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双氧水均相氧化降解制备水溶性壳聚糖的研究

Study on the Preparation of Water-Soluble Chitosans by H₂O₂-HAc and Characterization

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【Author】 FENG Xiao-qiang1,GUO Feng2,YANG Sheng2*,LI Hui-xue2,SU Zhong-xin1*(1.Chemistry and Chemical Engineering College,Lanzhou University,Lanzhou 730000,China;2.College of Biology and Chemistry,TianShui Univerity,Tianshui 741001,China)

【机构】兰州大学化学化工学院；天水师范学院生命科学与化学学院；兰州大学化学化工学院甘肃兰州730000；甘肃天水741001；甘肃兰州730000；

【摘要】在酸性条件下,利用H2O2在均相条件下对壳聚糖进行降解,通过控制反应时间、反应温度、反应物浓度等条件,制备一系列不同分子量(0.23×104～6.5×104)的水溶性壳聚糖,用FT-IR、TG-DTA对其降解产物进行表征,并对影响降解的主要因素及降解机理进行了讨论。更多还原

【Abstract】 A series of water soluble chitosans with different molecular weight were prepared by means of H2O2-HAc system in acidic condition through controlling reaction time,temperature and concentration of reactants,etc.The viscosity of these chitosans was measured,meanwhile,the degradation products were characterised by FT-IR,TG-DTA.The affective factors on degradation and the degradation mechanism were also discussed.更多还原