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Synthesis and antimicrobial activity of quaternized O-carboxymethyl chitosan assisted with ultrasonic irradiation  
Synthesis and antimicrobial activity of quaternized O-carboxymethyl chitosan assisted with ultrasonic irradiation
资料类型: PDF文件
关键词: o-carboxymethyl  chitosan  quaternization  ultrasonic  irradiation  antimicrobial  activity  
资料大小: 1004K
所属学科: 分子表征
来源: ICAFPM 2011先进纤维与聚合物材料国际学术会议(2011.8.15~17,上海)
简介:
O-carboxymethylchitosan(OCMC)wassynthesizedbyultrasonicirradiationwithchitosanandchloroaceticacidinNaOH-ethanol.Thedegreeofsubstitution(DS)ofcarboxymethylandaminoretainedamount(NH2%)werestudiedundertheorthogonalexperimentsoffourfactorsatthreedifferentlevelsandthereactionconditionwasoptimized.ThenquaternaryammoniumgroupwasintroducedbythereactionofpreferableOCMCwithglycidyltrimethylammonium(GTA)inethanol.TheDSofthequaternizationgroupwasstudied.AntimicrobialactivitiesofquaternizedO-carboxymethylchitosan(QOCMC)wereevaluatedagainstEscherichiacoliandStaphylococcusaureus.ThestructuresofthederivativeswerecharacterizedbytheFTIRspectrometer.ExperimentresultsvalidatedthatQOCMCisbetterthanOCMCinthepropertiesofantimicrobialactivity.
作者: WANG Chen, LI Yalin, ZHAO Hang
上传时间: 2011-09-26 14:50:23
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