INDUSTRIAL CROPS AND PRODUCTS
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2016
·
IF 3.449
Longyun Hao,Rui Wang,Kuanjun Fang,Yuqing Cai
The cotton samples were treated by chitosan solution at acidic condition to modify their dyeing properties to anionic coloring materials. By fluorescence spectrum together with FTIR, XRD and TGA analysis, it was concluded that the chitosan molecules could spontaneous transfer from solution onto cotton surface yet would not influence its internal structure. In order to color the chitosan-treated cotton, an anionic polystyrene-encapsulated copper phthalocyanine (CuPc) pigment was prepared in a miniemulsion process. The full encapsulation of nano-pigment could be directly observed by TEM . The encapsulation would not alter the crystal structure and color properties of CuPc while could make the nano-pigment more stable against centrifuge and temperature variation. Finally, the dyeing properties of this encapsulated nano-pigment on chitosan-treated cotton samples were studied. It was indicated the chitosan molecules on cotton had great capability to improve the uptake of encapsulated nano-pigment mainly due to the accessible amino groups introduced.
研究领域:
材料科学
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纺织工程
·
化学工程
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产品关联
DOI
高影响因子
CELLULOSE
·
2019
·Vol. 26
·期 9
·5807-5819
·
IF 3.917
Fang Kuanjun,Xie Ruyi,Liu Xiuming,Zhao Gaojie,Han Dongmei,Chen Weichao,Shi Zhen,Hao Longyun,Cai Yuqing
Abstract The low utilization of dyestuff in textile coloration leads to serious environmental pollution and wasting of resources. Dye/polymer nanospheres have high absorbing, reflecting and scattering light properties due to the large specific surface area, the regular shape, and the uniform size. In the present study, we report the reactive dye/poly(styrene-butyl acrylate-trimethyl ammonium chloride) composite nanosphere as a highly efficient colorant for cationic cotton fabrics. The dye contents of the four colored nanospheres can reach to 217–404 mg/g. The hydration diameters of the composite nanospheres are 83–101 nm for four different reactive dyes. They have the negative zeta potentials, approximately − 25.3 to − 37.6 mV. The reactive dye/copolymer nanospheres exhibit much more powerful coloration ability for cotton fabrics and higher dye utilization than the ordinary reactive dyes. The color depths of cotton fabrics dyed with colored nanospheres are 2.8, 4.9, 10.6 and 4.2 times of the values of the corresponding dye colored samples. The dye/copolymer nanospheres have much larger color gamut than the ordinary dyes. The color durability and levelness of the dye/copolymer nanospheres on cotton fibers are good enough for practical applications. What’s more important is that the residual dye/copolymer nanospheres in the dye bath can be reused in the next dyeing process. This novel nanosphere dyeing method does not only save the colorants but also avoid the discharging of colored sewage. Graphical abstract The reactive dye/poly(St-BA-VBT) nanospheres were successfully fabricated by adding the cationic poly(St-BA-VBT) nanospheres dispersions into reactive dye solutions. This article offered a novel dyeing method for cotton fabrics using dye/poly(St-BA-VBT) nanospheres. These colored nanospheres can endow the cotton fabrics with good color performance and avoid the discharging of colored waste water, which provide a green way for textile coloration.
研究领域:
材料科学
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纺织工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Lei Wang,Beibei Xie,Hanchang Hu,Gaoxiang Bai,Zhenpei He,Yi Huang,Lijun Liu,Chen Meng
Limited research exists on how the structure of quaternary ammonium salt (QAS) affects the electrostatic attraction and hydroxyl reactivity of cationic cotton, which strongly affects reactive dye adsorption, diffusion, and fixation. Thus, in our work, the effects of QAS structure on the electrostatic attraction, hydroxyl reactivity, and dyeing properties were investigated. The intensity at 402.5 eV (-N + (CH 3 ) 3 ) in the XPS rose from 34 % to 70 % as the QAS alkyl chain length increased from 4 to 18 carbon atoms, signifying an enhancement of the positive charge and electrostatic attraction between reactive dye and QAS modified cotton. However, molecular dynamic (MD) simulations of the QAS-modified cotton with octadecyl chains revealed that the reactive dye demonstrated slower molecular mobility compared to the untreated cotton. This is not conducive to the diffusion and fixation of reactive dyes. The QAS-modified cotton with hexyl chains not only alters the activity of hydroxyl at the 6th but also generates additional hydroxyl at the β-position that contributes to enhancing the improvement of fixation through Gaussian simulations. Therefore, cationic cotton treated with 60 g/L of (3-chloro-2-hydroxypropyl)-dimethyl-octadecylazanium chloride (CT-8) exhibits superior dye uptake levels (91.84 %), K/S values (13.10), and dye fixation percent (88.38 %).
