摘要
N-alkyl chitosan was prepared by reducing a schiff base formed from chitosan and lauraldehyde,and microwave irradiation was applied to the preparation of N-alkyl chitosan.The effects of microwave power,irradiation time,amount of catalyst,and n(chitosan)/n(aldhyde) ratio on the degree of alkylation substitution of(chitosan) were studied.The modified chitosan was characterized by FTIR and EA.The substitution(degree) of the modified chitosan can reach 94% under the following reaction conditions:560 W microwave(power),3 min reaction time,reactant ratio(n(chitosan)/n(lauraldehyde)) of 1∶[KG-*3/5]2.6,and molar ratio of SDS to(lauraldehyde)(being) 0.15∶[KG-*3/5]1. Compared to(ordinary) reactions,the preparation of N-alkyl chitosan by microwave irradiation can be finished within very short reaction time.
N-alkyl chitosan was prepared by reducing a schiff base formed from chitosan and lauraldehyde, and microwave irradiation was applied to the preparation of N-alkyl chitosan. The effects of microwave power, irradiation time, amount of catalyst, and n（ chitosan）/n（aldhyde） ratio on the degree of alkylation substitution of chitosan were studied. The modified chitosan was characterized by FTIR and EA. The substitution degree of the modified chitosan can reach 94% under the following reaction conditions： 560 W microwave power, 3 min reaction time, reactant ratio（ n （chitosan）/n （lauraldehyde） ） of 1 ： 2. 6, and molar ratio of SDS to lauraldehyde being 0. 15：1. Compared to ordinary reactions, the preparation of N-alkyl chitosan by micro- wave irradiation can be finished within very short reaction time.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第12期1357-1359,共3页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助项目(20274013)
福建省自然科学基金资助项目(E0110027和C0310009)
福建省重大科技项目(2002I004)
关键词
壳聚糖
烷基化
微波辐射
相转移催化
chitosan, alkylation, microwave irradiation, phase transfer catalysis
