交联淀粉微球对苯胺的吸附行为及机制探讨  

Discussing adsorption behavior and adsorption mechanism of crosslinked starch microspheres on anilin

作　　者：赵钤妃[1] 苏秀霞[1] 李仲谨[1] 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室,陕西科技大学化学与化工学院,陕西西安710021

出　　处：《中国胶粘剂》2011年第10期1-5,共5页China Adhesives

基　　金：国家自然科学基金资助项目(50573046);陕西省教育厅产业化培育资助项目(02JC05);陕西科技大学研究生创新基金项目(SUST-B)

摘　　要：以可溶性淀粉为原料,N,N′-亚甲基双丙烯酰胺(MBAA)为交联剂,采用反相悬浮聚合法合成了CSM(交联淀粉微球)。研究了CSM对苯胺的静态吸附行为,分析了其吸附热力学和动力学特性,测定了不同温度时的吸附等温线,并探讨了吸附机制。结果表明:在研究范围内,CSM对苯胺的吸附在60 min以后达到平衡,其饱和吸附量为4.62 mmol/g,并且其吸附行为同时符合Langmuir方程和Freundlich方程;CSM对苯胺的吸附是一个自发、放热、焓推动的物理吸附为主的过程。With soluble starch as raw material, N, N＇-methylene bisacrylamide （MBAA） as cross linker, the CSM （crosslinked starch microspheres） was prepared by inverse suspension polymerization. The static adsorption behavior of CSM on aniline was investigated,and its thermodynamic and kinetic adsorption characteristics were analysed,the adsorption isotherms were mensurated at different temperatures,and the adsorption mechanism was also discussed. The results showed that within the scope of the study,the adsorption balance of CSM on aniline was achieved after 60 min,its maximum adsorption capacity was 4.62 mmol/g,and its adsorption behavior could meet equation of Langmuir and Freundlich. The adsorption of CSM on aniline is a spontaneous ,thermopositive and enthalpy-impeling process with physical adsorption as main.

关 键 词：交联淀粉微球 苯胺 吸附 动力学 热力学 焓推动 

分 类 号：TQ432.2[化学工程] TQ424.3