偶氮苯改性聚乙烯醇的研究  

Study on modification of poly(vinyl alcohol)by azobenzene

作　　者：周建华 李巍巍[2] 徐冬梅[2] 

机构地区：[1]中科纳米涂料技术(苏州)有限公司,江苏苏州215024 [2]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《化工科技》2013年第3期5-8,共4页Science & Technology in Chemical Industry

基　　金：国家自然科学基金项目(21074085)

摘　　要：通过三聚氯氰的氯原子和聚乙烯醇的羟基之间脱氯化氢的反应,用含有2个偶氮苯的三聚氯氰衍生物改性聚乙烯醇(PVA)1788。红外光谱和核磁共振分析表明,在二氧六环和水混合溶剂中可以将偶氮苯成功接枝到PVA上,PVA中约每12个羟基就有1个发生反应。含有偶氮苯的PVA可以溶解在水和二甲亚砜中。其紫外可见吸收光谱与偶氮苯相似,并表现出偶氮苯的典型光致异构现象。Poly（vinyl alcohol）1788（PVA）was modified by a cyanuric chloride derivative containing two azobenzene groups through dehydrochlorination reaction between the chlorine atom and the hydroxyl.Infrared spectra and 1 H-nmR analysis indicated that azobenzene moiety could be successfully grafted to PVA in the mixture of 1,4-dioxane and deionized water,and about one-twelfth of the hydroxyls in PVA participated in the reaction.The azobenzene-modified PVA can be dissolved in dimethyl sulphoxide and deionized water.Its UV-vis absorption spectrum is similar to that of azobenzene and exhibits typical reversible photoisomerization behaviors.

关 键 词：聚乙烯醇 偶氮苯 三聚氯氰 紫外可见吸收 光致异构 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]