研究领域:
材料科学
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纺织工程
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产品关联
DOI
PubMed
高影响因子
COLORATION TECHNOLOGY
·
2016
·Vol. 133
·期 1
·65-72
·
IF 1.127
Ting Zhang,Rubing Bai,Qiang Wang,Xuerong Fan,Ping Wang,Jiugang Yuan,Yuanyuan Yu
Enzymatic coloration of fabrics has received worldwide attention in recent years. In order to improve the dyeing properties of enzymatically coloured fabrics, a novel strategy using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC), a biological coupling agent, to pretreat wool fabric was employed in this paper. Enzymatic coloration of wool fabrics with syringic acid was carried out in the presence of laccase from Trametes versicolor . The effect of different periods on laccase-catalysed polymerisation of syringic acid was examined by UV-vis spectroscopy. Enzymatic coloration results of dyed wool fabrics were evaluated by means of K / S value and colour difference ( ∆E* ). Process parameters, including the dosages of syringic acid and incubation time, that influenced the colour depth were studied. Meanwhile, the colour fastness and levelness of dyed wool fabrics were tested. The results showed that the UV-vis absorbance of reaction solution increased as oxidation time elapsed, and a new peak appeared at 360 nm. After pretreatment, the K / S values and colour difference values of wool fabrics dyed with poly(syringic acid) improved appreciably compared with the control samples without any pretreatment. Moreover, pretreated wool fabrics showed better dyeing fastness and levelness than control samples.
研究领域:
生物化学
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纺织科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shihao Fan,Yi Liu,Wanglong Jia,Liuchun Zheng
Meta-aramid (PMIA) is a high-performance polymer known for its exceptional properties, however, its molecular chain arrangement and strong hydrogen bonding contribute to its rigidity and brittleness. Additionally, the lack of reactive groups in its molecular structure severely affects the dyeing properties of PMIA, and restrains its applications in various fields. To address these issues, this study introduced 4,4′-thiodianiline (4,4′-TDA) into the main chain of PMIA molecules through copolymerization modification. This approach enhanced the relative molecular weight of the copolymers, resulting in co-PMIAs with improved flexibility. The synthesized copolymers demonstrated excellent mechanical properties and thermal stability, maintaining high strength while improving toughness. Furthermore, the incorporation of this thioether-containing monomer also enhanced the dyeing properties and flame retardancy of PMIA. The modification strategy employed in this research offers valuable insights into the structural modification of aromatic polyamides, and the synthesized novel copolymers show promising applications in the field of protective clothing.
研究领域:
材料科学
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高分子化学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Yixuan Wang,Yuanhang Xiao,Keshuai Ren,Chunhua Wang,Huiyong Sun,Wei Lin
Chrome-free tanning is an emerging trend for the green sustainable development of the leather manufacturing industry. However, conventional anionic wet finishing materials for chrome-tanned leather are not suitable for chrome-free tanning systems due to the imbalance of surface charge between the wet finishing materials and chrome-free tanned leather. In this paper, we have developed a novel and facile approach to synthesizing an amphoteric polymer named PAMLD as a retanning/fatliquoring agent for chrome-free tanned leather. The PAMLD polymer with a suitable particle size (d = 325 nm) and appropriate isoelectric point (pI = 4.6) was prepared by one-step copolymerization in an aqueous solution using acrylic acid (AA), methacrylic acid (MAA), ethyl methacrylate trimethylammonium chloride (DMC), and dodecyl 2-methyl acrylate (LMA) as monomers. The obtained amphoteric polymer was further applied in the wet finishing processing of three types of chrome-free tanned leather. Comprehensive characterizations of leathers treated with PAMLD indicated the retanning and fatliquoring effect of PAMLD on collagen fibers. Moreover, leathers treated with PAMLD exhibited better dyeing properties compared with those treated with the commercial amphoteric wet finishing material (FRA), as evidenced by their superior K/S values and color fastness to rubbing and washing. This research not only provides a feasible approach for preparing multifunctional amphoteric polymers but also offers novel matching wet finishing materials and strategies for variable chrome-free tanned leather production.
