摘要
本工作合成了一系列不同丙烯酸酯和丙烯酸组成的共聚物,其中丙烯酸单元含量在13～20％之间,然后使之与四基丙烯酸缩水甘油酯反应,形成带有甲基丙烯酸酯侧链的预聚体。用红外光谱法检测1640cm^(-1)处双键峰的变化,测定了体系的光交联速度。结果表明,光交联过程及固化膜中剩余双键含量与预聚体的性质及交联剂官能团的性能有关。预聚体与交联剂官能团量的比例,对固化速度有明显影响。以等摩尔比反应时,速度最快。不同光敏剂的引发效率为苯乙酮衍生物>安息香醚类>芳香酮/胺。
Several water soluble prepolymcrs composed of different acrylates (EA, BA ,MMA) and acrylatic acid (AA) containing 13-20% (AA) units, part of which react with glyoidyl methacrylate (GMA), producing copolymers with methacrylate side groups were prepared. The rate of photocrosslinking was followed by infrared spectral cliange of double bond (1640cm-1). The photocrosslinking process and the amount of residual unsaturation in the cured film were shown to depend primarily on the nature of prepolymer and on the functionality of crosslinking agents. The influence of ratio between prepolymer and crosslinking agent on the rate indicated that optimal result was obtained only in near to the value of molar equivalent ratio. A variaty of commercial photoinitiators was examined and the initiation efficiencies increase in the order; acetophcnone derivatives > benzoin ethers > aromatic keton/amine.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1993年第3期43-48,共6页
Polymer Materials Science & Engineering
关键词
光交联
水溶性
丙烯酸树脂
UV crosslinking resin, photocrosslinking, water soluble acrylic ester.
