摘要
以单官能团笼状结构倍半硅氧烷(POSS)为引发剂,氯化亚铜/2,2-联吡啶为催化体系,甲苯为溶剂,采用原子转移自由基聚合法(ATRP)制备了大分子引发剂POSS/PMMA和POSS/PMMA-PS嵌段聚合物。通过核磁共振(1H-NMR)、X射线光电子能谱(XPS)和凝胶渗透色谱(GPC)表征了大分子引发剂和嵌段聚合物的结构,实现了POSS在聚合物中的单分散。此外,热重分析(TGA)结果表明,POSS/PMMA和POSS/PMMA-PS嵌段聚合物的分解温度与纯聚甲基丙烯酸甲酯(PMMA)相比分别提高了60℃和151℃。
Macroinitiator polyhedral oligomeric silsesquioxane/polymethylmethacrylate （POSS/PMMA） was synthesized through atom transfer radical polymerization （ATRP） method using monofunctional POSS as an initiator,CuCl/Bpy as catalyst system and toluene as solvent.By using macroinitiator POSS/PMMA and CuCl/Bpy as catalyst system,the block copolymers POSS/PMMA-PS was prepared.The structures of macroinitiator and block copolymer were characterized by Fourier transform infrared spectroscopic（FT-IR）,hydrogen nuclear magnetic resonance spectrum（^1H-NMR）,gel permeation in chromatography（GPC） and X-ray photoelectron specroscopy （XPS）,results showing the mono-dispersion of POSS was achieved.The thermogravimetry analysis（TG） investigation indicates that the thermal stability of polymer is improved,which is due to the incorporation of POSS unit.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第6期159-161,166,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50673023)
合肥工业大学学生创新基金资助项目(XS08032)
关键词
笼状结构倍半硅氧烷
原子转移自由基聚合
嵌段聚合物
热性能
polyhedral oligomeric silsesquioxane
atom transfer radical polymerization
block copolymers
thermal stability
