聚(丙烯酸酯-硅氧烷)杂化乳胶粒子的制备及性能  

Preparation and Properties of Poly(acrylate-siloxane)Hybrid Latex Particles

作　　者：张继生 米扬 王艳 赵磊 秦甜甜 孟凡成 刘国军 ZHANG Jisheng;MI Yang;WANG Yan;ZHAO Lei;QIN Tiantian;MENG Fancheng;LIU Guojun(School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116000,Liaoning,China)

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116000

出　　处：《材料导报》2023年第23期215-220,共6页Materials Reports

基　　金：辽宁省教育厅面上项目(LJKZ0533)。

摘　　要：采用半连续-核壳乳液聚合技术制备了硬核-软壳且直链型双乙烯基封端的聚硅氧烷(VPS)沿半径方向非均匀分布的聚(丙烯酸酯-硅氧烷)杂化乳胶粒子。通过TEM、粒径分析、DSC、正置金相显微镜、EDS、ATR-FTIR、接触角(CA)等对杂化乳胶粒子及其膜的组成、结构和性能进行了表征与测试。结果表明:杂化乳胶粒子呈核壳结构,随壳层VPS含量增加,其平均粒径由119.4 nm增大到138.4 nm;VPS可迁移、富集到乳胶膜表面形成尺寸约1μm的VPS相,VPS含量增加和退火处理可提高杂化乳胶膜表面VPS的富集程度和相畴尺寸;杂化乳胶膜双重玻璃化转变的微相分离结构及VPS相畴的形成使其抗黏连性、柔韧性和硬度均得到提高,水接触角由61°提高到104°,疏水性显著增强,吸水率明显降低。Poly(acrylate-siloxane)hybrid latex particles with hard core soft shell structure and non-uniform distribution along the radius of particle for linear divinyl-terminated polysiloxane(VPS)were prepared by semicontinuous core-shell emulsion polymerization.The composition,structure,and properties of the hybrid latex particles and their films were characterized and tested by transmission electron microscope(TEM),particle size analysis,differential scanning calorimetry(DSC),metallographic microscope,energy dispersive spectrometer(EDS),fourier transform infrared spectroscopy(FTIR),and contact angle(CA).The results show that the hybrid latex particles have a core-shell structure,and the average particle size increases from 119.4 nm to 138.4 nm with the increase of VPS content in the shell layer.The increase of VPS content and annealing treatment can improve the surface enrichment degree and domain size of VPS.The microphase separation structure of hybrid latex film with double glass transition phenomenon and the formation of the VPS domain phase have improved its block resistance,flexibility and hardness at the same time.The water contact angle has a increase from 61°to 104°,the hydrophobicity is increased significantly,and the water absorption is decreased significantly.

关 键 词：丙烯酸酯 双乙烯基封端聚硅氧烷 杂化乳胶粒子 核壳结构 

分 类 号：TQ31[化学工程—高聚物工业]