and crocking is achieved.

Wrinkle Resistant Finishing of Cotton Fabrics with the Complex System of PBTCA/CA

In this paper,the wrinkle resistant finishing of cotton fabric with the complex system of PBTCA and CA was mainly discussed.The influence of finishing conditions such as the amount of finishing agent and catalyst,curing temperature and curing time were studied.Wrinkle recovery angle(WRA),breaking strength(BS) and whiteness(Wh) of finished fabric were measured.The experimental data indicated that the best finishing conditions were PBTCA 120g/L,CA 50g/L,sodium hypophosphite 50g/L,triethanolamine 20g/L,cured 170℃ for 120s.

The Effect of Temperature Variation on Dyeing Tie-Dye Cotton Fabrics Dyed with Reactive Dye

The improvement of colorfastness properties of tie dyed cotton knit fabrics with reactive dye has been studied. Pretreated cotton knit fabric is use to dyeing for easy absorption and retention of dye. Color fastness properties of any dyed fabric are very important aspects as the end use of fabric depends on these properties. This study is to evaluate the color fastness to washing and perspiration using the method ISO 105-2CS:2002 and ISO105-E04. The fabric is dyed with reactive dye in same concentration but in two different temperature (30°C and 60°C) and with different amount of sodium carbonate (15 g/l, 18 g/l and 20 g/l) respectively. It is observed that the increasing temperature and using related amount of sodium carbonate the fabric absorbs more dye. In 30°C temperature the result of washing fastness is fairly good to very good where in 60°C the result is very good to excellent. Perspiration fastness result is fairly good to very good both in 30°C and 60°C temperature. The result shows very good of all washing and perspiration fastness in 20 g/l sodium carbonate. The result is concluded that the color fastness of tie-dyed samples is improved by the increasing of temperature and higher amount of sodium carbonate.

Short wet-steam dyeing process of cotton fabrics with reactive dyes

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.

Effects of Treating with Laccase on Properties of Dyed Cotton Fabric

A laccase (Denilite ⅡS) was used to treat different cotton fabrics dyed with 0.2 g·L-1 of vat dyes or reactive dyes. The results indicated that the laccase could remove the loosely adhering, unfixed or hydrolyzed dyes from the dyed fabric efficiently, which led to obvious improvements of color fastness. Furthermore, the wavelength of maximum absorbance of the residual solution of dyeing laccase-treated was different from that of the detergent-treated, which implied the laccase could accelerate structural changes of the adhering or hydrolyzed dyes from fabric in treating, resulting in obvious color changes of the residual solution. In addition, excessive laccase also could decolorize a few fixed reactive dyes from the dyed fabric, with a decrease of color strength and less further improvements of color fastness.

Optimization of Finishing Process and Energy Savings in Denim Textile Facility

Denim is widely accepted among exported textile products due to its aesthetics, appearance, and fashion. Practitioners employed several physical or chemical treatments to improve denim qualities in denim finishing operations. So, several treatment processes, including enzymatic, bleaching, singeing, heat set, and ozone finish, are used, which made this processing more energy consumption and time-consuming. Therefore, it is significant to investigate how changing the chemicals and raw ingredients could improve the finishing process, which is environmentally and economically beneficial for sustainable production practices in the denim finishing process. This study’s research design comprises an experimental investigation in a denim plant in Bangladesh. Two different fabrics were chosen to analyze, determining the potential savings of finishing on the denim fabrics’ performance characteristics. By deducting singeing and heat-set processes, the researchers ran an experimental process by maintaining the same length of fabric. Then, the impacts of finishing process optimization on the mechanical, thermal, and comfort parameters of drape, stiffness, and tear strength were examined. The study’s findings demonstrated that this experiment increased productivity and reduced the finishing unit’s energy consumption without compromising the denim fabrics’ quality. This study significantly impacts environmental sustainability by preserving limited energy resources and manufacturing denim finishing processes.

Application Performance of a New Antibacterial Flame Retardant for Cotton Fabrics

An excellent and novel flame retardant and antimicrobial agent,monochlorotriazine triethylphosphite guaridine(MCTPG),which made in the laboratory could treat cotton fabrics and dyeing with reactive dyes at the same time.The dyeing and functional property of treated cotton fabrics is characterized by five variables,each with a different effect on the final product.The best dyeing and flame retardant finishing process of reactive red K and MCTPG:2%(owf)reactive red K,250 g/L MCTPG,40 g/L NaCl,and 60 g/L Na2CO3,the fixation temperature is 90℃,and the fixation time is controlled at 60 min,with a bath ratio of 1:30.The percentage of dye uptake rate can reach 61.9%and the fixation rate is 52.8%.The treated cotton fabric has better flame retardancy and antibacterial property.The limited oxygen index(LOI)reached 26.3%,the after-flame time was 7.1 s,the char length was 65 mm,and the width of the bacteriostatic band of Escherichia coli and Staphylococcus aureus both reached 2.0 mm.

