辐射接枝法制备动态超疏水棉织物及其性能研究

发布时间：2018-01-16 14:38

本文关键词：辐射接枝法制备动态超疏水棉织物及其性能研究　出处：《高分子学报》2017年02期 　论文类型：期刊论文

【摘要】：以棉织物为基材,利用γ-射线辐射引发甲基丙烯酸十二烷基酯(LMA)接枝聚合,使聚苯乙烯(PS)纳米微球通过接枝链以共价键固定到棉织物上,从而在棉织物表面构筑低表面能的纳米尺度粗糙结构,获得低滚动角的动态超疏水棉织物.傅里叶变换红外光谱(FTIR)分析证明通过辐射接枝,在棉织物上存在PLMA接枝链和PS纳米微球.扫描电子显微镜(SEM)表征证明了PS纳米微球的固定使得棉织物表面呈现纳米尺度的粗糙结构.接触角测试结果证明所获棉织物具有超疏水性能,且相对于仅接枝LMA的改性棉织物,PS纳米微球的固定可以显著降低水滴的滚动角,实现动态超疏水的效果.通过抗弯刚度的测量表征了改性前后棉织物的柔软度,结果表明辐射接枝方法对棉织物的柔软度改变不大,不影响穿着性能.
[Abstract]:The graft polymerization of 12 alkyl methacrylate (LMA) was initiated by 纬 -ray radiation on cotton fabric. The polystyrene (PS) nanoparticles were covalently bonded onto cotton fabric by grafting chain. Therefore, the low surface energy nano-scale rough structure was constructed on the surface of cotton fabric, and the dynamic super-hydrophobic cotton fabric with low rolling angle was obtained. Fourier transform Infrared Spectroscopy (FTIR) analysis proved that it was grafted by radiation. PLMA grafting chain and PS nanospheres on cotton fabrics. Scanning electron microscopy (SEM). It was proved that the surface of cotton fabric was rough on nanometer scale due to the immobilization of PS nanospheres, and the contact angle test showed that the cotton fabric had super hydrophobicity. Compared with the modified cotton fabric grafted with LMA, the fixation of PS nanoparticles can significantly reduce the rolling angle of water droplets. The effect of dynamic superhydrophobicity was achieved. The softness of cotton fabric before and after modification was characterized by the measurement of bending stiffness. The results showed that the soft degree of cotton fabric was not changed by radiation grafting method and the wearing property was not affected.
【作者单位】：中国科学院上海应用物理研究所;
【基金】：国家自然科学基金(基金号51473183,11475246)资助项目
【分类号】：TS106
【正文快照】： **通讯联系人,E-mail:jingyeli@sinap.ac.cn动态超疏水是指水滴与材料表面的接触角大于150°且具有较小滚动角的现象[1].动态超疏水材料表面在防水、自清洁、油水分离、抗结冰等领域有着广泛的应用前景.近年来,对材料表面进行动态超疏水改性成为了人们的研究热点[2~8].作为超

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