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微悬浮法制备多孔聚苯乙烯磁性微球(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年06期
Page:
107-110
Column:
研究论文
publishdate:
2013-11-27

Article Info:/Info

Title:
Preparation of magnetic porous PS microspheres by microsuspension
Article ID:
1000-2006(2013)06-0107-04
Author(s):
XU Peng1SU Tianxiang1CAO Xiaoyong2GAO Qinwei1ZHANG Rui1*
1.College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China;
2.Nanjing Institute of Supervision & Testing on Product Quality, Nanjing 210028, China
Keywords:
microsuspension polymerization Fe3O4 magnetic nanoparticles porous polystyrene magnetic microspheres
Classification number :
TB383
DOI:
10.3969/j.issn.1000-2006.2013.06.021
Document Code:
A
Abstract:
Dispersed Fe3O4 nanoparticles were modified by vinyl triethoxy silane(SG-151), to prepare Fe3O4/polystyrene porous crosslinked composite particles by microsuspension polymerization. In the reaction system, the magnetic porous PS microspheres were prepared by using benzoyl peroxide(BPO)as an initiator, divinyl benzene(DVB)as crosslinking agent, sodium dodecyl sulfate(SDS)and polyvinyl pyrrolidone(PVP)as stabilizers, toluene and heptane as pore-forming agents. The morphology and composition of the obtained porous microspheres were characterized with scanning electron microscope(SEM), transmission electron microscopy(TEM), and thermo gravimetric analysis(TGA). It was found that the Fe3O4/PS porous microspheres have regular spherical structures with a size distribution from 4 μm to 10 μm, the porous composted spheres also showed good magnetic response in magnetic field.

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Last Update: 2013-11-30