摘要
研究了外加磁场、超声和微波辐射等物理场对壳聚糖-亚铁离子配合反应速率和配合量的影响.结果表明:超声波对壳聚糖与亚铁离子配合反应的反应速率及配合能力的强化作用最明显;磁场处理和微波辐射对该反应也有一定的促进作用;各外加物理场的强化作用存在一个阈值.通过对产物的紫外、红外光谱分析,发现电磁场基本上没有改变反应产物——壳聚糖-亚铁离子配合物的化学结构.文中还对外加物理场的作用机理进行了理论探讨.
The effects of several extrinsic physical fields, such as the magnetic field, the ultrasonic wave and the microwave irradiation, on the rate and yield of chitosan-Fe（ Ⅱ ） complexing reaction were investigated. The results show that ultrasonic has the greatest effect on the reaction rate and complexing capacity, followed by the magnetic field and the microwave irradiation, and that there is a threshold for the enhancement by the physical fields. UV and IR spectra show that the structure of chitosan-Fe（ Ⅱ ） complex treated with magnetic field is almost the same as that of the control. The authors also propose the enhancement mechanisms of the complexing reaction by the three physical fields in the end.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第7期62-66,71,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
高等学校博士学科点专项科研基金资助项目(20050561014)
关键词
壳聚糖
亚铁离子
配合反应
磁场
超声
微波辐射
chitosan
Fe（ Ⅱ ）
complexing reaction
magnetic field
ultrasonic
microwave irradiation
