摘要
水介质中以表面引发ATRP法在单分散的二氧化硅微球表面接枝了一层PMMA聚合物刷,然后通过水解得到PMAA聚电解质刷。通过控制ATRP的反应时间得到了不同分子量且分子量分布较窄的聚电解质刷。结果表明,接枝硅烷偶联剂APTES的最佳反应方式为静置反应,对于1 g微球最佳接枝量为4 mL,聚电解质刷的分子量随ATRP反应时间增长而增大。
Mono-dispersed silica nanoparticles were grafted by PMMA brushes in the aqueous media by ATRP. And then the nanoparticles with PMAA brushes were obtained after hydrolysis of PMMA. The poly-electrolyte brushes with different molecular weight and low PDI could be prepared via adjusting the ATRP reaction time. Results showed that the molecular weight increased with the ATRP reaction time. Grafting of the coupling agent achieved its best effect when the reaction was taken without stirring,1 g nanoparticles and 4 mL APTES was the optimal ratio for the functionalization.
出处
《应用化工》
CAS
CSCD
2014年第8期1419-1422,共4页
Applied Chemical Industry
基金
安徽省高等学校自然科学研究重点项目(KJ2013A014)
作者简介
刘杨华(1987-),男(满族),河北承德人,安徽大学在读硕士研究生,师从周艺峰教授,主要从事功能高分子材料的研究。电话:15805698632.E-mail:msliu@163.com
周艺峰(1962-),E-mail:yifengzhou@126.com