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二氧化硅颗粒表面硅烷化对其润湿性能的影响
作者: 刚1 王克亮1 逯春晶1 黄传鑫2  影2 
单位:(1. 东北石油大学提高采收率研究所 大庆 163318 2. 吉林大学 无机合成与制备化学国家重点实验室 长春 130012) 
关键词:二氧化硅 硅烷偶联剂 Pickering乳液 表面改性 接触角 
分类号:O647.3
出版年,卷(期):页码:2018,46(7):0-0
DOI:
摘要:

采用3-氨丙基三乙氧基硅烷(APTES)接枝改性二氧化硅颗粒表面,通过调节APTES的接枝密度(颗粒表面每平方纳米接枝硅烷偶联剂分子的个数)定量控制二氧化硅颗粒在石蜡/水界面上的接触角。结果表明:随着APTES在二氧化硅颗粒表面接枝密度的增加,颗粒由超亲水转变为疏水,在油水界面的接触角从15°增加到116°;改性颗粒在石蜡/水界面形成固态膜,当石蜡低温固化后,改性颗粒在石蜡相中的部分被掩盖;相比于未改性颗粒,改性后的颗粒在石蜡表面形成的包裹层更加紧密有序。

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参考文献:
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