Journal of Bionic Engineering
·
2022
·Vol. 20
·期 3
·900-909
·
IF 2.995
Zhong Xin,Guo Zhiguang
Oil–water mixing has brought many problems to a society, and it is of great significance to develop a simple, convenient, efficient, and durable separation material to solve the problem of oil–water mixing. In this paper, modified cottons were successfully prepared using polydopamine as the in situ mineralization site of TiO 2 nanoparticles combined with synergistic crosslinking with KH550. A large number of hydrophilic groups endowed the cotton with superhydrophilic ability, which greatly shortened its water spreading time. The prepared modified cotton could be successfully separated from oil and water, and still had a separation efficiency of 99.999% after 50 cycles. In addition, after 24 h immersion in 1 M HCl, NaOH, and NaCl solutions and 50 abrasion experiments, the modified cotton showed excellent oil–water separation ability, and the separation efficiency was above 99.990%. Successfully provided a simple preparation method to prepare high-efficiency and clean cottons for oil–water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
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
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2019
·
IF 3.206
Ya Dan Li,Hui Hui Chai,Shu Jie Zhang,Zhi Song Lu,Chang Ming Li,Ling Yu
A sensitive and portable on-thread pre-concentration and colorimetric detection method of copper ions was proposed. Commercial cotton thread was proposed as a solid sorbent for effectively extracting copper ions (Cu 2+ ) from solution. The adsorbed Cu 2+ was converted to Cu + by ascorbic acid . The Cu + on the threads was visualized by horseradish-peroxidase-catalyzed color changes of a chromogenic oxidized tetramethylbenzidine substrate. The adsorption of Cu 2+ on the plasma- and Na 2 CO 3 -treated thread was verified by scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and zeta potential characterization. The Cu + -induced dysfunction of HRP on the thread was verified by X-ray photoelectron spectroscopy. With optimized reaction conditions, the concentration-dependent colorimetric response plot was characterized, where the linear detection range was 2–400 nM and the detection limit was about 0.15 nM. Measurements of a group of possible interfering ions and spiked real-water samples demonstrated the good selectivity of the proposed method. The proposed on-thread pre-concentration and colorimetric detection offers a low-cost and effective alternative for detecting of copper ions in real applications.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2020
·
IF 3.862
Yejun Luo,Suqin Deng,Zheng Li,Lijiu Cao,Yuan He,Yufang Chen,Tao Jin
Hydrophobic modified cotton filter fabric is a key material in the chemical industry, as it is used in common industrial filtration and precision separation processes. Most studies have focused on improving the hydrophobicity of cotton filter fabric. However, the hydrophobic durability, which is the most critical factor that determines the application scope of the material, remains unaddressed. Herein, we report that CS 2 activation and subsequent 1-octadecene graft copolymerization via ARGET-ATRP of the cotton filter fabric leads to a modified material that is largely superior to the traditional cotton filter fabric. The modified cotton filter fabric exhibits high hydrophobicity, with an initial water contact angle of 141.0° and excellent hydrophobic durability, as demonstrated by the residual water contact angle of 126.7° after a 150 min droplet holding time. Moreover, the modified hydrophobic sample fabric was resistant to a variety of physical stresses and chemicals, maintaining its hydrophobic properties following multiple resistance tests, such as immersion in oily water for 10 days, immersion in organic solvents for 72 h, or when subjected to UV radiation for 24 h.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Zhihao Zhang,Zhongying Ma,Qian Leng,Yuhua Wang
With the increasing awareness of environmental protection, the greening of flame retardants has become an inevitable choice for flame retardant technology. Bio-based materials have the advantages of wide source, recyclability and green environmental protection, and have received extensive attention. In this work, chitosan and phytic acid as intumescent flame retardant system and metal ion as a synergist were built on cotton fabrics to achieve efficient flame retardancy by facile dip-pad-dry process. Microscale combustion calorimetry results manifested that the heat release rate values of coated samples were lower than that of uncoated samples. The peak heat release rate and total heat release of uncoated samples were 333.1 W/g and 13.1 kJ/g, while these values of samples coated CH/PA/Ba/PA were 129.1 W/g and 5.4 kJ/g respectively and char