【摘要】 以 1,1,1 三羟甲基丙烷为核 ,4 N ,N 二 (2 羟乙基 ) 4 酮丁酸为单体 ,按照一定比例 ,合成理论上第二代羟端基超支化聚酰胺酯 ,再与丙烯酰氯反应获得丙烯酸化超支化聚酰胺酯预聚物 (HAPAE 2 A) ,它在光引发剂存在下经紫外光辐照可以快速固化成膜 .根据1HNMR谱测定所得产物的反应程度为 85 % .采用凝胶渗透色谱和气相渗透法测定所得产物的分子量分布和数均分子量分别为 2 .16和 16 2 0g/mol,与其理论分子量相比 ,其反应程度为 89% ,从而估算产物实际端基丙烯酸酯双键数为 10左右 .采用光 -差热分析仪研究HAPAE 2 A的反应动力学 ,发现当体系中加入多官能团单体 ,如三羟甲基丙烷三丙烯酸酯、己二醇二丙烯酸酯和乙氧基一缩二乙二醇丙烯酸酯时 ,多官能团单体的官能度及含量会对体系的最大光聚合反应速率和不饱和双键的反应程度产生较大的影响 .通过动态力学热性能测试发现HAPAE 2 A光固化膜的玻璃态转化温度随多官能团单体的加入而提高更多还原

【Abstract】 The ultraviolet light curable hyperbranched aliphatic polyamidester (HAPAE-2-A) was synthesized based upon 4-N,N-di(2-hydroxyethyl)-4-ketobutyric acid as a AB 2 monomer, and 2-ethyl-2-(hydro~xy~methyl)-1,3-propanediol as a core molecule, then modified with acryloyl chloride. The molar mass and polydispersity of the polymer were measured by VPO and GPC as 1620 g/mol and 2.16, respectively. The reaction degree was obtained to be over 85% by 1H NMR. That is HAPAE-2-A obtained possesses, practically, an average of over 10.2 of the end double bonds in each molecule. The photopolymerization kinetics has been determined by Photo-DSC measurements. The results show that the addition of multi-functional comonomer with low viscosity can efficiently increase the maximum polymerization rate and the unsaturation conversion in the cured films, as well as raising glass transition temperature.更多还原