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Synthesis and properties of micron-size magnetic polymer spheres with epoxy groups
Alternative TitleChin. J. Chem. Eng.
Liu, XQ; Guan, YP; Xing, JM; Ma, ZY; Liu, HH
2003-12-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume11Issue:6Pages:731-735
AbstractMicron-size superparamagnetic poly (styrene-divinylbenzene-glycidyl methacrylate) (PSt-DVB-GMA) spheres were prepared via a modified suspension copolymerization method. Oleic acid coated magnetite (Fe3O4) nanoparticles made by co-precipitation were first mixed with monomers of St, DVB, GMA, and benzoyl peroxide (BPO) to form oil in water suspension with the presence of poly(vinyl pyrrolidone) (PVP-K30) as a stabilizer. Then the temperature of mixture was increased at a controlled rate to obtain small and relatively uniform droplets. Finally, the copolymerization reaction was initiated by the decomposition of BPO. The morphology and properties of magnetic PSt-DVB-GMA microspheres were examined by SEM, TEM, VSM, XRD and FT-IR. The magnetic microspheres obtained have very small size (about 4-7 mum) in diameter with narrow size distribution and superparamagnetic characteristics. Powder X-ray diffraction measurements show the inverse cubic spinel structure for the magnetite dispersed in polymer microspheres. FT-IR spectroscopy indicates extensive oxirane groups existed on the surface of magnetic PSt-DVB-GMA microspheres.; Micron-size superparamagnetic poly (styrene-divinylbenzene-glycidyl methacrylate) (PSt-DVB-GMA) spheres were prepared via a modified suspension copolymerization method. Oleic acid coated magnetite (Fe3O4) nanoparticles made by co-precipitation were first mixed with monomers of St, DVB, GMA, and benzoyl peroxide (BPO) to form oil in water suspension with the presence of poly(vinyl pyrrolidone) (PVP-K30) as a stabilizer. Then the temperature of mixture was increased at a controlled rate to obtain small and relatively uniform droplets. Finally, the copolymerization reaction was initiated by the decomposition of BPO. The morphology and properties of magnetic PSt-DVB-GMA microspheres were examined by SEM, TEM, VSM, XRD and FT-IR. The magnetic microspheres obtained have very small size (about 4-7 mum) in diameter with narrow size distribution and superparamagnetic characteristics. Powder X-ray diffraction measurements show the inverse cubic spinel structure for the magnetite dispersed in polymer microspheres. FT-IR spectroscopy indicates extensive oxirane groups existed on the surface of magnetic PSt-DVB-GMA microspheres.
KeywordMagnetic Microsphere Synthesis Suspension Polymerization Bioseparation
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordMICROSPHERES ; PARTICLES ; IMMOBILIZATION ; PURIFICATION ; CELLS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000187739500021
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Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5365
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Liu, XQ,Guan, YP,Xing, JM,et al. Synthesis and properties of micron-size magnetic polymer spheres with epoxy groups[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2003,11(6):731-735.
APA Liu, XQ,Guan, YP,Xing, JM,Ma, ZY,&Liu, HH.(2003).Synthesis and properties of micron-size magnetic polymer spheres with epoxy groups.CHINESE JOURNAL OF CHEMICAL ENGINEERING,11(6),731-735.
MLA Liu, XQ,et al."Synthesis and properties of micron-size magnetic polymer spheres with epoxy groups".CHINESE JOURNAL OF CHEMICAL ENGINEERING 11.6(2003):731-735.
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