residues also were increased sharply owing to the phosphate groups promote the formation of char layer covering the surface of the cotton fabrics, which can prevent heat transfer. Scanning electron microscopy confirmed that there were much more bubbles on the surface of fibers for the coated CH/PA/Ba/PA after horizontal flame tests. The results indicated that the synergy of the intumescent flame retardant system was achieved by the addition of metal ions which could accelerate the produce of a large number of nonflammable gases. Horizontal flame test and limit oxygen index (LOI) test showed that the burning rate and LOI values of samples coated CH/PA/Ba/PA, CH/PA /CH/PA, PA/Ba/PA/Ba were 1.5 mm/s and 22.0, 2.0 mm/s and 20.2 and 2.5 mm/s and 18.0 respectively, compared to 3.3 mm/s and 16.2 of uncoated samples. The samples with intumescent flame retardant system and metal ions (CH/PA/Ba/PA) had best flame retardant performance. Moreover its weight gain (5.2%) was less than that (10.7%) of the sample only with intumescent flame retardant system (CH/PA /CH/PA). The less weight gain had less effect on the softness of cotton fabrics. As a result, the coating is expected to be applied in practice.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2019
·
IF 4.191
Caiyan Wan,Peixiu Tian,Mingsheng Liu,Guangxian Zhang,Fengxiu Zhang
Cotton is the seed fiber of the Gossypium plant (from the Malvaceae family), which is one of the most important crops worldwide and is suitable for the application in clothes, furniture, and industrial fabrics areas. Combustible cotton easily triggers fire hazard. Thus, a phosphorous˗nitrogen flame retardant, ammonium salt of tris˗(hydroxymethyl)˗aminomethane˗penta(methylphosphonic acid) (ATPMPA) was synthesized to produce fire˗retardant cotton. The ATPMPA structure was characterized by nuclear magnetic resonance ( 1 H NMR, 13 C NMR, and 31 P NMR) spectroscopy. ATPMPA flame˗retardant cotton was prepared by phosphate esterification between ATPMPA and the ˗OH groups of cotton cellulose. Scanning electron microscopy verified that the surface of the treated cotton fiber was not obviously changed. The flame retardantcy of cotton was tested using the LOI, vertical burning and cone calorimetry. The results revealed that the LOIs of the control cotton and treated cotton fabrics increased from 18.4% to 40.8%, 42.4%, and 43.6% after treated with 20 wt%, 30 wt% and 40 wt% flame retardant, respectively. After 50 laundering cycles (LCs), the LOIs of the treated cotton fabrics only decreased to 26.7%, 30.8%, and 32.3%, respectively, indicating that treated cottons obtained the superior flame retardancy and excellent washing resistance. Thermogravimetry (TG) analysis showed that the charring ability of the treated cotton was markedly improved. TG-IR result of treated cotton indicated that the decomposition temperature and the amount of volatile matter produced by the flame-retardant cotton were lower than that of control cotton. The whiteness of treated cotton sustains well.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Hao Yang,Qingxia Zhang,Ying Chen,Yong Huang,Fang Yang,Zhong Lu
ZnO coated fabrics have attracted wide attentions due to their antibacterial and photocatalytic self-cleaning properties. However, the photo-response of ZnO only in ultraviolet region limits its application. In this paper, ZnO/BiOBr functionalized cotton fabrics were synthesized by a facile and time-saving ultrasonic-microwave combined method. Compared with ZnO coated fabric, the photocatalytic activity of ZnO/BiOBr coated fabric under visible light irradiation was remarkably improved at no sacrifice of its antibacterial activity. Simultaneously, it also showed good resistance to bacterial adhesion and photocorrosion. The introduction of two-dimensional BiOBr nanoflakes not only enhanced the visible light absorption, but also reduced the recombination rate of electron-hole pairs, thus significantly improving the photocatalytic self-cleaning performance of the coated fabric under visible light irradiation. The ZnO/BiOBr coated cotton fabric with both antibacterial and self-cleaning functionalities may have broad application prospects in the fields of textile, medicine and chemical industry.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2016
·Vol. 17
·期 4
·493
·
IF 3.257
Yongqiang Li,Jianwei Liu,Mei Lu,Zhiqing Ma,Chongling Cai,Yonghong Wang,Xing Zhang
