Journal of Engineered Fibers and Fabrics
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2019
·
IF 0.474
Liping Liang,Manuel J Lis Arias,Zixuan Lou,Qiaole Mao,Chang Ye,Xu Meng
Preparation of hydrophobic cotton fabric based on the self-assembly method was proposed. The cotton fabric was modified with 3-(methacryloyloxy)propyltrimethoxysilane and grafted with trifluoroethyl methacrylate and dodecafluoroheptyl methacrylate through free radical polymerization reaction. The objective of this research work was to investigate the effect of fluorine monomer with different chemical structure deposited on cotton fabric on the hydrophobic property. The chemical structure, surface topography, and surface wettability of the fabrics were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and water contact angle experiments, respectively. The results showed that the as-prepared fabrics exhibited water contact angle of above 140°. It was noticed that the fluorocarbon chain length of a modifier and its chemical structure could strongly affect the hydrophobic property of the modified fabrics, and the increase in fluorine atoms caused an increase in the water contact angle values.
研究领域:
材料科学
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纺织工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2013
·Vol. 3
·期 15
·5045-5055
·
IF 2.562
Jian-Jian Wang,Yin-Ning Zhou,Ping Wang,Zheng-Hong Luo
A series of fluorene-based rod–coil block copolymers with different lengths of fluorine-containing coil segments (poly[2,7-(9,9-dihexylfluorene)]-block-poly (2,2,3,3,4,4,4-heptafluorobutyl methacrylate), PF-b-PHFBMA) were well designed and successfully synthesized via atom transfer radical polymerization (ATRP). The thermal behavior, optical properties and surface properties of these rod–coil block copolymers were investigated. The thermal properties of the copolymers presented a good thermal stability, while the optical properties did not show a noticeable dependence on the lengths of the coil segments. In addition, they showed a high dependence on the self-assembly behavior in selective solvents. The surface properties were obviously influenced by the structure of the micelles formed in different selective solvents (i.e. THF, CHCl3 and C2F3Cl3). The incorporation of the fluorine-containing coil segments in the polyfluorene-based polymers yielded a low energy surface and various interesting surface morphologies, which gives the polymers many potential applications.
研究领域:
材料科学
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光电材料
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2016
·
IF 3.926
Haiyang Zhang,Junjie Ou,Yinmao Wei,Hongwei Wang,Zhongshan Liu,Hanfa Zou
A hybrid fluorous monolithic column was simply prepared via photo-initiated free radical polymerization of an acrylopropyl polyhedral oligomeric silsesquioxane (acryl-POSS) and a perfluorous monomer (2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoroheptyl acrylate) in UV-transparent fused-silica capillaries within 5 min. The physical characterization of hybrid fluorous monolith, including scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, mercury intrusion porosimetry (MIP) and nitrogen adsorption/desorption measurement was performed. Chromatographic performance was also evaluated by capillary liquid chromatography (cLC). Due to the fluorous–fluorous interaction between fluorous monolith and analytes, fluorobenzenes could well be separated, and the column efficiencies reached 86,600–92,500 plates/m at the velocity of 0.87 mm/s for alkylbenzenes and 51,900–76,000 plates/m at the velocity of 1.10 mm/s for fluorobenzenes. Meanwhile, an approach to integrate nanoelectrospray ionization (ESI) emitter with hybrid fluorous monolithic column was developed for quantitative determination of perfluoroalkyl acids by nanoHPLC–ESI-MS/MS. The integration design could minimize extracolumn volume, thus excluding undesirable peak broadening and improving separation performance.
研究领域:
分析化学
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环境科学
·
质谱分析
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
·
2021
·Vol. 110
·期 5
·1082-1092
·
IF 3.368
Meiling Li,Cheng Zheng,Shumang Zhang,Binggang Wu,Kailei Ding,Xueyu Huang,Yang Lei,Yunbing Wang
Thrombosis is an important factor that causes the failure of artificial biological valves in addition to calcification and immune rejection. A hydrophobic antifouling surface can improve blood compatibility by reducing the absorption of protein. In this study, porcine pericardium was cross-linked with glycidyl methacrylate, and carbon–carbon double bonds were introduced. Then, fluoride monomer was added so that the pericardial surface would become hydrophobic and antifouling. Fluoride modification changed the hydrophilicity of the pericardium surface, and the surface water contact angle increased from 84° to 143°. Compared with unmodified pericardium, the adsorption of bovine serum albumin and fibrinogen decreased by 93.1% and 85%, respectively, and the anti-thrombogenicity was greatly enhanced.
研究领域:
生物医学工程
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心血管医学
·
材料科学
✓ 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）