高等学校化学学报Issue(11)：2502-2510,9.DOI:10.7503/cjcu20140646
Fe3 O4/聚苯乙烯纳米复合材料的结构与性能
Structure and Properties of Fe3 O4/Polystyrene Nanocomposites
摘要
Abstract
Oleic acid modified Fe3 O4 nanoparticles( OA-Fe3 O4 ) with uniform particle size were blended with polystyrene(PS) by solution-mixing/evaporation drying method. The resultant PS/Fe3O4 nanocomposites ex-hibited superparamagnetic property. It was found that OA-Fe3 O4 nanoparticles were well dispersed in PS ma-trix, when the content of OA-Fe3 O4 was 1%-10%( mass fraction) . Differential scanning calorimetry( DSC) analysis showed that the glass transition temperature( Tg ) of PS nanocomposites decreased with the increase of the amount of Fe3 O4 nanoparticles. According to the results from thermal gravimetric analysis ( TGA ) , the presence of OA-Fe3 O4 would significantly enhance the thermal stability of PS under air condition. Rheological analysis showed that the melt viscosity of PS nanocomposites decreased with the increase of the amount of nanoparticles(0-10%) . Furthermore, we also found that the viscosity reduction took place in the PS with bimodal distribution after adding OA-Fe3 O4 , when the average molecular weight of PS was higher than critical entanglement molecular weight of PS and the radius of nanoparticles was smaller than PS' s mean-square radius of gyration.关键词
聚苯乙烯/Fe3 O4/纳米粒子/纳米复合材料/油酸改性Fe3O4纳米粒子Key words
Polystyrene/Fe3 O4/Nanoparticles/Nanocomposite/Oleic acid modified Fe3 O4 nanoparticles分类
化学化工引用本文复制引用
张志杰,唐涛..Fe3 O4/聚苯乙烯纳米复合材料的结构与性能[J].高等学校化学学报,2014,(11):2502-2510,9.基金项目
国家自然科学基金(批准号:51233005,51073149)资助 （批准号:51233005,51073149）
