壳聚糖Schiff碱的制备及其对金属离子吸附性能研究  

Preparation of Modified Chitosan and Its Adsorption Research of Metal Ions

作　　者：涂钰娟 周莉[1] 张思嘉[1] 梁龙妹 王泽巩 张斯诺 Tu Yujuan Zhou Li Zhang Sijia Liang Longmei Wang Zegong Zhang Sinuo(College of Chemistry and Environmental Engineering Shenzhen University, Shenzhen 518060, China)

机构地区：[1]深圳大学化学与环境工程学院,广东深圳518060

出　　处：《广东化工》2016年第22期11-13,27,共4页Guangdong Chemical Industry

基　　金：深圳市战略性新兴产业发展专项资金资助项目(JSGG20120614164013545)

摘　　要：文章采用微波辐射技术制备戊二醛交联壳聚糖水杨醛Schiff碱,探究其对铜离子的吸附性能。通过红外光谱仪,热分析仪和扫描电子显微镜对其结构及性能进行一系列表征,同时通过正交实验法考察其反应温度、时间、吸附动力学等影响因素对交联产物吸附性能的影响。扫描电镜分析表明交联改性后壳聚糖的表面明显发生变化,比壳聚糖更加松散,在吸附完成后改性壳聚糖的表面变得严密。由分析热失重可知改性壳聚糖热分解反应是258℃。由吸附动力学曲线可以得出改性壳聚糖对铜离子的吸附符合二级吸附动力学方程。Glutaraldehyde crosslinking salicylicaldehyde-chitosan Schiff is preparatedbythe microwave radiation, in order to explore its adsorption of metal ions Through the infrared spectrometer, thermal analyzer and scanning electron microscope, its structure can be characterized, and the influence factors such as reaction temperature, time, and the adsorption dynamics of crosslinking absorption performance can be surveied under the condition of the orthogonal experiment method. SEM analysis indicates that the Glutaraldehyde crosslinked salicylaldehyde-chitosan Schiff significantly changed, more loosely than chitosan. The surface modification of chitosan becomes tight after adsorption. TGA analysis indicates that the thermal decomposition temperature of Glutaraldehyde crosslinked salicylaldehyde -chitosan Schiff is 258 ℃. At the same time, the Glutaraldehyde crosslinked salicylaldehyde-chitosan Schiff＇s adsorption for Cu2＋ suits for pseudo-second-order adsorption kinetics.

关 键 词：微波辐射法 改性壳聚糖 高分子吸附剂 吸附性能 

分 类 号：O625.632[理学—有机化学]