摘要
首先以苯乙烯(St)及3-甲基丙烯酰氧基三甲氧基硅烷(MPS)为反应单体,通过细乳液聚合制备表面功能化聚硅氧烷微球,然后利用该微球表面的硅羟基及硅氧烷基团对Ag+的吸附及还原作用原位制备聚硅氧烷-Ag纳米复合微球。采用透射电镜(TEM)、紫外(UV-Vis)、热重分析(TG)及X射线衍射(XRD)等对聚硅氧烷-Ag纳米复合微球的形貌和组成进行了表征。研究表明:改变MPS和硝酸银的用量可调控聚硅氧烷-Ag纳米复合微球的形貌及表面银含量;抗菌实验结果表明,聚硅氧烷-Ag纳米复合微球具有较好的抑菌性。
Surface functionalized polysiloxane microspheres were synthesized by mini-emulsion polymerization withβ-methacryloxy propyltrimethoxy silane（MPS）and styrene（St）.Polysiloxane-Ag nanocomposite spheres were prepared by in-situ adsorption and reduction of Ag＋with the silanol and siloxane groups on the surface of polysiloxane microspheres.The morphology and component of polysiloxane-Ag nanocomposite spheres were characterized by TEM、UV-Vis、TG and XRD.Results showed that the morphology and the content of Ag on polysiloxane-Ag nanocomposite spheres could be tuned by the amount of MPS and silver nitrate.Furthermore,the polysiloxane-Ag nanocomposite spheres exhibited good antibacterial property.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2016年第2期233-238,共6页
Journal of Functional Polymers
基金
国家自然科学基金(51003041)
关键词
聚硅氧烷
银纳米颗粒
复合微球
抑菌性
polysiloxane
Ag nano-particle
composite sphere
antibacterial property
