硅橡胶表面亲水改性及其性质研究  

Surface Hydrophilic Modification of Silicone Rubber and Its Properties

作　　者：张宇轩 郝冬冬 丁永红 ZHANG Yuxuan;HAO Dongdong;DING Yonghong(Changzhou University,Changzhou 213100,China;Changzhou University Huaide College,Taizhou 214500,China)

机构地区：[1]常州大学材料科学与工程学院,江苏常州213100 [2]常州大学怀德学院,江苏泰州214500

出　　处：《橡胶工业》2023年第2期105-110,共6页China Rubber Industry

基　　金：江苏省研究生科研与实践创新计划项目(KYCX20_2531)。

摘　　要：采用等离子体处理硅橡胶表面,引入活性基团,然后将引发剂2-溴代异丁酰溴(BIBB)通过亲核取代接枝在含有活性基团的硅橡胶表面,最后采用表面引发原子转移自由基聚合(SI-ATRP)将聚乙烯基吡咯烷酮(PVP)接枝在硅橡胶表面。通过傅里叶变换红外光谱分析、X射线光电子能谱分析和场发射扫描电子显微镜分析证明,BIBB和PVP成功接枝到硅橡胶表面;通过水接触角测试发现,硅橡胶的水接触角由改性前的110.7°最大幅度下降至PVP接枝后的36°,PVP接枝改性硅橡胶的表面亲水性能得到明显改善。In this study,active groups were introduced onto the surface of silicone rubber by plasma treatment.Then the initiator 2-bromoisobutyryl bromide(BIBB)was grafted on the surface of the silicone rubber containing active groups through nucleophilic substitution,and polyvinylpyrrolidone(PVP)was grafted onto the silicone rubber by surface initiated atomic transfer radical polymerization(SI-ATRP).The test results from Fourier infrared spectroscopy,X-ray photoelectron spectroscopy and field emission electron scanning microscope showed that BIBB and PVP were successfully grafted on the surface of silicone rubber.Through the water contact angle test,it was found that the water contact angle of the silicone rubber surface decreased from 110.7°to 36°after PVP graft,showing improved surface hydrophilicity.

关 键 词：硅橡胶 聚乙烯基吡咯烷酮 表面改性 表面引发原子转移自由基聚合 亲水性能 

分 类 号：TQ333.93[化学工程—橡胶工业]