Polybutylene succinate(PBS)fiber is a kind of synthetic fibers with excellent properties and biodegradability,which has been produced on a large scale in China.To investigate the application properties of PBS fibers,t...Polybutylene succinate(PBS)fiber is a kind of synthetic fibers with excellent properties and biodegradability,which has been produced on a large scale in China.To investigate the application properties of PBS fibers,the structure and properties were systematically studied in this paper.The microstructures and thermal properties of PBS fibers were analyzed by Fourier transform infrared(FTIR)spectroscopy,X-ray diffraction(XRD),scanning electron microscopy(SEM),thermo gravimetric(TG)and differential scanning calorimetry(DSC).The mechanical properties,chemical stability and dyeing properties of PBS fibers were also studied.The results show that PBS fibers areα-crystalline with a crystallinity of 58.56%.PBS fibers have an excellent thermal stability and the initial temperature of thermal degradation is 370℃.The tensile strength,the elongation at break,the elastic recovery rate at a fixed elongation(5%)and the moisture regain rate of PBS fibers are 29.57 cN/tex,90.94%,44.55%and 5.04%,respectively.The chemical stability is as follows:alkali resistance<acid resistance<oxidation resistance.PBS fibers have an excellent dye uptake by carrier dyeing of disperse dyes.展开更多
Reactive dyes are the main species for cotton dyeing due to their wide range of hue, satisfactory color fastness and facile application method. Aiming at increasing fixation on cotton fibers, benzimidazolone yellow re...Reactive dyes are the main species for cotton dyeing due to their wide range of hue, satisfactory color fastness and facile application method. Aiming at increasing fixation on cotton fibers, benzimidazolone yellow reactive dyes, sulfonamide red reactive dyes and anthraquinone azo blue reactive dyes are designed. The preparation, characterization and application properties of these dyes with high fixation are introduced in detail. In order to achieve dye fixation to near 100%, macromolecular crosslinking reactive dyes are designed, their dyeing and fixing mechanism are discussed. These novel reactive dyes show promising application prospect in dyeing and printing of cotton fibers.展开更多
Three new N-alkylsulfonamide-containing phenylazopyrazolone dyes have been synthesized by reaction of sulfonyl chloride intermediates with different saturated aliphatic amines and their molecular structures were confi...Three new N-alkylsulfonamide-containing phenylazopyrazolone dyes have been synthesized by reaction of sulfonyl chloride intermediates with different saturated aliphatic amines and their molecular structures were confirmed by FTIR, (1)H NMR and MS. The dyes were applied to unmodified polypropylene fabric. These dyes showed high exhaustion as well as higher levels of fastness to washing, sublimation and rubbing compared with C.I. Disperse Yellow 16. The results showed the N-alkylsulfonamide-containing dyes were suitable for dyeing unmodified PP fiber and exhibited good color depth and fastness properties.展开更多
A series of phenylazo-β-naphthol-containing sulfonamide disperse dyes were prepared from C.I.Acid Orange 7 by successive reactions of chlorination and amination,and their chemical structures were characterized by FTI...A series of phenylazo-β-naphthol-containing sulfonamide disperse dyes were prepared from C.I.Acid Orange 7 by successive reactions of chlorination and amination,and their chemical structures were characterized by FTIR,1H NMR,and mass spectrometry.The dyes were applied to coloring of knitted fabrics from fine denier polypropylene fibers by exhaust dyeing and their optimal dyeing conditions,such as dyebath pH,dyeing temperature,dyeing time,and dye concentration were investigated in detail.Then,dye exhaustion,color strength,and color fastnesses of the dyes on the fibers were assessed and summarized.In view of dye exhaustion and color strength of the sulfonamide dyes on fine denier PP fabrics,90℃ was selected as the best dyeing temperature at dye concentration below or equal to 3.0%owf.For achieving higher color strength,130℃ was the better choice when the dye concentration was above 3.0%owf.The sulfonamide dyes,especially secondary sulfonamide dyes,exhibited superior dye exhaustion and color fastnesses to washing,sublimation,and rubbing on fine denier PP fabrics in comparison to C.I.Solvent Yellow 14 bearing the same chromophore but without sulfonamide group.展开更多
