文章摘要
超临界CO2中聚丙烯酸丁酯/Fe3O4复合物的制备及应用
Preparation and Properties of Magnetite Polybutyl Acrylate/Fe3O4 Composites in Supercritical Carbon Dioxide
  
DOI:10.16865/j.cnki.1000-7555.2019.0358
中文关键词: 超临界二氧化碳  沉淀聚合  聚丙烯酸丁酯/Fe3O4复合物  吸油
英文关键词: supercritical carbon dioxide  precipitation polymerization  polybutyl acrylate/Fe3O4 composites  oil absorption
基金项目:国家自然科学基金资助项目(51763020,51263020)
作者单位
吴秀娟1,2,王吉德1,曹丽琴1 1. 新疆大学 石油天然气精细化工教育部&自治区重点实验室新疆 乌鲁木齐 830046 2. 新疆轻工职业技术学院新疆 乌鲁木齐 830000 
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中文摘要:
      通过超临界二氧化碳(scCO2)沉淀聚合法制备了磁性聚丙烯酸丁酯(PBA/Fe3O4)复合物。首先经共沉淀法制备油酸(OA)改性的纳米Fe3O4颗粒,然后以丙烯酸丁酯(BA)为反应单体,偶氮二异丁腈(AIBN)为引发剂,二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,正己烷为助溶剂,在scCO2中制备了PBA/Fe3O4复合物。对复合物进行了红外光谱、透射电镜、热重分析、X射线衍射表征和磁性能测试,结果显示OA-Fe3O4与PBA复合。对磁性复合物进行吸油性能测试,当反应压力为17 MPa,改性纳米Fe3O4用量为6.7%时,反应生成的PBA/Fe3O4复合物对柴油的吸附量达7 g/g,利用磁铁可对吸油复合物进行回收,经CO2再生后可重复使用10次,复合物对柴油的吸附量仍维持在5 g/g以上。
英文摘要:
      The magnetite polybutyl acrylate(PBA)/Fe3O4 composites were prepared for absorbing oil by precipitation polymerization in supercritical carbon dioxide (scCO2). At first, the oleic acid-coated Fe3O4 nanoparticles were synthesized by chemical co-precipitation. Then the magnetite PBA/Fe3O4 composites were prepared by using the monomer BA, initiator AIBN, cross-linker EGDMA and cosolvent n-hexane. The morphology and structures of PBA/Fe3O4 composites were characterized through Fourier transform infrared spectroscopy (FT-IR), transmission scanning electron (TEM). Furthermore, their thermal stability, magnetic properties and oil absorption ability were evaluated. The results show that the PBA/Fe3O4 (6.7%) composite obtained at 17 MPa could absorb diesel oil up to 7.0 times of particles mass. In addition, the PBA/Fe3O4 composites could be recycled by using magnet. After cycling ten times, the absorption performance of the composite is remained above 5 g/g, which show an excellent reusability.
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