羧甲基壳聚糖基水溶性高分子紫外线吸收剂的合成与表征  

Synthesis and characterization of carboxymethyl chitosan based water soluble ultraviolet absorbers

作　　者：于淑娟[1] 杨芳[1] 梁春群[1] 莫羡忠[1] 

机构地区：[1]广西师范学院化学与生命科学学院,广西南宁530001

出　　处：《日用化学工业》2011年第1期35-38,共4页China Surfactant Detergent & Cosmetics

基　　金：广西教育厅资助项目(200807LX436)

摘　　要：以2,4-二羟基二苯甲酮(UV-0)与氯乙酰氯为原料合成了中间体2-羟基-4-氯乙酸酯基二苯甲酮,然后使其与羧甲基壳聚糖反应,合成了一系列含有二苯甲酮结构的羧甲基壳聚糖基紫外线吸收剂(CMC-g-HCBP)。采用IR,UV,XRD,1HNMR等对产物进行了结构表征。测定结果表明,接枝产物在240～400 nm内均有较强的紫外吸收,并在332 nm处有最大紫外吸收;产物有较好的光稳定性。An intermediate, 2 - hydroxy - 4 - chloroacetate - benzophenone （HCBP） was synthesized by 2,4 - dihydroxy - benzophenone （ UV - 0 ） and chloroacetyl chloride as starting materials. Then a series of carboxymethyl chitosan based water soluble ultraviolet absorbers （ CMC - g - HCBP） were synthesized by grafting reaction of HCBP on carboxymethyl chitosan in isopropanol with the presence of sodium hydroxide. The structures of the intermediate （HCBP） and grafted products （CMC - g - HCBP） were characterized by IR, UV, XRD and 1HNMR. The results of ultraviolet absorption showed that anyone of the grafted products has a strong ultraviolet absorption capacity ranging from 240 -400 nm, while the maximum absorption peak presents at 332 nm. The photostability test indicated that the grafted products have good stability.

关 键 词：紫外线吸收剂 羧甲基壳聚糖 2 4-二羟基二苯甲酮 

分 类 号：O631.3[理学—高分子化学]