Colour Reflectance Investigation of Decolourized Sulfur Dyed Cotton Knitted Fabric via Ozone Plasma Treatment

Ozone plasma treatment is accessible to be applied on shading adjustment and colour fading because of the capacity of ozone production. It is a green process that treats dyed cotton fabric under dry condition so as to avoid chemical pollutants. This study means to explore colour reflectance of decolourized sulfur dyed cotton texture using ozone plasma treatment. Sulfur dyed cotton textures with various colour depths (0.5%, 1.5%, 2.5%) were set up to be treated different plasma parameters, including ozone air concentrations (10%, 30%, 50%, 70%), water contents in terms of weight percentage (35%, 45%) of fabric and ozone air plasma treatment periods (10 mins, 20 mins, 30 mins). The colour fading result is assessed by the colour reflectance in percentage (R%) utilizing spectrophotometer under CIE standard illuminant D65. The valid colour fading based on high percentage of reflectance was demonstrated from plasma treatment under higher ozone air concentration (50% and 70% ozone in air) and longer time length of plasma treatment (20 mins and 30 mins). The level of water content contained in the cotton fabrics is appeared to have noteworthy relationship with the degree of decolourization.

An Instant-Fixation Method for Application of Reactive Cotton Dyeing

A new instant-fixation dyeing process was presented and applied for the dyeing of cotton fabric with bi-functional reactive dyes, in which electrolyte and alkali were added in the dye bath first, and then the pre-prepared dye solution was dropped continuously. The color depth of dyed fabric with this process was much higher than that with conventional process and the dosage of the dyes could be reduced as much as 35% when the dark shades are dyed. Moreover, the dye fixation could be increased by 10% with the similar color depth. This novel dyeing method can be applied to both woven and knitted cotton fabric.

OBJECTIVE EVALUATION OF SILK FABRICS

In this paper,the technology of objective fabric measurement is applied to arange of pure silk fabrics produced in the Suzhou area of China,including fabricstyles or qualities such as paj,habotai.georgette,crepe de chine,crepe satin andsilk twill in nominal weights ranging from 21 to 82g/ m2 .The instrumentally mea-sured properties of the finished silk fabrics are represented graphically in the form ofbar charts and are discussed in terms of fabric weight,thickness,tensile properties,shear,bending,compression,surface friction and surface geometry.The mean valueand range for the pure silk finished fabrics are reported for selected fabric low stressmechanical and surface parameters. Using the fabric low stress mechanical and surface property measurements re-ported in this paper,the quality characteristics of finished silk fabrics are evaluatedobjectively and compared.The measurements initiate what could become an impor-tant data base for the objective evaluation of finished pure。silk fabrics produced

Harnessing Microalgae Biomass from Lake Taihu as a Natural Biocolorant Source for Sustainable Eco-Friendly Dyeing of Cotton with Ultrasonication

Most water bodies worldwide are infested with algae bloom and Lake Taihu is no exception, various techniques have been developed to harvest microalgae from Lake Taihu as part of the lake cleaning program and this results in a large algae biomass to deal with. This study made use of the algae biomass harvested as a biocolorants source for textile application and also evaluated its dyeing characteristics with mercerized and bleached cotton. The fabrics were dyed with either ultrasound or water bath method. The ultrasound method improved dye extraction yield from 17.8% for the conventional method to 26.7%, which was also enhanced to 33.2% with the addition of HCl (1 cm). The ultrasound dyeing method was effective at improving dye uptake at a reduced dyeing temperature when compared to the conventional method and also produced different shades of color after dyeing with different mordants. The dyed fabrics had good fastness properties for laundry, crocking and light. The dyed fabrics also showed a good ultraviolet protection factor. The use of algae biomass as a potential source of colorants for textile application will provide an alternate dye source that is environmentally friendly.

