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首页> 外文期刊>Journal of Applied Polymer Science >Morphology and mechanical properties of natural rubber latex films modified by exfoliated Na-montmorillonite/polyethyleneimine-g-poly (methyl methacrylate) nanocomposites
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Morphology and mechanical properties of natural rubber latex films modified by exfoliated Na-montmorillonite/polyethyleneimine-g-poly (methyl methacrylate) nanocomposites

机译：Na-蒙脱土/聚乙烯亚胺-g-聚（甲基丙烯酸甲酯）纳米复合片改性的天然胶乳薄膜的形貌和力学性能

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摘要

Na-montmorillonite/polyethyleneimine-g-poly(methyl methacrylate) (Na-MMT/PEI-g-PMMA) nanocomposite latexes were prepared by soap-free emulsion polymerization in the aqueous suspension of Na-MMT. The exfoliated morphology of the nanocomposites was confirmed by XRD and TEM. With the aim of improving morphology and mechanical properties of natural rubber latex (NRL) films, the synthesized Na-MMT/PEI-g-PMMA nanocomposites were mixed with NRL by latex compounding technology. The results of SEM and AFM analysis showed that the surface of NRL/Na-MMT/PEI-g-PMMA film was smoother and denser than that of pristine NRL film while Na-MMT was dispersed uniformly on the fracture surface of the modified films, which suggested the good compatibility between NRL and Na-MMT/PEI-g-PMMA. The tensile strength of NRL/Na-MMT/PEI-g-PMMA films was increased greatly by 85% with 10 phr Na-MMT/PEI-g-PMMA when Na-MMT content was 3 wt % and the elongation at break also increased from 930% to 1073% at the same time. (C) 2016 Wiley Periodicals, Inc.
机译：Na-蒙脱土/聚乙烯亚胺-g-聚（甲基丙烯酸甲酯）（Na-MMT / PEI-g-PMMA）纳米复合胶乳是通过在Na-MMT的水悬浮液中进行无皂乳液聚合制备的。通过XRD和TEM证实了纳米复合材料的剥离形态。为了改善天然胶乳（NRL）薄膜的形貌和力学性能，通过胶乳复合技术将合成的Na-MMT / PEI-g-PMMA纳米复合材料与NRL混合。 SEM和AFM分析结果表明，NRL / Na-MMT / PEI-g-PMMA膜的表面比原始NRL膜更光滑，致密，而Na-MMT均匀地分散在改性膜的断裂表面，这表明NRL与Na-MMT / PEI-g-PMMA之间具有良好的兼容性。当Na-MMT含量为3 wt％时，使用10 phr Na-MMT / PEI-g-PMMA时，NRL / Na-MMT / PEI-g-PMMA膜的拉伸强度大大提高了85％，断裂伸长率也增加了同时从930％增至1073％。 （C）2016威利期刊公司

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