Synthesis and characterization of photoresponsive POSS-based polymers and their switchable water and oil wettability on cotton fabric
Synthesis and characterization of photoresponsive POSS-based polymers and their switchable water and oil wettability on cotton fabric
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DOI：
10.1039/c5ra19702c
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发表时间：
2015-11
期刊：
影响因子：
3.9
通讯作者：
Jianbao Huang;Yangen Huang;Chuanglong He;Yu Gao
中科院分区：
文献类型：
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作者：
Jianbao Huang;Yangen Huang;Chuanglong He;Yu Gao
采用自由基聚合法制备了含有多面体低聚硅氧烷（POSS）和氟化偶氮苯基团的快速光响应聚合物，并用NMR、FTIR、XRD、GPC、TGA等手段对其进行了表征。通过紫外-可见吸收光谱研究了聚合物的光响应特性。聚合物在溶液中的反顺式光异构化符合一级反应动力学方程。当POSS摩尔比为3.0%时，涂层棉织物具有超疏水性和高疏油性。更重要的是，通过紫外线照射，可以在短时间内智能控制涂层织物表面的水和油的润湿性。
Fast photoresponsive polymers containing polyhedral oligomeric silsesquioxane (POSS) and fluorinated azobenzene groups were successfully prepared via radical polymerization and characterized by NMR, FTIR, XRD, GPC, TGA, etc. The photoresponsive properties of the polymers were investigated through ultraviolet-visible absorption spectra. The trans–cis photoisomerization of the polymers in solution conformed to a first-order reaction kinetics equation. Superhydrophobicity and high oleophobicity of the cotton fabric coated with the polymer was observed when the POSS mole ratio was 3.0%. More importantly, the surface wettability of both water and oil on the coated fabrics could be intelligently controlled by applying UV irradiation in a short time.