多巴胺改性硅橡胶的制备及性能研究  

Preparation and Properties of UA-co-PDMS by grafting of Dopamine

作　　者：丁燕[1] 郭东杰[1] 于敏[1] 戴振东[1] 

机构地区：[1]南京航空航天大学仿生材料与结构防护研究所,江苏南京210016

出　　处：《胶体与聚合物》2011年第3期117-119,127,共4页Chinese Journal of Colloid & Polymer

基　　金：国家自然科学基金(50805076);国家自然基金重大国际合作研究项目(60910007)

摘　　要：通过硅氢化反应,在催化剂氯铂酸作用下,使聚氢基硅氧烷(PMHS)上的Si-H键与十一烯酸(UA)上的烯基发生加成,过量的Si-H键与聚烯基硅氧烷(PMVS)反应,合成了含羧基的十一烯酸-硅橡胶共聚物(UA-co-PDMS);接着利用UA-co-PDMS表面的羧基和多巴胺(DA)发生胺化反应,制得了多巴胺修饰的硅橡胶(DA/UA-co-PDMS)。结果表明,经十一烯酸改性并在表面修饰了多巴胺的硅橡胶,与水和甘油的接触角由107°,110°分别减小到44.69°,49.50°,表面能为55.05mJ/m2,提高了4.7倍。By hydrosilation reaction, the chloroplatinic acid - catalyzed coupling reaction of Si-H bond in PMHS with vinyl in UA and amination reaction of catechol in dopamine （DA） with carboxyl on the surface of UA-co-PDMS which was synthesized by excessive Si-H bond and alkenyl polysiloxane （PMVS） were carried out. The results showed that the contact angle of UA-co-PMDS film by grafting DA on water and glycerin decreased from 107~, 110~to 54~, 69~, respectively, and the surface energy reached 55.05mJ/m2, which increased 4.7 times.

关 键 词：硅橡胶 十一烯酸 多巴胺 硅氢化 仿壁虎 

分 类 号：TQ333[化学工程—橡胶工业]