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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (22): 2356-2362. 上一篇    下一篇

研究论文

界面作用对PMMA/MCM-41/OMMT复合材料性能的影响

王娜1,2*，苗頔1，李洪伟1，方庆红1,2，陈尔凡1,2   

  1. (1沈阳化工大学材料科学与工程学院 沈阳 110142 )
    (2辽宁省高校高分子材料应用技术重点实验室 沈阳化工大学 沈阳 110142)
  • 投稿日期:2010-04-19 修回日期:2010-06-20 发布日期:2010-07-25
  • 通讯作者: 王娜 E-mail:iamwangna@sina.com

Effect of Interfacial Interaction on the Properties of PMMA/MCM-41/OMMT

Wang Na*,1,2 Miao Di1 Li Hongwei1 Fang Qinghong1,2 Chen Erfan1,2   

  1. (1School of Material Science/Engineering, Shenyang University of Chemical Technology, Shenyang 110142)
    (2 Education Department of LiaoNing Province, Key Laboratory of Applied Technology of Polymer Materials, Shenyang University of Chemical Technology, Shenyang 110142)
  • Received:2010-04-19 Revised:2010-06-20 Published:2010-07-25

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1084

被引次数

17

通过单体插层原位本体聚合的方法, 制备了多种不同含量的聚甲基丙烯酸甲酯(PMMA)/蒙脱土/介孔分子筛(无模板剂)复合材料. 研究了不同结构填料与基体间的界面作用, 以及不同结构填料的比例变化对复合材料性能的影响. 研究结果表明: 有机蒙脱土(OMMT)与介孔分子筛MCM-41(无模板剂)共同作为填料, 与基体发生较强的界面效应, 形成新型网络复合结构, 两种粒子起到了协同增强作用|当有机蒙脱土(OMMT)/介孔分子筛(MCM-41)混合填料(比例为1∶1)含量为0.5%时, PMMA基纳米复合材料的拉伸强度达到最大值49.0 MPa, 比PMMA提高了15%|同时添加OMMT和MCM-41的PMMA基纳米复合材料的热稳定性高于单独添加OMMT或MCM-41的PMMA基复合材料.

关键词: PMMA, 有机蒙脱土, 介孔分子筛MCM-41, 界面作用, 纳米复合材料

Polymethylmethacrylate (PMMA)/organic montmorillonite (OMMT), PMMA/MCM-41 (without template), PMMA/OMMT/MCM-41 (without template) composites were prepared by in situ polymerization. The interfacial interaction between fillers and PMMA matrix and the effect of mechanical properties and thermal stability of PMMA composite were investigated. It was demonstrated that when OMMT/MCM-41 mixture was used as filler, novel nano-network structure was formed between the matrix and the filler. Synergistic reinforcing effect was obtained due to the strong interfacial interaction between the matrix and the filler. When the amount of OMMT/MCM-41 mixture [w(OMMT)∶w(MCM-41)＝1∶1] was 0.5%, tensile strength of the nano-composite approached maximum values of 49.0 MPa, increased by 15%. Effect of adding different kinds of fillers on thermal properties of the nano-composites were also studied. Thermal stability of the nano-composite was higher by adding OMMT/MCM-41 mixture than that of composite by only adding either OMMT or MCM-41.

Key words: PMMA, OMMT, MCM-41, interfacial interaction, nano-composite