制备了蒙脱土(MMT)负载Ziegler-Natta催化剂,通过原位聚合法制备PE/MMT纳米复合材料.考察了催化剂制备过程中醇的种类、用量和MMT用量对催化剂活性和复合材料堆密度的影响.扫描电镜(SEM)分析了复合材料的颗粒形态,结果表明,聚合物颗粒呈球形且堆积紧密时材料的堆密度最高.用差示扫描量热(DSC)分析了复合材料的结晶行为,结果表明,MMT的加入可以提高材料结晶度.热重(TG)分析测试了材料的热氧化降解过程,结果表明,MMT的加入主要影响复合材料的热降解起始温度,而对热分解温度的影响很小.
参考文献
| [1] | Xi YF;Frost RL;He HP .Modification of the surfaces of Wyoming montmorillonite by the cationic surfactants alkyl trimethyl, dialkyl dimethyl, and trialkyl methyl ammonium bromides[J].Journal of Colloid and Interface Science,2007(1):150-158. |
| [2] | Choi, Y.;Shin, S.Y.A.;Soares, J.B.P. .Preparation of polyethylene/montmorillonite nanocomposites through in situ polymerization using a montmorillonite-supported nickel diimine catalyst[J].Macromolecular chemistry and physics,2010(9):1026-1034. |
| [3] | Wang Z.;Pinnavaia TJ. .Nanolayer reinforcement of elastomeric polyurethane[J].Chemistry of Materials,1998(12):3769-3771. |
| [4] | Du ZJ.;Rong JF.;Zhang W.;Jing ZH.;Li HQ. .Polyethylene/palygorskite nanocomposites with macromolecular comb structure via in situ polymerization[J].Journal of Materials Science,2003(24):4863-4868. |
| [5] | Leszczynska A;Pielichowski K .Application of thermal analysis methods for characterization of polymer/montmorillonite nanocomposites[J].Journal of thermal analysis and calorimetry,2008(3):677-687. |
| [6] | Lomakin SM;Novokshonova LA;Brevnov PN;Shchegolikhin AN .Thermal properties of polyethylene/montmorillonite nanocomposites prepared by intercalative polymerization[J].Journal of Materials Science,2008(4):1340-1353. |
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