Hydrophobic coating of mica by piranha solution activation, silanization grafting, and copolymerization with acrylate monomers

被引：7
|
作者：
Wang, Linlin [1 ]
Liu, Yuelong [2 ]
Liu, Gousheng [1 ,3 ]
机构：
[1] East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[2] Jiangxi Sci & Technol Normal Univ, Sch Chem & Chem Engn, Nanchang 330013, Jiangxi, Peoples R China
[3] Nanchang Univ, Coll Chem, Nanchang 330031, Jiangxi, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2017年 / 134卷 / 25期
基金：
美国国家科学基金会;
关键词：
applications; clay; composites; grafting; mechanical properties; SHEAR-STIFF; NANOCOMPOSITES; NANOPARTICLES; SURFACES; MONOLAYERS; POLYMERS; CLAY;
D O I：
10.1002/app.44985
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Hydrophobic mica particles were prepared by piranha solution activation, silanization, and copolymerization with acrylate monomers. Its surface morphology, hydrophilic properties, and thermogravimetric analysis changed differently in comparison with those of pristine mica. Scanning electron microscopy (SEM) showed that the modified (001) mica surface changed from flat to coarse. Thermogravimetric curves demonstrated that silane coupling agents and the grafted polymer were anchored on the modifiedmica surface. The alternating surface polarity state was verified by different dispersion performances in the solvents. SEM images showed that the polypropylene (PP)/modified-mica composites had a better quality compatibility than the PP/untreated-mica composites. The PP/polymer-grafted-mica composites had improved mechanical properties, including stretching, tension, and impact properties. (C) 2017 Wiley Periodicals, Inc.
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页数：9
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