交联淀粉微球对对羟基苯甲醚的吸附行为及机理的探讨

CIESC Journal

交联淀粉微球对对羟基苯甲醚的吸附行为及机理的探讨

苏秀霞，赵钤妃，李仲谨，景洁，支娟娟

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

出版日期:2011-09-05 发布日期:2011-09-20

Adsorption behavior and mechanism of crosslinked starch microspheres for p-hydroxyanisole

SU Xiuxia，ZHAO Qianfei，LI Zhongjin，JING Jie，ZHI Juanjuan

Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry，Ministry of Education，College of Chemistry and Chemical Engineering，Shaanxi University of Science & Technology，Xi’an 710021，Shaanxi，China

Online:2011-09-05 Published:2011-09-20

摘要/Abstract

摘要：

以可溶性淀粉为原料，通过反相悬浮聚合法，合成了一种交联淀粉微球（CSM）。研究了CSM对羟基苯甲醚的吸附行为，分析了其吸附动力学特性和热力学性质，并利用扫描电子显微镜（SEM）、傅里叶红外光谱仪（FTIR）和X射线衍射仪对淀粉微球及其吸附产物进行了表征，探讨其吸附机理。结果表明：在研究范围内，CSM对对羟基苯甲醚的吸附行为同时符合Langmuir和Freundlich等温吸附方程；在不同温度下，CSM吸附对羟基苯甲醚的吸附焓变（ΔH）、吸附熵变（ΔS）、吸附自由能变（ΔG）均为负值，吸附是一个自发、放热过程。

Abstract:

The crosslinked starch microspheres（CSM）were synthesized from soluble starch by inverse suspension polymerization. The adsorption behavior of CSM for p-hydroxyanisole was investigated. The kinetics and thermodynamics characteristics were also studied. The structures of CSM before and after adsorption were characterized by particle size analyzer，scanning electron microscope，FT-IR spectroscopy and X ray diffraction（XRD），and the mechanism of adsorption was also discussed. Within the framework of the study，the adsorption characteristics of CSM for p-hydroxyanisole obeyed the Langmiur and Freundlich adsorption isotherm equations. The enthalpy change ΔH，entropy change ΔS and free energy change ΔG for p-hydroxyanisole adsorbed by CSM were all negative at different temperatures. The adsorption was a spontaneous and exothermic process.

苏秀霞，赵钤妃，李仲谨，景洁，支娟娟. 交联淀粉微球对对羟基苯甲醚的吸附行为及机理的探讨 [J]. CIESC Journal.

SU Xiuxia，ZHAO Qianfei，LI Zhongjin，JING Jie，ZHI Juanjuan. Adsorption behavior and mechanism of crosslinked starch microspheres for p-hydroxyanisole[J]. .