| Fe_3O_4/P(St/ACPA)磁性高分子纳米球的制备与磁性能研究 |
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| 引用本文： | 梁济元,翟敏. Fe_3O_4/P(St/ACPA)磁性高分子纳米球的制备与磁性能研究[J]. 合成技术及应用, 2010, 25(4): 23-26,36 |
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| 作者姓名： | 梁济元 翟敏 |
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| 作者单位： | [1]中国石化仪征化纤股份有限公司技术中心,江苏仪征211900 [2]南京理工大学化工学院,江苏南京210094 |
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| 摘 要： | 采用化学共沉淀方法制备Fe_3O_4磁性粒子,并使用油酸和十一烯酸对其进行表面改性,然后采用一步细乳液聚合法制备含有羧基官能团的Fe_3O_4/P(St/ACPA)磁性高分子纳米球,对磁流体和磁性高分子纳米球进行性能表征。结果表明,改性的Fe_3O_4磁流体分散性好,粒径均一,在室温下呈超顺磁性,磁含量为68.5%(w),饱和磁化强度为51.3emu/g;Fe_3O_4/P(St/ACPA)磁性高分子纳米球成球性好,粒径为70 nm,磁含量为39%(w),饱和磁化强度为27.9 emu/g。
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| 关 键 词： | Fe_3O_4磁流体 磁性纳米微球 细乳液聚合法 磁性能 |
Study on preparation and magnetic performance of Fe3O4/P(St/ACPA)magnetic nanospheres |
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| Liang Jiyuan,Zhai Min. Study on preparation and magnetic performance of Fe3O4/P(St/ACPA)magnetic nanospheres[J]. Synthetic Technology and Application, 2010, 25(4): 23-26,36 |
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| Authors: | Liang Jiyuan Zhai Min |
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| Affiliation: | 1.Technical Center of Sinopec YiZheng Chemical Fibre Company Limted,Yizheng Jiangsu 211900,China; 2.School of Chemical and Engineering;Nanjing University of Science ＆ Technology,Nanjing Jiangsu 210094,China) |
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| Abstract: | The Fe3O4 nanoparticles were prepared by co-precipitation in the presence of oleic acid/undecylenic acid,and magnetic Fe3O4/P（St/ACPA） nanospheres with carboxyl groups were prepared by a one-step miniemulsion polymerization.The properties of the Fe_3O_4 nanoparticles and magnetic nanospheres were characterized by TEM,FTIR,XRD,TG,VSM.The results shown that Fe_3O_4 nanoparticles modified by oleic acid/undecylenic acid had better dispersibility,smaller and uniform particle size,which also had high magnetite content（68.5%（w）） and saturation magnetization reached 51.3 emu/g.Magnetic Fe3O4/P（St/ACPA） nanospheres with carboxyl groups had good dispersibility,small particle size（70 nm）,high magnetite content（39%（w） ） and saturation magnetization （27.9 emu/g）. |
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| Keywords: | Fe3O4 magnetic fluids magnetic nanospheres miniemulsion polymerization magnetic performance |
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