漆酶催化没食子酸染色阳离子改性棉织物的性能

利用漆酶催化没食子酸,并对聚二甲基二烯丙基氯化铵改性棉织物进行染色。结果表明:漆酶可催化没食子酸聚合,采用一浴一步法和一浴二步法工艺对改性棉织物染色,二者的染色特征值相接近,染色改性棉织物的UPF≥40,亲水性能明显提升,力学性能也有所改善。

涤纶织物分散荧光黄染色及易去污整理

为了改善荧光黄染色涤纶织物的易去污性,以色度坐标和亮度因子β为指标,优化染色工艺和易去污整理工艺。结果表明,荧光黄10G对涤纶织物最佳染色工艺条件为:染料质量分数1.0%(omf),染浴pH为5,染色温度130℃,染色时间40 min;最佳易去污整理工艺为:整理剂质量浓度40 g/L,焙烘温度150℃,焙烘时间60 s。整理后的涤纶织物经10次洗涤后易去污性仍达4级,经30次洗涤后其荧光性能仍可满足相关标准要求,且耐皂洗色牢度和耐摩擦色牢度均达到4级以上。

季铵盐阳离子改性剂的合成及其在栀子黄染色棉织物中的应用

为了提升天然植物染料栀子黄在纤维素纤维上的染色性能,设计合成了一系列以3-氯-2-羟丙基为反应基团、季铵盐为阳离子基团的阳离子改性剂,通过亲核加成反应在纤维素纤维上引入季铵基团,提升栀子黄染料对阳离子改性纤维素纤维的染色性能。借助电喷雾电离-串联质谱法(ESI-MS)、核磁共振氢谱(~1H NMR)对合成的不同烷基链长的季铵盐改性剂分子结构进行表征。通过红外光谱图和X射线光电子能谱图证实季铵盐化合物以醚键形式成功接枝在棉织物上。采用栀子黄染料对改性棉织物染色,比较不同烷基链长改性剂改性棉织物的染色K/S值发现,改性剂烷基链长为12时最佳,上染率为85.46%,K/S值为4.33。进一步研究染色工艺条件对染色织物K/S值、上染百分率以及色牢度的影响,结果表明,在染色温度为80℃,pH值为9,时间为60 min时,经3-氯-2-羟丙基二甲基辛烷氯化铵(CH-12)改性棉织物染色性能最佳,其上染率为88.07%,K/S值为4.71,耐皂洗牢度及耐摩擦色牢度均可达到3级以上。研究结果表明,CH-12改性棉织物可实现无盐染色,且改性织物的上染率、固色率、耐皂洗和耐摩擦牢度均优于未改性织物的传统有盐染色。

壳聚糖基膨胀阻燃涤纶/棉混纺织物的制备及其性能

为得到阻燃且满足实际应用需求的涤纶/棉混纺织物(T/C),选用亚磷酸化壳聚糖(PCS)和γ-哌嗪基丙基甲基二甲氧基硅烷(GP-108)制备阻燃整理剂(PCS/GP),通过一步浸渍法对涤纶/棉混纺织物进行整理,并研究其微观表面形貌、热稳定性能、阻燃性能、拉伸性能以及白度等。结果表明:PCS/GP成功在涤纶/棉混纺织物表面沉积成膜,包裹住涤纶/棉纤维;T/C-PCS/GP呈现典型的涤纶/棉混纺织物二步热降解过程,在700℃时保留有28.5%的残炭量,说明PCS/GP提高了阻燃涤纶/棉混纺织物在高温区的热稳定性能;T/C-PCS/GP的LOI值提升至26.5%,实现了垂直燃烧测试中的离火自熄,残炭扫描电镜照片表明,PCS/GP的沉积改善了涤纶/棉混纺织物燃烧时存在的“支架”效应;T/C-PCS/GP的热释放速率峰值和火灾蔓延指数较T/C分别降低了20%和40%,表明其火灾危险性大幅度降低;锥形量热测试后的残炭电镜照片表明,T/C-PCS/GP能够保留完整的织物编织结构,残炭表面存在明显的膨胀炭层,与垂直燃烧测试结果相符;热重红外测试结果表明,T/C-PCS/GP分解提前,主要影响棉组分热降解并促进其成炭,而高温区的红外谱图表明,在致密炭层的保护下,T/C-PCS/GP的热降解得到抑制。T/C-PCS/GP与T/C-PCS相比,断裂强力提升17%,其断裂强力与T/C的断裂强力相差不大;同时,GP-108的使用改善了T/C-PCS的黄变问题,提升了T/C-PCS/GP的白度。然而,阻燃样品耐久性较差,需要后续改进。