摘要
采用苯乙烯磺酸钠电荷稳定分散聚合体系,在甲醇/水混合溶剂中,通过后滴加功能单体4-烯丙氧基-2-羟基苯甲酮(BP-OH),制备出表面带有二苯甲酮光引发基团的聚苯乙烯(PS)微球。研究了功能单体BP-OH的补加时间及总反应时间对微球形貌及功能基团结合量的影响,并将所制备的功能性PS微球在紫外光辐照下引发荧光单体7-甲基丙烯酰氧乙基-4-甲基香豆素(MCMA)反应;并通过场发射扫描电子显微镜(FESEM)、傅里叶变换红外光谱(FT-IR)、紫外可见光谱(UV-V is)及荧光显微镜(FM)对微球进行测试表征。结果表明,所制备的微球具有光引发活性。
Polystyrene （PS） mierospheres with benzophenone groups on the surface have been produced by a twostep polymerization method using sodium styrenesulfonate-stabilized dispersion polymerization in a methanol-water mixed solvent. The effects on the particles of varying the addition time of the functional monomer 4-allyloxy-2- hydroxybenzophenone （BP-OH） , and the polymerization time were studied. Under UV irradiation, the fluorescent monomer 7-methacryloyl-4-methylcoumarin could undergo polymerization with the functional PS particles. Characterization of the particles was performed by field emission scanning electron microscopy （FESEM）, Fourier transform infrared spectroscopy （FT-IR）, UV-Visible spectroscopy and fluorescence microscopy （FM）. The results indicated that the resulting particles possessed photoreaetivity.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第1期77-82,共6页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
长江学者和创新团队发展计划(ITT0706)
关键词
分散聚合
电荷稳定
光活性
聚苯乙烯
微球
dispersion polymerization
charge-stabilized
photoreactive
polystyrene
microsphere
