利用界面聚合技术获得了新型光信息记录材料光热敏微胶囊。借助荧光光谱及红外光谱技术研究了染料前体ODB-2对光引发剂激发态及光热敏微胶囊内部光聚合特性的影响。实验结果表明染料前体在紫外的光吸收竞争造成光引发剂荧光激发谱与发射光谱强度的降低,引起光引发剂激发态分子数的减少,进而影响到光引发剂初级自由基的量子产率以及光聚合的反应过程;在光热敏微胶囊内部发现单体光聚合速度与最终聚合程度随染料前体浓度的增加均减小,且不同种类染料前体对微胶囊内部光聚合的影响程度也不相同。
The light-thermal sensitive microcapsule was synthesized with interfacial polymerization method,which was a new type of optical information recording function material.It was investigated that the dye ODB-2 effects on the excitation state of photoinitiator and the polymerization property in microcapsule by fluorescence spectrum and infrared spectrum.The results show that photo-absorption of dye precursor in ultraviolet region causes the fluorescence spectrum intensity of photoinitiator to decrease,and make the number of molecules in excited state reduce.The quantum yield of primary radical and proceeding of photopolymerization is affected by the dye precursor.The speed and extent of polymerization in microcapsule decreases as dye precursor concentration increases.The degree of influences of different kinds of dye on photo-polymerization is different.