Fe<sub>3</sub>O<sub>4</sub>/PNIPAM纳米复合微球的制备研究

材料研究学报, 2012, 26(1): 26-30.

Fe₃O₄/PNIPAM纳米复合微球的制备研究

1.1.华侨大学材料科学与工程学院厦门 3610212.莆田学院环境与生命科学系莆田 351100>

1.1.College of Materials Science and Engineering, Huaqiao University, Xiamen 3610212.Department of Environment and Life Science, Putian University, Putian 351100>

基金项目: 福建省自然科学基金2009J05131和莆田市科技计划2009G25资助项目。

关键词：复合材料 , poly (N-isopropylacrylamide) , nano-scale composite-microspheres , diameter , magnetite content

Preparation of Fe3O4/PNIPAM Nano–scale Composite–microspheres

WEN Yuqian CAI Lifeng LIN Zhiyong QIAN Hao HAN Huiqin LIN Xianshui

Keywords： composites , 聚N-异丙基丙烯酰胺 , 纳米复合微球 , 粒径 , 磁含量

用化学共沉淀法制备Fe₃O₄磁性纳米粒子, 以N--异丙基丙烯酰胺(NIPAM)、N,N’--亚甲基双丙烯酰胺(MBA)和偶氮二异丁腈(AIBN)为原料, 用种子乳液聚合法制备了具有温敏性的Fe₃O₄/PNIPAM纳米复合微球。用红外光谱仪(FTIR)、透射电镜(TEM)、热重分析仪(TGA)及Zeta粒度仪(DTS)等手段对复合微球进行了表征, 研究了单体(NIPAM)、交联剂(MBA)、乳化剂(SDBS)用量对复合微球粒径及磁含量的影响。结果表明: Fe₃O₄/PNIPAM纳米复合微球呈球形, 具有温敏性, 反应条件对复合微球的结构和形貌有较为显著的影响, 其粒径和磁含量随着单体浓度的减少、交联剂和乳化剂用量的增加而变小。

Magnetic Fe₃O₄ nanoparticles were prepared by co-precipitation, and further encapsulated with poly(N-isopropylacrylamide) via seeded emulsion polymerization to form Fe₃O₄/PNIPAM nano-scale composite-microspheres. The microspheres were characterized by FTIR, TEM, TGA and DTS. Herewith the effects of the concentration of monomer (NIPAM), cross-linker (MBA) and emulsifier (SDBS) on the diameter, magnetic Fe₃O₄ content of the microspheres were investigated. The reaction parameters show notable influence on the structure and morphology of the microspheres, and as a result, the diameter and magnetite content of the microspheres decreased with the decrease of monomer concentration and the increase of cross-linker concentration and emulsifier concentration.

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材料期刊网

Fe3O4/PNIPAM纳米复合微球的制备研究

Preparation of Fe3O4/PNIPAM Nano–scale Composite–microspheres

参考文献

Fe₃O₄/PNIPAM纳米复合微球的制备研究