研究领域:
制革化学
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环境科学
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高分子化学
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产品关联
DOI
高影响因子
AATCC Journal of Research
·
2022
·
IF 0.726
Jingming Huang,Hongjuan Zhang,Liujun Pei,Jiping Wang
In this paper, two disperse dyes with different substituents were selected to dye polyester fabrics in decmethylcyclopentasiloxane (D5) medium. The structures and dyeing performance of the two dyes were studied and compared. The results showed that dyes with lower solubility in D5 medium had higher dyeing rates. DFT calculations showed that large steric hindrance of cyano groups on diazo components contributed to improving the dyeing rate. This was due to the generation of more monomolecular dyes by destroying π-π stacking interactions. These results provide theoretical guidance for improving the exhaustion and further promote the industrial development of disperse dye in a D5 dyeing system.
研究领域:
化学
·
材料科学
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2018
·
IF 2.975
Xian-hai Hu,Xiang Liu,Man-li Liu,Gen Li
A red fluorescent sulfonated waterborne polyurethane-based dye WPU-DR11 was synthesized by conjugating Disperse Red 11 (DR11) into polyurethane backbones. The expected structure of WPU-DR11 was characterized by FT-IR and UV–vis spectra. Containing the well-known dye of anthraquinone chromophores , WPU-DR11 exhibits intriguing optical behaviors. Compared with DR11, WPU-DR11 shows an obvious bathochromic shift in absorption spectra , whereas a evident hypsochromic shift in emission spectra. The fluorescence intensity of WPU-DR11 is dramatically enhanced compared with that of DR11. The fluorescence intensity of WPU-DR11 increases with the temperature, which is different from that of ordinary fluorescent materials. It is found that the fluorescence intensity of WPU-DR11 gradually increase with the increase of concentration, and then decrease. Migration rate of WPU-DR11 are only 2.0–4.0%, which is well below migration rate of DR11. The polyester fibers dyed with WPU-DR11 show high color yield, excellent breaking strength retention, good air permeability and anti-wrinkle resistance. According to the experimental results, WPU-DR11 exhibits excellent fluorescent and dyeing performance.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
FIBERS AND POLYMERS
·
2021
·Vol. 22
·期 5
·1285-1295
·
IF 2.153
Ren Jingyi,Lian Dandan,Lu Jianjun
The hygroscopic and dyeable polyphenylene sulfide (PPS) composite fiber was prepared using a twin-screw extruder and a melt spinning machine. A new dyeing process was proposed and the moisture absorption and dyeing mechanism of the composite fiber was analyzed. The results show that sodium polyacrylate (PAAS) is uniformly dispersed in the PPS matrix and is compatible with PPS at the macromolecular level. The thermal properties of the composite fibers are basically unchanged, and the crystallinity is slightly reduced. With the increase of PAAS content, the normal moisture regain of the composite fiber reached 2.11 % from 0.21 %, and the contact angle decreased from 73.8 ° to 52.3 °. Under the new dyeing technology, the dyeing rate of the composite fiber reached 93 %, and the washing fastness was grade 5. The mechanism of hygroscopicity and dyeing of macromolecular space networks and polyelectrolyte was proposed.
