摘要
采用单分散聚合法和种子溶胀法,在乙醇/甲醇体系中以甲基丙烯酸甲酯(MMA)为单体、偶氮二异丁腈(AIBN)为引发剂、聚乙烯吡咯烷酮(PVP)为分散剂制备聚甲基丙烯酸甲酯(PMMA)高分子微球,并以此作为后继制备三维(3D)多孔结构锂电池材料的合成模板剂.讨论两种合成方法获得微球的粒径均匀性和粒径分布,认为单分散聚合法能获得较为理想的模板剂,研究此方法中单体介质比和引发剂浓度对微球粒径和分散性的影响,得出最佳合成条件为:MMA/medium=13.8%(质量分数,全文同),AIBN=6g时,合成微球的粒径最均匀,平均为3.8μm,粒径分布为0.103 2.
The monodispersion and seed swelling polymerization methods were employed to prepare polymethyl methacrylate （PMMA） microspheres in the ethanol/methanol system with methyl methacrylate （MMA） as monomer, azobisisobutyronitrile （AIBN） as initiator, vinyl pyrrolidone （PVP） as stabilizer. The obtained microspheres were used as a template to prepare three-dimensional muhiporous electrode materials for lithium battery. The diameter and size distribution of microspheres prepared by the above-mentioned two methods were researched, the result showed that monodispersion polymerization method was a better method to obtain more uniform particle template with narrower size distribution and good monodispersity. Effects of monomer, medium and initiator concentrations on the diameter and size distribution were discussed, the optimal synthesis condition was as follows： MMA/rnedium=13.8%（g/g）, AIBN=6 g, microspheres was uniform with 3.8 μm diameter and 0. 103 2 distribution coefficient.
出处
《湖北大学学报（自然科学版）》
CAS
2014年第2期148-153,共6页
Journal of Hubei University：Natural Science
基金
湖北省高等学校优秀中青年科技创新团队建设计划项目(T201225)
湖北省教育厅产学研合作重点项目(C2010071)
湖北省高等学校青年教师深入企业行动计划项目(XD2012434)
湖北第二师范学院优秀科研教师团队建设计划项目(2012K203)
湖北省教育科学"十二五"规划项目(2011B232)
湖北第二师范学院校管科学研究重点项目(2011A005)
湖北第二师范学院教学研究重点项目(2011007)
湖北第二师范学院校级化学重点学科建设计划项目(2013XZXK05)
湖北省重点实验室植物抗癌活性物质提纯与应用项目资助
关键词
分散聚合法
种子溶胀法
PMMA微球
三维多孔电极
模板剂
monodispersion polymerization method
seed swelling polymerization method
polymethyl methacrylate （PMMA） microspheres
3D multiporous electrode materials
template
