聚乙二醇修饰的高分子磁性微球的合成及表征  

Synthesis and Characterization of PEG-modified Polymer Magnetic Micropheres

作　　者：姜波 官月平[1] 王靖 刘会洲[1] 

机构地区：[1]中国科学院化工冶金研究所分离科学和工程青年实验室及生化工程国家重点实验室,北京100080

出　　处：《过程工程学报》2001年第4期382-386,共5页The Chinese Journal of Process Engineering

基　　金：国家杰出青年科学基金资助项目(编号:29925617)

摘　　要：利用显微摄相、红外光谱、激光粒度分析等手段对所合成的聚乙二醇(PEG)修饰的四氧化三铁/聚乙烯醇(PVA)磁性高分子微球的形貌、结构组成、磁响应性、酸碱稳定性以及温度稳定性进行了表征. 结果表明, 所合成高分子磁性微球的粒度分布较窄,具有超顺磁性和较强的磁响应性. 微球被PEG有效功能化,在三相相转移催化和生物技术领域中具有良好的应用前景.PEG-modified Fe3O4/PVA magnetic polymer micropheres were synthesized and characterized by microphotography, laser diffraction particle analysis, FT-IR spectroscopy etc. The results indicate that the size of micropheres presents a Gaussian distribution, and PEG could be immobilized to PVA magnetic microspheres. The magnetic polymer microspheres are stable in a wide range of pH and temperature. The contents of PEG and Fe3O4were about 190 mg/g and 100 mg/g in the microspheres respectively. These properties make the microspheres promising in applications in the field of catalysis and biotechnology.

关 键 词：磁性 高分子微球 聚乙二醇修饰 聚乙烯醇 合成 表征 相转移催化剂 

分 类 号：TQ028.8[化学工程]