Mono- and bis-dialkylaminophenylbuta-l,3-dienyl boron-dipyrromethenes (BODIPYs) 1-12 were synthesized in 36%-42% yields by a Knoevenagel-type condensation. The absorption and emission maxima (λabs = 614-739 rim; ,...Mono- and bis-dialkylaminophenylbuta-l,3-dienyl boron-dipyrromethenes (BODIPYs) 1-12 were synthesized in 36%-42% yields by a Knoevenagel-type condensation. The absorption and emission maxima (λabs = 614-739 rim; ,λem = 655-776 nm in CHCI3) of 1-12 covered from the visible to the near- infrared region. Probe I was ratiometric Vis pH probes. Such probe was almost non-fluorescent. Upon the protonation of the tertiary amine function of 1, the strong fluorescence (φf =0.97) was released and the florescence intensity was dramatically increased by one thousand folds. The sharp isosbestic points were discovered at 590 nm, which was a ratiometric pH probe.展开更多
Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicate- clay nano-particles, and have already been used in polymeric coatings to improve mechanical thermal and stabilit...Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicate- clay nano-particles, and have already been used in polymeric coatings to improve mechanical thermal and stability properties. In this paper, the basic blue 41(BB41) was intercalated into Na+- montmorillonite in an aqueous medium. The dye-intercalated montmorillonite was cen- trifuged, dried, and milled to prepare the nanopigrnent particles. X-ray diffraction showed an increase in the basal spacing, thus confirming intercalation of the BB41 molecules within the nanostructures of the interlayer spaces. Fourier transform infrared spectroscopy was used for identifying the functional groups and chemical bounding of Na+-montmorillonite, BB41 and montmor- illonite-BB41. The morphology of NCP was also studied by transmission electron microscopy. Finally, thermo- gravimetric analysis and differential thermograms sug- gested the thermal stability of the intercalated dye was improved.展开更多
基金National Natural Science Foundation of China(No.1073122)。
文摘Polybutylene succinate(PBS)fiber is a kind of synthetic fibers with excellent properties and biodegradability,which has been produced on a large scale in China.To investigate the application properties of PBS fibers,the structure and properties were systematically studied in this paper.The microstructures and thermal properties of PBS fibers were analyzed by Fourier transform infrared(FTIR)spectroscopy,X-ray diffraction(XRD),scanning electron microscopy(SEM),thermo gravimetric(TG)and differential scanning calorimetry(DSC).The mechanical properties,chemical stability and dyeing properties of PBS fibers were also studied.The results show that PBS fibers areα-crystalline with a crystallinity of 58.56%.PBS fibers have an excellent thermal stability and the initial temperature of thermal degradation is 370℃.The tensile strength,the elongation at break,the elastic recovery rate at a fixed elongation(5%)and the moisture regain rate of PBS fibers are 29.57 cN/tex,90.94%,44.55%and 5.04%,respectively.The chemical stability is as follows:alkali resistance<acid resistance<oxidation resistance.PBS fibers have an excellent dye uptake by carrier dyeing of disperse dyes.
基金supported by the National Key Research & Development Plan (2017YFB0307401)the Liaoning Revitalization Talent Program (CLXC1801006)the Fundamental Research Funds for the Central Universities (DUT19TD28)。
文摘Reactive dyes are the main species for cotton dyeing due to their wide range of hue, satisfactory color fastness and facile application method. Aiming at increasing fixation on cotton fibers, benzimidazolone yellow reactive dyes, sulfonamide red reactive dyes and anthraquinone azo blue reactive dyes are designed. The preparation, characterization and application properties of these dyes with high fixation are introduced in detail. In order to achieve dye fixation to near 100%, macromolecular crosslinking reactive dyes are designed, their dyeing and fixing mechanism are discussed. These novel reactive dyes show promising application prospect in dyeing and printing of cotton fibers.
