【摘要】 基于不同摩尔比哌啶和三羟甲基丙烷三丙烯酸酯(TM PTA)的反应,合成了系列两亲性超支化聚(酯-胺),设计哌啶与TM PTA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。更多还原

【Abstract】 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（）¹H-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.更多还原