Preparation and Characterization of Polystyrene/Laponite Nanocomposites Based on In-situ Emulsion Polymerization

被引：0
|
作者：
Li G. [1 ]
Shen J. [2 ]
Zhao X. [2 ]
Zhang X. [1 ]
Kan C. [2 ]
机构：
[1] State Key Laboratory of Tribology, Tsinghua University, Beijing
[2] Key Laboratory of Advanced Materials of Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 03期
关键词：
Composite latex; Intercalation modification; Laponite; Polystyrene;
D O I：
10.16865/j.cnki.1000-7555.2020.0127
中图分类号：
学科分类号：
摘要：
In this paper, the polystyrene (PSt)/laponite composite was prepared by in-situ emulsion polymerization, and the compatibility between laponite and PSt was significantly improved by the chemical modification of quaternary ammonium salt on the laponite. Effects of the modification degree of laponite on the properties of the composite latexes and corresponding composite materials were investigated by TEM, SEM, XRD, DSC and TGA. In addition, the PSt/laponite composite latex was introduced into a poly(styrene-co-butyl acrylate) latex to form the composite latex films, and the properties of the as-prepared films including tensile strength and water vapor permeability were investigated. It is found that the modification degree of laponite is the key factor to influence the preparation and property of the composite latex. Introduction of laponite has obvious effect on the glass transition temperature (Tg) and heat resistance of PSt, the tensile strength (Rm) of the latex film obtained by introducing the 5% PSt/laponite component into the PSB system is increased from 8.3 MPa to 14.8 MPa, and its water vapor permeability is improved 19% compared with the latex film obtained by adding the same proportion of unmodified PSt/laponite composite emulsion. © 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：1 / 9and16
页数：915
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