摘要
基于不同摩尔比哌啶和三羟甲基丙烷三丙烯酸酯（TMPTA）的反应，合成了系列两亲性超支化聚（酯-胺），设计哌啶与TMPTA摩尔比为1：1、1：2和1：3的模型反应，通过分析模型反应产物的氢核磁谱图，确定了化学位移为4．0～4．2间各峰的归属．进而可用来计算聚合物中各种特征结构单元的相对含量及支化度。采用动态光散射和透射电镜技术分析该聚合物在丙酮／酸性水溶液中的聚集行为，研究了聚合物结构和溶液条件对聚集体尺寸的影响。
A series of hyperbranched poly （easter-amine）s （HPEA） were synthesized by Michael addition reaction between trimethylolpropanetriacrylate （TMPTA） and piperazine at various molar ratios. Based on analysis of the 1^H-NMR spectra of model reaction products derived from TMPTA and piperidine at molar ratio of 1 ： 1, 1 ： 2 and 1 ： 3, the characteristic peaks within 4.0-4.2 were used to distinguish the characteristic structural units in HPEA. The aggregation behaviors of HPEA in acetone-acidic water selective solvent were studied by dynamic light scattering and TEM techniques. The influence of polymer structure and the solution conditions on the size of the aggregates were investigated.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第5期136-139,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(20204005
50233030)
关键词
超支化聚(酯-胺)
结构分析
两亲性
聚集行为
hyperbranched poly （easter-amine）
structural analysis
amphiphilic
aggregation be havior