研究领域:
材料科学
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纺织工程
·
高分子化学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2024
·
IF 4.1
Lei Qian,Xiyu Song,Shuaijun Fang,Yu Wang,Hongfei Qian
We previously synthesized a group of carbamate-linked disazo disperse dyes that showed excellent fastness properties on polyester fabric by using the thermosol dyeing process. However, the color yield of the dyed fabric was not sufficiently high to be accepted by users, especially when using a high-temperature dyeing process. To further optimize the structures of disazo disperse dyes and observe the effect of the linking groups on the dyeing properties, in this work, we used p -phenylene diisocyanate or terephthaloyl chloride as crosslinking agents and aniline derivatives containing hydroxyl or amino groups as reactants to synthesize four disazo disperse dyes containing various characteristic groups, including ester, carbamate , amide , and urea groups. The structures of these new dyes were characterized by nuclear magnetic resonance, mass spectrometry , and Fourier-transform infrared spectroscopy analyses . The spectral properties in an N,N-dimethylformamide solvent were measured, the structural parameters of the dyes were calculated using the density functional theory method, and the dyeing properties were investigated by using high-temperature and thermosol dyeing processes, and also compared with these for the commercial dye, C·I.Disperse Red 153. The results showed that there were slight differences in the molar extinction coefficients and maximum absorbance wavelengths between the new dyes, but the effects of characteristic groups on the structural features and the dyeing properties of the new dyes were significant. The ester-linked dye (D1) had the highest color depth when a high-temperature process was used in the presence of 50 mL/L of methyl salicylate because of its highest ClogP (N-octanol/water partition coefficient) value, corresponding to its more hydrophobic nature, while all the other dyes produced lower color yields. When used in the thermosol dyeing process, the carbamate-linked dye (D2) yielded the highest color depth, followed by the ester-linked dye (D1) and amide-linked dye (D3), and the urea-linked dye (D4) produced the lowest color depth due to its highest hydrophilic properties. Finally, it was demonstrated that the new dyes had excellent color fastnesses except for the urea-linked dye (D4), which exhibited a slightly lower light fastness, While the commercial dye used as the control showed a relatively poor sublimation and light fastness although its color depth and chroma value performed slightly better than the new dyes as used by the thermosol dyeing process.
研究领域:
化学工程
·
材料科学
·
纺织科学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Yawei Song,Kuanjun Fang,Mohd Nadeem Bukhari,Kun Zhang,Zhiyuan Tang,Rongqing Wang
Dye/polymer nanosphere is a novel kind of colorant that can significantly enhance the dye utilization efficiency on textile. In order to improve the coloration ability of colored nanospheres, disperse dye/P(St-MAA) nanospheres with rough surface were successfully prepared through alkali pretreatment at pH 12 and coloration of disperse dyes. TEM image and particle size analysis indicate that the colored nanospheres had rough surfaces with the average particle size of 158.1 nm. The dye content of colored rough nanospheres was 63.7 mg/g, higher than the un-alkali-treated ones. The reason for the change of morphology, particle size and dye content was due to the swelling of nanospheres at alkali condition. The XRD , TGA and DSC diagrams show that the disperse dye molecules formed strong interaction with the macromolecular chains and aggregated to form crystals in the rough nanospheres. The printed cotton fabric shows higher color performance using the colored rough nanospheres because of the lower visible light reflectance. The printed fabric also exhibits satisfactory color fastness for practical application.
研究领域:
材料科学
·
纺织工程
·
染料化学
✓ 已验证
DOI
高影响因子
AATCC Journal of Research
·
2022
·
IF 0.726
Jiliang Cao,Chunli Meng,Hong Zhao
The natural cationic colorant berberine was used to dye cationic dyeable polyester (CDP) fibers. Its dyeing properties, namely color strength (K/S) of dyed CDP and percent exhaustion (E%) of berberine, on CDP were explored at various dyeing pH levels, temperatures, time, and concentration of berberine. Furthermore, dyeing kinetic and thermodynamic studies were also carried out to evaluate the adsorption properties and mechanism. It was found that the E% of berberine on CDP fibers and the rate of adsorption increased with increasing dyeing temperature, while the influence of pH was extraordinarily small. In addition, the adsorption isotherm of berberine on CDP fibers was in line with the Langmuir model.
研究领域:
材料科学
·
染料化学
·
纺织工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）