摘要
采用化学气相沉积聚合(CVDP)的方法制备了聚对亚苯基二亚甲基(PPX)涂层,再通过发烟硫酸的化学表面改性成功地在PPX的芳香环上引入磺酸基团,可作为进一步功能化的反应基团。与PPX相比,表面磺化改性PPX(PPX-SO3Na)的接触角变小,亲水性增加,更有利于作为生物医用材料。采用原子力显微镜(AFM)测定PPX和磺化PPX的表面形貌,结果表明,表面磺化改性后的PPX变得更光滑,更有利于作抗凝血涂层材料。Fenton试剂测得PPX-SO3Na的抗化学氧化时间略低于PPX,但由于膜的主链主要是由苯环连接而成的,相对其它常用聚合物来说依然具有较好的抗化学氧化性能。
Poly（p-xylylene） （PPX） was prepared by chemical vapor deposition polymerization （CVDP）. Sulfonie group, which can be used as the reactive group for further funetionalization of PPX, was then successfully introduced into PPX backbone by chemical surface modification. Compared with PPX, the sulfonated PPX （PPX-SO3Na） has lower water contact angle and better hydrophilieity, which is useful for biological materials. Atomic force microscopy （AFM） was used to study the surface morphology of PPX and PPX-SO3Na. It is found that the surface of PPX-SO3Na is much smoother than that of PPX, which is useful for anti-thrombin. Although a little lower anti-oxidation time of PPX-SO3Na was observed, the chemical oxidation stability of PPX-SO3Na is still better than normal polymer materials.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2006年第9期1463-1465,共3页
Journal of Functional Materials
关键词
化学气相沉积聚合
聚对亚苯基二亚甲基
磺化
表面改性
chemical vapor deposition polymerization
poly（p-xylylene）
sulfonation
surface modification