Carboxylesterasesare an important class of detoxification enzymes involved in insecticide resistance in insects. A subgroup ofHelicoverpa armigeraesterases, known as Clade 001, was implicated in organophosphate and pyrethroid insecticide resistance due to their overabundance in resistant strains. In this work, a novel carboxylesterasegene001DofH. armigerafrom China was cloned, which has an open reading frame of 1665 nucleotides encoding 554 amino acid residues. We used a series of fusion proteins to successfully express carboxylesterase 001D inEscherichia coli. Three different fusion proteins were generated and tested. The enzyme kinetic assay towards 1-naphthyl acetate showed all three purified fusion proteins are active with aKcat between 0.35 and 2.29 s−1, and aKm between 7.61 and 19.72 μM. The HPLC assay showed all three purified fusion proteins had low but measurable hydrolase activity towardsβ-cypermethrin and fenvalerate insecticides (specific activities ranging from 0.13 to 0.67 μM·min−1·(μM−1·protein)). The enzyme was stable up to 40 °C and at pH 6.0–11.0. The results imply that carboxylesterase 001D is involved in detoxification, and this moderate insecticide hydrolysis may suggest that overexpression of the gene to enhance insecticide sequestration is necessary to allow carboxylesterases to confer resistance to these insecticides inH. armigera.Keywords:Helicoverpaarmigera;carboxylesterase;pyrethroid;heterologous expression
研究领域:
昆虫学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2014
·
IF 3.766
Bingyan Jiang,Lei Zhang,Bing Liao,Hao Pang
A facile and effective strategy for fabricating a tunable wettability surface on cotton fabrics by dip-coating into self-assembled fluoro-copolymer micelle of poly(hexafluorobutyl methacrylate)- b -poly(oligo(ethylene glycol) methyl ether methacrylate) is developed. The micelle solution, exhibiting thermal-responsive property with uniform spheres at 20 °C and irregular particles at above 50 °C, shows switchable wetting behaviors at different dipping and drying temperatures due to the changeable chemical structure of responsive polymer on fibers. The cotton fabric processed in cold micelle is smooth caused by the self-assembled structure of thermal-responsive micelle with fluorinated parts on the outmost fiber-layer, and it also has high fluorine content and good hydrophobic property. While the one treated in hot micelle is rough, and has good hydrophilic property due to the outmost layer of hydrophilic PEG segments on fibers. This work provides a simple strategy to construct controllable wettability surface and makes a great application potential in household commodity, industrial products and other smart complex materials.
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
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
·
纺织工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2018
·Vol. 25
·期 8
·4831-4840
·
IF 3.809
Li Ya Dan,Li Wan Yun,Chai Hui Hui,Fang Can,Kang Yue Jun,Li Chang Ming,Yu Ling
Cotton thread has been proposed as a new, economically affordable material for the fabrication of microfluidic circuits for use in fast, low-cost, point-of-care diagnostic testing devices. In this work, chitosan, a biocompatible polymer, was used to modify cotton thread to improve its fluidic properties for microfluidic applications. Electrostatic-interaction-mediated adsorption of chitosan on alkaline-scoured thread can effectively increase thread’s solution hydrophilicity and wicking rate. Moreover, the proposed process conserves the thread’s hydrophilicity and fluidic properties even when stored for several months. As a microfluidic platform for enzymatic-reaction-associated colorimetric measurement, the suggested chitosan modification results in the accumulation of more analyte in the detection zone because of the improved flow rate, which enhances the colorimetric signal intensity. In this study, a glucose oxidase-mediated colorimetric glucose assay was demonstrated on a chitosan-modified microfluidic thread-based analytical device (μTAD). A linear range of 1–7.5 mM, a low detection limit of 0.2 mM, and a recovery rate between 93 and 98% was achieved in detecting glucose in artificial urine samples.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2015
·
IF 4.074
Yuanyuan Yu,Qiang Wang,Jiugang Yuan,Xuerong Fan,Ping Wang,Li Cui
Hydrophobic cotton fabrics were prepared by grafting octadecylamine (ODA) onto cotton fiber surfaces via the laccase/2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) treatment. The cotton fibers were oxidized by laccase/TEMPO to introduce aldehyde groups, which reacted with the amino groups of ODA to form Schiff base. First, ODA was coupled to glucan, used as a model compound of cellulose. The results of FT-IR and MALDI-TOF mass spectroscopy prove the formation of a Schiff base between ODA and glucan. Moreover, the existence of ODA in the grafted cotton fibers was verified by ATR-FTIR, elemental analysis, X-ray photoelectron spectroscopy. Finally, the hydrophobicity of the ODA-grafted cotton fabrics was estimated. The surface hydrophobicity of the cotton fabrics increased after the enzymatic grafting reaction.
研究领域:
材料科学
·
纺织工程
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）