摘要
对微波辐射与常规条件下壳聚糖的O烷基化反应进行了对比 .结果表明 ,在微波辐射条件下 ,用相转移催化剂和以NaOH水溶液作为碱性试剂和载体 ,壳聚糖与溴代烷能迅速地发生反应 ,生成相应的O烷基化产物 ,反应速度是常规法的 180多倍 ,极大地节约时间和提高效率 ,并且发现微波辐射下反应的取代度比常规法的有一定的提高 .
In the presence of aqueous sodium hydroxide and phase transfer catalyst,compared with conventional method,the reaction rate of alkylation of chitosan is accelerated more 180 times under microwave irradiation .Time is saved and efficiency is enhanced markedly.The degrees of substitution were improved.
出处
《湘潭大学自然科学学报》
CAS
CSCD
2001年第2期57-59,69,共4页
Natural Science Journal of Xiangtan University
