水溶性裂解型有机硅大分子光引发剂引发光聚合性能的研究  

Study on photoinitiability of a water-soluble photocleavage polysiloxane-based macromolecular photoinitiator

作　　者：潘河[1] 江盛玲[2] 王建生[1] 程继业[1] 孙芳[1] 

机构地区：[1]北京化工大学理学院,北京100029 [2]北京化工大学材料学院,北京100029

出　　处：《信息记录材料》2016年第1期25-29,共5页Information Recording Materials

摘　　要：以2-羟基-4'-(2-羟乙氧基)-2-甲基苯丙酮(2959)和氨基硅油为原料合成了双官能度的水溶性裂解型有机硅大分子光引发剂W-Si-(2959)2。通过紫外光谱和实时红外(RT-IR)研究了光引发剂的紫外吸收和光降解性能,以及引发剂含量和紫外光辐照强度对光聚合动力学的影响。结果表明,光引发剂的最大吸收峰在260nm处,随着紫外光辐照时间增加,紫外吸收峰逐渐减弱。增加光引发剂含量和紫外光辐照强度均可增加光聚合速率和单体最终转化率,同时也缩短了诱导期。通过扫描电子显微镜(SEM)考察了2959和W-Si-(2959)2引发的PTPGDA聚合膜表面的微观形貌,发现W-Si-(2959)2能有效降低光聚合体系氧阻聚作用。A water-soluble photocleavage polysiloxane-based macromolecular photoinitiator （W-Si-（2959）2） was synthesized by using 2-hydroxy-4＇-（2-hydroxyethoxy）-2-methyl-propiophe （2959） and amino polysiloxane as raw materials. The properties of UV/vis absorption and degradation were studied by UV absorption spectra. The effect of the concentration of W-Si-（2959）2 and the light intensity on the polymerization kinetics was investigated by real-time infrared spectroscopy （RT-IR）. The results show that W-Si-（2959）2 has a maximum absorption peak at 260 nm, and the intensity of the absorption peak tended to decrease against the increase of the UV irradiation time. Furthermore, with the increasing of the concentration of W-Si-（2959）2 and the light intensity, the photopolymerization rate and the final double bond conversion of the monomer were enhanced, and the induction period was shortened. The surface morphologies of the PTPGDA film initiated by 2959 and W-Si-（2959）2 were studied by scanning electron microscopy （SEM）. The results show that W-Si-（2959）2 can decrease the oxygen inhibition in the photopolymerization.

关 键 词：有机硅 水溶性光引发剂 引发光聚合 氧阻聚 

分 类 号：TQ31[化学工程—高聚物工业]