文摘Three new N-alkylsulfonamide-containing phenylazopyrazolone dyes have been synthesized by reaction of sulfonyl chloride intermediates with different saturated aliphatic amines and their molecular structures were confirmed by FTIR, (1)H NMR and MS. The dyes were applied to unmodified polypropylene fabric. These dyes showed high exhaustion as well as higher levels of fastness to washing, sublimation and rubbing compared with C.I. Disperse Yellow 16. The results showed the N-alkylsulfonamide-containing dyes were suitable for dyeing unmodified PP fiber and exhibited good color depth and fastness properties.
基金support from the National Outstanding Youth Foundation of China(No. 20525620)the Program for Changjiang Scholars and Innovative Research Team in University(No.IRT0711)
基金the National Outstanding Youth Foundation of China(No.20525620)Program for Changjiang Scholars and Innovative Research Team in the University(IRT0711)Science Foundation of Zhejiang Sci-tech University(ZSTU)for financial support.
文摘A series of phenylazo-β-naphthol-containing sulfonamide disperse dyes were prepared from C.I.Acid Orange 7 by successive reactions of chlorination and amination,and their chemical structures were characterized by FTIR,1H NMR,and mass spectrometry.The dyes were applied to coloring of knitted fabrics from fine denier polypropylene fibers by exhaust dyeing and their optimal dyeing conditions,such as dyebath pH,dyeing temperature,dyeing time,and dye concentration were investigated in detail.Then,dye exhaustion,color strength,and color fastnesses of the dyes on the fibers were assessed and summarized.In view of dye exhaustion and color strength of the sulfonamide dyes on fine denier PP fabrics,90℃ was selected as the best dyeing temperature at dye concentration below or equal to 3.0%owf.For achieving higher color strength,130℃ was the better choice when the dye concentration was above 3.0%owf.The sulfonamide dyes,especially secondary sulfonamide dyes,exhibited superior dye exhaustion and color fastnesses to washing,sublimation,and rubbing on fine denier PP fabrics in comparison to C.I.Solvent Yellow 14 bearing the same chromophore but without sulfonamide group.
基金supported by NNSFC (No. 21372063)Program for Changjiang Scholars and Innovative Research Team in University (No. PCS IRT1126)+1 种基金the Foundation of the Education Department of Henan Province for Science and Technology Research Projects (No. 13A150046)the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
文摘Mono- and bis-dialkylaminophenylbuta-l,3-dienyl boron-dipyrromethenes (BODIPYs) 1-12 were synthesized in 36%-42% yields by a Knoevenagel-type condensation. The absorption and emission maxima (λabs = 614-739 rim; ,λem = 655-776 nm in CHCI3) of 1-12 covered from the visible to the near- infrared region. Probe I was ratiometric Vis pH probes. Such probe was almost non-fluorescent. Upon the protonation of the tertiary amine function of 1, the strong fluorescence (φf =0.97) was released and the florescence intensity was dramatically increased by one thousand folds. The sharp isosbestic points were discovered at 590 nm, which was a ratiometric pH probe.
文摘Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicate- clay nano-particles, and have already been used in polymeric coatings to improve mechanical thermal and stability properties. In this paper, the basic blue 41(BB41) was intercalated into Na+- montmorillonite in an aqueous medium. The dye-intercalated montmorillonite was cen- trifuged, dried, and milled to prepare the nanopigrnent particles. X-ray diffraction showed an increase in the basal spacing, thus confirming intercalation of the BB41 molecules within the nanostructures of the interlayer spaces. Fourier transform infrared spectroscopy was used for identifying the functional groups and chemical bounding of Na+-montmorillonite, BB41 and montmor- illonite-BB41. The morphology of NCP was also studied by transmission electron microscopy. Finally, thermo- gravimetric analysis and differential thermograms sug- gested the thermal stability of the intercalated dye was improved.