Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization

›› 2012, Vol. 20 ›› Issue (1): 95-104.

Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization

李鹏飞, 杨良嵘, 何秀琼, 王娟, 孔鹏, 邢慧芳, 刘会洲

Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2011-08-16 修回日期:2011-10-10 出版日期:2012-02-28 发布日期:2012-05-03
通讯作者: YANG Liangrong,E-mail:lryang@home.ipe.ac.cn;HE Xiuqiong,E-mail:hzliu@home.ipe.ac.cn
基金资助:
Supported by the National Natural Science Foundation of China (21106162);the National Key Natural Science Foundation of China (21136009);the National High Technology Research and Development Program of China (2009CB219904);the State Key Laboratory of Chemical Engineering (SKL-ChE-11A04)

Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization

LI Pengfei, YANG Liangrong, HE Xiuqiong, WANG Juan, KONG Peng, XING Huifang, LIU Huizhou

Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received:2011-08-16 Revised:2011-10-10 Online:2012-02-28 Published:2012-05-03
Supported by:
Supported by the National Natural Science Foundation of China (21106162);the National Key Natural Science Foundation of China (21136009);the National High Technology Research and Development Program of China (2009CB219904);the State Key Laboratory of Chemical Engineering (SKL-ChE-11A04)

摘要/Abstract

摘要： A novel polyglycidylmethacrylate(PGMA) microspheres with high adsorption capacity of Cr(VI) was prepared by cerium(IV) initiated graft polymerization of tentacle-type polymer chains with amino group on polymer microspheres with hydroxyl groups.The micron-sized PGMA microspheres were prepared by a dispersion polym-erization method and subsequently modified by ring-opening reaction to introduce functional hydroxyl groups.The polymer microspheres were characterized by scanning electron microscopy(SEM) and Fourier transform infrared spectroscopy(FTIR).The results indicated that the polymer microspheres had an average diameter of 5 μm with uniform size distribution.The free amino group content was determined to be 5.13 mmol·g^-1 for g-PGMA-NH₂ mi-crospheres by potentiometric and conductometric titration methods.The Cr(VI) adsorption results indicated that the graft polymerization of tentacle-type polymer chains on the polymer microspheres could produce adsorbents with high adsorption capacity(500 mg·g^-1).The polymer microspheres with grafted tentacle polymer chains have potential application in large-scale removal of Cr(VI) in aqueous solution.

关键词: microsphere, PGMA, amino group, high-capacity, Cr(VI), Ce(IV)-initiated graft polymer

Abstract: A novel polyglycidylmethacrylate(PGMA) microspheres with high adsorption capacity of Cr(VI) was prepared by cerium(IV) initiated graft polymerization of tentacle-type polymer chains with amino group on polymer microspheres with hydroxyl groups.The micron-sized PGMA microspheres were prepared by a dispersion polym-erization method and subsequently modified by ring-opening reaction to introduce functional hydroxyl groups.The polymer microspheres were characterized by scanning electron microscopy(SEM) and Fourier transform infrared spectroscopy(FTIR).The results indicated that the polymer microspheres had an average diameter of 5 μm with uniform size distribution.The free amino group content was determined to be 5.13 mmol·g^-1 for g-PGMA-NH₂ mi-crospheres by potentiometric and conductometric titration methods.The Cr(VI) adsorption results indicated that the graft polymerization of tentacle-type polymer chains on the polymer microspheres could produce adsorbents with high adsorption capacity(500 mg·g^-1).The polymer microspheres with grafted tentacle polymer chains have potential application in large-scale removal of Cr(VI) in aqueous solution.

Key words: microsphere, PGMA, amino group, high-capacity, Cr(VI), Ce(IV)-initiated graft polymer

中图分类号:

X703

李鹏飞, 杨良嵘, 何秀琼, 王娟, 孔鹏, 邢慧芳, 刘会洲. Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization[J]. , 2012, 20(1): 95-104.

LI Pengfei, YANG Liangrong, HE Xiuqiong, WANG Juan, KONG Peng, XING Huifang, LIU Huizhou. Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization[J]. , 2012, 20(1): 95-104.

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Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization

Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization

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