摘要
以丙烯酰氯为桥连剂,采用聚乙烯亚胺(PEI)对交联壳聚糖微球(GCS)进行表面接枝改性,制备了聚乙烯亚胺改性交联壳聚糖微球(PEI-GCS)。采用傅里叶变换红外光谱和X射线光电子能谱对PEI-GCS的结构、扫描电子显微镜对PEI-GCS的形貌进行了表征,并系统考察了PEI-GCS对甲基橙(MO)的吸附性能。结果表明,PEI成功引入到GCS中,制备的PEI-GCS的外观形貌为均匀的球形。在p H为3. 00时,PEI-GCS对MO具有最佳的吸附性能,吸附容量为622. 27 mg/g,吸附动力学符合二级动力学,等温吸附模型均可采用Langmuir和Freundlich等温吸附模型来描述。
Using acryloyl chloride as bridging agent, PEI-GCS was prepared by the surface grafting modification of crosslinked chitosan miea＇ospheres （GCS） with poly （ethylenimine） （PEI）. The structure of PEi-GCS was characterized by FT-IR and XPS and the morphology of PEI-GCS was characterized by SEM. The adsorption performance of PEI-GC~ to methyl orange was studied systematically. Results show that PEI-GCS has the best adsorption performance at pH 3.00 and the adsorption capacity is up to 622.27 mg/g. The kinetics and isothermal adsorption model studies suggest that this adsorption kineiics is pseudo-second-order, which is fit to Langmuir and Freundlich isothermal adsorption model.
作者
冯宗财
赵世鹏
袁爽
宋秀美
梁楚欣
刘芳
Zongcai Feng1, Shipeng Zhao1＇2, Shuang Yuanl＇2, Xiumei SongI, Chuxin LiangI, Fang Liu2(1 . School of Chemistry and Chemical Engineering, Development Center for New Materials Engineering ＆ Technology in Universities of Guangdong , Lingnan Normal University, Zhanjiang 524048, China ; 2. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2018年第9期83-88,95,共7页
Polymer Materials Science & Engineering
基金
广东省自然科学基金资助项目(S2011010001544)
高分子材料工程国家重点实验室开放课题(KF201208)
国家星火计划项目(2012GA780015)
湛江市科技计划项目(2015A02008)
关键词
聚乙烯亚胺
壳聚糖微球
制备
甲基橙
吸附
poly（ethylenimine）
chitosan microsphere
preparation
methyl orange
adsorption
