Preparation and characteristics of magnetic porous starch microspheres

doi:10.3969/j.issn.0438-1157.2014.z2.044

CIESC Journal ›› 2014, Vol. 65 ›› Issue (z2): 299-303.DOI: 10.3969/j.issn.0438-1157.2014.z2.044

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Preparation and characteristics of magnetic porous starch microspheres

QIAN Siriguleng¹, LÜ Yang¹, WANG Hongying¹, LI Chenghua²

1. College of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China;
2. Dalian Resources Snow Breweries Ltd. Company, Dalian 116034, Liaoning, China

Received:2014-04-09 Revised:2014-06-22 Online:2014-12-30 Published:2014-12-30
Supported by:
supported by the Foundation of Liaoning Educational Committee (2008063).

磁性多孔淀粉微球的制备及性质

钱斯日古楞¹, 吕洋¹, 王红英¹, 李承华²

1. 大连工业大学生物工程学院, 辽宁大连 116034;
2. 大连华润雪花啤酒有限公司, 辽宁大连 116034

通讯作者: 钱斯日古楞
基金资助:
辽宁省教育厅项目(2008063)。

Abstract

Abstract:

Magnetic microsphere is a composite magnetic material with rich surface functional group. Porous starch was prepared by corn starch hydrolysis using biological enzymatic method, then 10—15 μm magnetic porous starch microspheres can be obtained by mixing Fe₃O₄ magnetic fluid and porous starch by multiple shake and centrifugation. Oval or spherical magnetic microspheres with rich hydroxyl and carboxyl functional groups can be observed by SEM and FTIR. The obtained magnetic microspheres can be uniformly distributed in aqueous solution and have strong magnetic response in an external magnetic field.

Key words: magnetic microsphere, porous starch, magnetofluid, magnetic property

摘要：

磁性微球是一种具有磁响应性,表面富含官能团的复合性功能材料。用生物酶解法,将玉米淀粉水解为多孔淀粉,再将Fe₃O₄磁流体通过多次振荡、离心,填充到多孔淀粉的毛细孔径内,制备出粒径分布在10~15 μm 范围内的磁性多孔淀粉微球。通过扫描电镜(SEM)观察和傅里叶红外光谱仪测定发现,该微球呈椭圆形或球形,表面富含羟基和羧基等官能团,并可在水溶液中稳定均匀地分布。在外部磁场的作用下,具有较强的磁响应性。

关键词: 磁性微球, 多孔淀粉, 磁流体, 磁响应性

CLC Number:

Q814.2

QIAN Siriguleng, LÜ Yang, WANG Hongying, LI Chenghua. Preparation and characteristics of magnetic porous starch microspheres[J]. CIESC Journal, 2014, 65(z2): 299-303.

钱斯日古楞, 吕洋, 王红英, 李承华. 磁性多孔淀粉微球的制备及性质[J]. 化工学报, 2014, 65(z2): 299-303.

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Preparation and characteristics of magnetic porous starch microspheres

磁性多孔淀粉微球的制备及性质

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