摘要
水溶性高分子AM /AMPS系由丙烯酰胺 (AM)和 2 丙烯酰胺基 2 甲基丙磺酸 (AMPS)组成 .本文应用光化学方法对AM/AMPS共聚物进行改性 ,得到活性可聚合产物 .应用这种方法 ,在高分子链上生成的过氧化物含量随UV光照时间有明显变化 ,照射 5— 1 0min过氧化物含量最高 .值得指出 ,较高的过氧化物生成量仅在采用二苯酮作为光敏剂和保持低温的条件下才能得到 .这种活性改性AM/AMPS共聚物 ,可用光聚合或热聚合方法引发不同烯类单体共聚合 ,得到不同用途的接枝
Water soluble AM/AMPS copolymer composed of acrylamide(AM)and 2-acrylamido-2-methyl-propanesulfate(AMPS)was modified to obtain a reactive polymerizable product by photochemical process.The content of active peroxide group formed in the polymer chain varied obviously with UV irradiation time and a maximum appeared at irradiation time of 5-10 min.The high yield of peroxide formed was only obtained in the presence of benzophenone as photosensitizer at low temperature.Sequentially,the photochemically modified reactive AM/AMPS polymer is sufficient to initiate copolymerization with different vinyl monomers by photo chemical or thermal polymerization process, giving useful grafting/crosslinking copolymer products.
出处
《感光科学与光化学》
CSCD
北大核心
2002年第4期247-252,共6页
Photographic Science and Photochemistry
基金
<国家重点基础研究发展规划>项目 (G1 9990 2 2 5 0 3)
