Preparationof SiO2/(PMMA/Fe3O4) from Monolayer Linolenic Acid Modified Fe3O4 Nanoparticles via Miniemulsion Polymerization

被引：49

作者：

He, Lei ^{[2
]}

Li, Zhiyang ^{[1
,5
]}

Fu, Jing ^{[2
]}

Deng, Yan ^{[1
,3
]}

He, Nongyue ^{[1
]}

Wang, Zhifei ^{[1
]}

Wang, Hua ^{[4
]}

Shi, Zhiyang ^{[4
]}

Wang, Zunliang ^{[1
]}

机构：

[1] Southeast Univ, State Key Lab Bioelect, Nanjing 210009, Peoples R China

[2] Southeast Univ, Sch Publ Hlth, Nanjing 210009, Peoples R China

[3] Hunan Univ Technol, Hunan Key Lab Green Packaging & Applicat Biol Nan, Zhuzhou 412008, Peoples R China

[4] Jiangsu Prov Ctr Dis Control & Prevent, Nanjing 210009, Peoples R China

[5] Yangtze Univ, Coll Life Sci, Jinzhou 434025, Peoples R China

来源：

JOURNAL OF BIOMEDICAL NANOTECHNOLOGY | 2009年 / 5卷 / 05期

关键词：

Synthesis; Magnetic Silica Nanocomposites; Stober Process; PMMA/Fe3O4; Nanoparticles; Linolenic Acid; Oleic Acid; SUSPENSION POLYMERIZATION; MAGNETIC NANOPARTICLES; MICROSPHERES; SURFACE; STABILITY; DRUG;

D O I：

10.1166/jbn.2009.1065

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

SiO2/(PMMA/Fe3O4) composite particles were prepared from linolenic acid (LA) instead of oleic acid (OA) modified Fe3O4 nanoparticles by miniemulsion polymerization. LA has three unsaturated double bonds with which it can polymerizate more easily than OA. And coating Fe3O4 with polymethyl methacrylate (PMMA) polymer beforehand can prevent magnetic nanoparticles from the aggregation that usually comes from the increasing of ionic strength during the hydrolyzation of tetraeth oxysilane (TEOS) by the steric hindrance. Finally, the resulting PMMA/Fe3O4 nanoparticles were coated with silica, forming SiO2/(PMMA/Fe3O4) core-shell structure particles. The sizes of nanoparticles with core-shell structure were in the range from 300 to 600 nm. The nanoparticles were spherical particles and had consistent size. The result of magnetic measurement showed that the composite particles had superparamagnetic property.

引用

页码：596 / 601

页数：6

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