【摘要】 以二苯甲酮-4,4′-二甲酸(BDA)为共聚单体，通过缩合聚合制备了一系列具有不同组成的聚(二苯甲酮-4,4′-二甲酸/己二酸癸二醇酯)(PDBA)高分子光引发剂。核磁共振氢谱(~1H NMR)及差示扫描量热分析(DSC)结果显示，当BDA摩尔含量不大于30%时，PDBA的熔点随着BDA含量的增加而降低，且其值介于45.6～77.4℃之间。核磁共振氢谱、红外吸收光谱(FTIR)和凝胶渗透色谱(GPC)证明产物为主链含二苯甲酮基这一光引发基团共聚酯。紫外吸收光谱显示，BDA摩尔含量20%的共聚物PDBA-20与二苯甲酮(BP)具有类似的紫外吸收行为，而其迁移率显著低于BP。在引发聚乙二醇二丙烯酸酯(PEGDA)紫外固化和超高分子量聚乙烯(UHMWPE)紫外交联时，PDBA-20表现出与BP基本相似的引发活性。更多还原

【Abstract】 A series of poly(decylene benzophenone dicarboxylate-co-adipate)(PDBA) copolymer photoinitiators with different composition were prepared using benzophenone-4,4′-dicarboxylic acid(BDA) as a comonomer via polycondensation. The melting point of PDBA with BDA content lower than 30% decreased with the content of BDA and the value was ranging from 45.6 to 77.4 ℃. ~1H NMR, FTIR and GPC confirmed the copolyester structure with photoinitiating functional groups in the main chain. UV absorption spectra revealed PDBA-20(PDBA with BDA content of 20%) had similar UV absorption behavior as benzophenone(BP) while its migration rate was significantly lower than that of BP. In addition, PDBA-20 showed almost the same photoinitiating efficiency as BP for the UV curings of polyethylene glycol diacrylate(PEGDA) and ultra-high molecular weight polyethylene(UHMWPE).更多还原