| 磁场-温度双重响应性复合微球的制备与表征 |
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| 引用本文： | 艾凡荣,姚爱华,黄文旵,王德平.磁场-温度双重响应性复合微球的制备与表征[J].高等学校化学学报,2010,31(9):1701-1705. |
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| 作者姓名： | 艾凡荣 姚爱华 黄文旵 王德平 |
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| 作者单位： | 1. 同济大学材料科学与工程学院,
2. 先进土木工程材料教育部重点实验室, 上海 200092 |
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| 摘 要： | 采用部分还原共沉淀法制备了尺寸约为10 nm的Fe3O4磁性纳米粒子, 并用油酸对其进行表面改性, 通过无皂乳液聚合的方法将Fe3O4与温敏性N-异丙基丙烯酰胺-丙烯酰胺共聚物(PNIPAAm-co-Am)复合, 获得了具有磁场和温度双重响应的复合微球. 采用TEM, FTIR和XRD等方法研究了复合微球的结构与形貌, 分别采用动态激光光散射(DLS)和振动样品磁强计(VSM)表征了复合微球的温度响应性和磁场响应性. 结果表明, 所制备的Fe3O4/(PNIPAAm-co-Am)复合微球具有核壳结构, 尺寸约为100 nm, 该微球具有良好的磁响应性和温度响应性, 其最低临界溶解温度(LCST)约为40 ℃.
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| 关 键 词： | 四氧化三铁 聚异丙基丙烯酰胺 磁响应性 温度响应性 |
Preparation and Characterization of Composite Microspheres with Magnetic and Temperature Dual Stimuli-responsive Properties |
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| AI Fan-Rong,YAO Ai-Hua,HUANG Wen-Hai,WANG De-Ping.Preparation and Characterization of Composite Microspheres with Magnetic and Temperature Dual Stimuli-responsive Properties[J].Chemical Research In Chinese Universities,2010,31(9):1701-1705. |
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| Authors: | AI Fan-Rong YAO Ai-Hua HUANG Wen-Hai WANG De-Ping |
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| Institution: | 1. School of Material Science and Engineering;
2. Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Tongji University, Shanghai 200092, China |
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| Abstract: | Oleic acid-coated Fe3O4 nanoparticles were synthesized by partial reduction coprecipitation method. Magnetic and temperature dual responsive composite microspheres,consisting of superparamagnetic Fe3O4 nanopaticles and thermoresponsive poly( N-isopropylacrylamide-acrylamide) microgel,were prepared by emulsion-free copolymerization. TEM,FTIR and XRD measurements were performed to characterize the structure and morphology of the composite microspheres,vibrating sample magnetometry( VSM) and the dynamic light ... |
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| Keywords: | Fe3O4 Poly( N-isopropylacrylamide) Magnetic response Temperature response |
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