核壳型聚硅氧烷/聚丙烯酸酯共聚物乳液的微波辐射制备与性能研究  

Preparation and characterization of SI/PEA based emulsion under microwave irradiation

作　　者：马丽 黄建建 何慧[2] 杨波[2] 贾德民[2] 郭东杰 陈宝元 Ma Li;Huang Jianjian;He Hui;Yang Bo;Jia Demin;Guo Dongjie;Chen Baoyuan(College of Materials and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001;Department of Polymer Material and Engineering,South China University of Technology,Guangzhou 510640;Henan Zhongbao Technology Co.,Ltd.,Zhengzhou 450002)

机构地区：[1]郑州轻工业大学材料与化学工程学院,郑州450001 [2]华南理工大学材料科学与工程学院,广州510640 [3]河南中包科技有限公司,郑州450002

出　　处：《化工新型材料》2022年第10期149-153,共5页New Chemical Materials

基　　金：国家自然科学基金(U1704149);河南省科技攻关项目(162102210058)。

摘　　要：利用微波辐照技术,采用半连续种子乳液聚合法制备了具有明显核壳结构的聚硅氧烷/聚丙烯酸酯复合乳液。利用傅里叶变换红外光谱、粒度分析、透射电镜、热重分析等技术手段对产物进行系统化表征,研究了聚硅氧烷含量对乳液聚合和复合胶膜性能的影响。结果表明:复合乳胶粒的平均粒径均小于100nm,具有明显的核/壳结构;随着聚硅氧烷含量的增加,复合乳液中乳胶粒粒径增大,分布变窄,反应稳定性变差,但仍能制得核/壳型复合乳液。胶膜的力学性能变差,热稳定性无明显降低。胶膜吸水率降低,表面接触角逐渐增大。Emulsion polymerization assisted by microwave irradiation(MI) owns many advantages such as high yield and energy/time saving.By using MI technique, polysiloxane/polyacrylate(SI/PEA) based emulsoid particles with evident core-shell structure was prepared via semi-continuous seeded emulsion polymerization.Related physiochemical techniques including transmission electron microscopy, size distribution analyzer and thermogravimetric analysis were used to characterize the morphology and size distribution of the emulsoid particles, and the thermal stability of the resultant emulsoid film.It was concluded that, the emulsoid particles were made of SI cores coated by PEA shells, their average size was smaller than 100 nm.With increasing the amount of PEA,the mean size of the emulsoid particles increased, and its distribution narrowed.The water uptake of the prepared emulsoid film decreased, while its mechanical properties got declined.

关 键 词：微波辐照 核/壳结构 硅丙乳液 聚硅氧烷含量 

分 类 号：O634.41[理学—高分子化学]