聚乙二醇双丙烯酸酯的紫外光聚合

Synthesis of Polyethylence Glycol Diacrylate by UV Photopolymerization

以1-[4-(2-羟乙氧基)-苯基]-2-羟基-2甲基丙酮为光引发剂,通过紫外光自由基聚合制备了交联网状聚乙二醇双丙烯酸酯共聚物水凝胶。研究结果表明,随着光照时间的增加,单体共聚的转化率提高;随着引发剂浓度的增大,单体溶液中自由基增多,聚合速度增大。FI-IR结果表明PEGDA单体经30min紫外光照射后聚合完全。

The hydrogel poly （ethylence glycol diacrylate） crosslinked network copolymers were prepared by UV photo-polymerization, with the Igracure 2959 （2-hydroxy-1-[ 4-（hydroxyethoxy） phenyl]-2-methyl-l-propanone） as photoinitiator. The influences of the initiator concentration, radiation time and reaction atmosphere were investigated. The reaction rate increased with the radiation time and initiator concentration increasing. Experimental results show that PEGDA hydrogels are photopolymerized completely using UV light with 30 min.