JOURNAL OF POLYMER SCIENCE
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2022
·Vol. 61
·期 11
·1015-1025
·
IF 3.046
Xiaoju Zhu,Neng Hu,Zheng Xu,Xin Cai,Peter Müller-Buschbaum,Qi Zhong
An easy care of silk fabrics is realized by crosslinking a thermo-responsive copolymer film onto its surface. The thermo-responsive copolymer poly( N -isopropylacrylamide- co -oligo[ethylene glycol] methyl ether methacrylate- co -ethylene glycol methacrylate), abbreviated as P(NM- co -OA 300 - co -EA 360 ), is synthesized by sequential atom transfer radical polymerization. By applying 1,2,3,4-butanetetracarboxylic acid as crosslinker, the thermo-responsive P(NM- co -OA 300 - co -EA 360 ) film can be immobilized onto the silk fabrics. The transition temperature (TT) of the P(NM- co -OA 300 - co -EA 360 ) film crosslinked on silk fabrics is around 46 °C. The reversible transition behavior can effectively reduce the attachment between lipophilic stains and P(NM- co -OA 300 - co -EA 360 ) film, inducing a high efficiency of stain removal. Simply rinsing with deionized water at 25 °C (below its TT) for 30 s, 60% of stains can be removed. Moreover, the crosslinked P(NM- co -OA 300 - co -EA 360 ) film turns hydrophobic during outdoor activities or drying. Thus, the repelled water molecules can be easily evaporated from the silk fabrics and the drying process is 25% faster than that without crosslinked P(NM- co -OA 300 - co -EA 360 ) film. Based on the excellent performance of stain removal and quick drying, the silk fabrics crosslinked with thermo-responsive copolymer film can be broadly used to design silk-based costumes for daily use. Graphical
研究领域:
材料科学
·
纺织工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Miao Jiang,Chao Xiao,Xusheng He,Huichao Du,Yanyan Wang,Xin Ding,Xian Zhang,Xiaofei Li,Kang Zheng,Xianglan Liu,Lin Chen,Xingyou Tian
Functional textiles with efficient sweat releasing and thermal insulating play a pivotal role in maintaining physiological comfort in cold winter. However, the breathability and warmth have conflicting structural demands on the conventional fabric. Here, a porous polyimide film (PIF) with tunable sweat release capability was prepared by growing a graphene layer through laser-ablation strategy. Jungle-like graphene layer offers the porous PI film with distinct advantages, including a desired super hydrophobic performance (water contact angle =153°), rapid air permeability (1572 g/m 2 ·24 h), quick drying function based on high photo-thermal and electro-thermal conversion efficiency, and outstanding thermal insulating capability (0.033 W/m·K). Moreover, the graphene layer can also be custom printed into various patterns, which expanded the application scenarios for wearable flexible electronics. Overall, this Janus design offered insight into the proactive control of sweat release and heat transfer within the hierarchical and interconnected network, providing promising benefits to the development of multifunctional drying and warming textiles.
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
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 20
·17091-17095
·
IF 3.201
Youyou Pang,Rujian Zhao,Yao Lu,Jiyang Liu,Xiaoping Dong,Fengna Xi
Simple anti-counterfeiting printing using biocompatible, non-toxic and highly efficient luminescent materials plays crucial roles in economic and social fields as well as in our daily lives. In this work, new nitrogen doped graphene quantum dots (N-GQDs) are synthesized and applied in the preparation of quick-dry fluorescent ink for both writing and printing. The N-GQDs are synthesized based on a one-step bottom-up molecular fusion between 1,3,6-trinitropyrene and triethylamine by a solvothermal process with a high yield of 84.6%. Triethylamine simultaneously acts as a reaction medium and a nitrogen-doping agent for the formation of fluorescent N-GQDs. The as-prepared N-GQDs exhibit a single-layer graphene structure, high crystallinity, uniform size and excitation-independent fluorescence emission with a narrow half-peak width (66 nm). Successful doping of N atom in GQDs enables bright blue fluorescence with a high absolute photoluminescence quantum yield (17.8%). Owing to their excellent photostability and good solubility in ethanol, N-GQDs are applied to easily prepare quick-dry fluorescent ink for both writing and printing by simply blending GQDs with glycerol in an ethanol medium. Moreover, synthesis of a fluorescent powder and hydrogel is also achieved.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 53
·期 24
·16383-16392
·
IF 2.993
Wu Yadong,Wang Fang,Li Xianglong,He Jinmei,Huang Yudong
The synergic effect between each component in composite membrane has created a new concept to fabricate membrane materials and widen their applications. Previous trials have suggested that micrometer-scale aramid fiber (MAF) could be effectively split into nanoscale aramid fiber (NAF) by dissolution in DMSO/KOH. Addressed herein is a time-saving approach to incorporate graphene oxide (GO) together with NAF to fabricate composite membranes through π–π stacking interactions. NAF–GO composite membranes (GO/NAF) containing gradient contents of GO have been prepared using absolute ethanol as proton donor, making the drying process facile and fast. The obtained composite membranes exhibit excellent hydrophilicity and enhanced mechanical performance. The chemical structure, morphology, crystallization and mechanical strength of GO/NAF composite membranes are characterized, respectively, and the hydrophilicity of GO/NAF is also evaluated by static water contact angle measurements. In the case of medium GO content (1 wt%) used in this study, the composite membrane possesses both optimal mechanical performance and better hydrophilicity compared to other supplementations, indicating that absolute ethanol is a promising proton donor for flocculation, which makes the post-treatment process more economic.
研究领域:
材料科学
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高分子化学
·
纳米技术
·
膜科学
·
表面科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Danlong Yang,Yingzhe Liu,Yuling Shi,Qianqian Pan,Yangeng Lan,Jianhong Xu,Tao Wang
Silica aerogel microspheres are known for their unique features which are better than those of the bulk silica aerogel, including excellent biocompatibility and flowability, and have a broader application prospect for biomedicine, adsorption purification, catalytic reactions, energy storage, and sensing. However, the production of high-quality silica aerogel microspheres still poses significant challenges, such as low sphericity, difficult size adjustment, uneven morphology, and a prolonged drying process, especially ambient pressure drying for several hours. Herein, we report a novel process for efficiently synthesizing high-quality silica aerogel microspheres through the use of microfluidic and ambient pressure drying techniques. In the novel process, the colloidal sol microdroplets were prepared in stepped T-microchannels to achieve size adjustment with a narrow diameter distribution and good sphericity. A new drying process under ambient pressure at high temperature was proposed, which realized the rapid drying under ambient pressure for 10 min while the linear shrinkage of the microspheres was less than 5%. Highly spherical and uniform silica aerogel microspheres with diameters adjustable from 50–300 μm were successfully fabricated. The prepared silica aerogel microspheres exhibited high mesoporosity along with ultralow density, high specific surface area, and high hydrophobicity. In addition, the factors that significantly influence the final morphology of the silica aerogel microspheres have been thoroughly researched. This innovative process offers a new approach for the efficient synthesis of high-quality silica aerogel microspheres.
研究领域:
材料科学
·
化学工程
·
纳米技术
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）