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首页> 外文期刊>Journal of Applied Polymer Science >Properties of mineral filled poly(lactic acid)/poly(methyl methacrylate) blend
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Properties of mineral filled poly(lactic acid)/poly(methyl methacrylate) blend

机译：矿物填充聚（乳酸）/聚（甲基丙烯酸甲酯）混合物的性质

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This study examines the influence of three different minerals, that is, clay, calcium carbonate, and quartz on the physical, thermal, and mechanical properties of poly(lactic acid) (PLA)/poly(methyl methacrylate) blend. Rheological behavior and phase structure were initially studied by small-amplitude oscillatory shear rheology. Clay- and quartz-filled materials presented an increase in viscosity at low frequency associated with the presence of a yield stress. However, this behavior was not observed for calcium carbonate filled materials due to a matrix degradation effect. To elucidate this aspect, thermal stability and thermal properties were examined by thermogravimetric analysis and differential scanning calorimetry, showing that calcium carbonate promotes degradation of the PLA phase. No nucleating effect was observed in the presence of the minerals. Dynamical mechanical analysis and mechanical characterization revealed an increase of the overall softening temperature and, a reinforcing effect for clay- and quartz-based composites. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 46927.
机译：本研究探讨了三种不同矿物质的影响，即粘土，碳酸钙和石英对聚（乳酸）/聚（甲基丙烯酸甲酯）共混物的物理，热和力学性能。最初通过小振幅振荡剪切流变学研究了流变行为和相结构。粘土和石英填充材料呈现出与屈服应力的存在相关的低频粘度的增加。然而，由于基质降解效应，碳酸钙填充材料未观察到这种行为。为了阐明这种方式，通过热重分析和差示扫描量热法检测热稳定性和热性能，显示碳酸钙促进PLA阶段的降解。在矿物质存在下没有观察到成核效果。动态机械分析和机械表征显示了整体软化温度的增加，以及粘土和石英复合材料的增强效果。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,46927。

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