梳状聚氨酯/聚丙烯酸异冰片酯共聚乳液的制备与性能  

Preparation and Properties of Comb-Branched Polyurethane/Polyisobornyl Acrylate Copolymerization Emulsion

作　　者：陈勇军[1] 罗远芳[1] 邓湘华[1] 刘芳[1] 贾德民[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2009年第12期23-27,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金团队项目(0309172)

摘　　要：以丙烯酸异冰片酯(IBOA)为单体、梳状水性聚氨酯(CWPU)预聚物为分散剂,制备了梳状水性聚氨酯/聚丙烯酸异冰片酯(CWPU/PIA)共聚乳液.采用傅里叶变换红外光谱分析、透射电镜分析、粒径分析和接触角测定等方法研究了丙烯酸异冰片酯含量对共聚乳液性能的影响.结果表明:CWPU/PIA共聚乳液的粒子呈一种以CWPU为壳、PIA为核的核-壳结构;粒子的粒径随IBOA含量的增加而增大,当IBOA含量小于40%时,CWPU/PIA共聚乳液粒子的粒径小于150nm;IBOA含量对CWPU/PIA胶膜的表面接触角影响不大,但对吸水率影响显著,随着IBOA含量的增加,胶膜的吸水率降低,耐水性提高。Comb-branched waterborne polyurethane/poly （ isobornyl acrylate ） （ CWPU/PIA ） copolymerization emulsion was prepared, with isobornyl acrylate （IBOA） as the monomer and with CWPU as the dispersant. Then, the effect of IBOA content on the properties of CWPU/PIA copolymerization emulsion was analyzed by means of FT-IR, TEM, particle size distribution and contact angle measurements. The results show that （ 1 ） the particles in CWPU/PIA copolymerization emulsion possess a core-shell structure with CWPU as the shell and with PIA as the core; （2） the particle size increases with the IBOA content; （3） at a IBOA content of less than 40%, the average particle size of CWPU/PIA copolymerization emulsion is below 150nm; （4） IBOA content has no obvious influence on the contact angle of CWPU/IBOA film, but it greatly affects the water absorptivity ; and （5） with the increase in IBOA content, the water absorptivity of the films decreases while the water resistance improves.

关 键 词：梳状聚合物 水性聚氨酯 丙烯酸异冰片酯 共聚乳液 性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]