不同代数超支化聚胺酯的制备及其在钕纳米粒子制备中的应用  

Preparation and Functionization of Hyperbranched Poly(amine-ester) of Different Generations

作　　者：莫尊理[1] 牛贵平[1] 李贺军[2] 刘艳芝[1] 孙亚玲[1] 陈红[1] 

机构地区：[1]西北师范大学化学化工学院,兰州730070 [2]西北工业大学材料科学与工程学院,西安710072

出　　处：《高分子通报》2006年第10期48-51,89,共5页Polymer Bulletin

基　　金：教育部高等学校博士学科点专项科研基金资助项目(20030699011);甘肃省自然科学基金(3ZS051-A25-050);西北工业大学博士论文创新基金(CX200309);甘肃省高分子材料重点实验室重点项目(2D-04-14)

摘　　要：以N,N-二羟乙基-3-胺基丙酸甲酯单体和季戊四醇(核)为原料,采用“准一步法”合成了具有端羟基的超支化聚胺酯(HPAE)。采用凝胶色谱、红外光谱、核磁共振和热重分析等对其进行了结构表征及性能探究。再以HPAE封装稀土粒子钕(Nd),制备出Nd复合纳米粒子,透射电镜(TEM)分析结果表明:随着HPAE代数增大,Nd纳米颗粒粒径越均匀,分散度越好。The synthesis of a series of polydisperse hyperbranched poly（amine-ester）s based upon pentaerythritol （as a core molecule） and N, N-diethylol-3-amine methylpropionate is described, proceeding in preudo-one-step manner. The molecular composition of HPAE was characterized by GPC, FT-IR, ^1H NMR and TGA. The thermoset of hyperbranched poly（amine-ester） synthesized in this study becomes better as the generation increases. So, those materials may be modified to meet particular application. Then highly uniform and monodisperse Nd nanoparticles, protected by hyperbranched poly（amine-ester）, were prepared in aqueous solution. Transmission electron microscopy （TEM） has been used to study the structure and characterization of the nanocomposites. From which it showed that Nd nanoparticles were formed inside HPAE and the size distribution fits a lognormal distribution as the generation increases. Those excellent dispersivity and good results allow for a complete prepare of nanoparticles by simple precedure.

关 键 词：超支化聚胺酯 复合纳米粒子 制备 功能化 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业] O614.335[理学—无机化学]