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OALib Journal期刊
ISSN: 2333-9721
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pmma/sio2纳米复合膜表面性能的研究
DOI: 10.3969/j.issn.1671-7627.2007.03.001, PP. 1-6
Keywords: 聚甲基丙烯酸甲酯,纳米sio2,纳米复合膜,表面性能
Abstract:
采用有机硅处理剂对纳米sio2进行化学修饰,得到表面官能团化的纳米sio2,然后再通过溶液聚合法制备了聚甲基丙烯酸甲酯/二氧化硅(pmma/sio2)纳米复合膜.利用傅里叶红外光谱仪(ft-ir)、扫描电镜(sem)、原子力显微镜(afm)、水接触角仪(wca)对其进行表征.结果表明,经有机硅处理剂官能团化的纳米sio2能很好地分散于pmma基体中,sio2有富集到聚甲基丙烯酸甲酯表面的趋势,加入纳米sio2降低了聚甲基丙烯酸甲酯表面自由能,提高了膜表面的水接触角.经四氢呋喃溶剂刻蚀后,膜表面的水接触角显著提高,得到憎水型pmma/sio2纳米复合膜.
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