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首页> 外文期刊>Journal of Applied Polymer Science >On the use of ball milling to develop poly( 3-hydroxybutyrate-co-3-hydroxyvalerate)-graphene nanocomposites (II)-Mechanical, barrier, and electrical properties
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On the use of ball milling to develop poly( 3-hydroxybutyrate-co-3-hydroxyvalerate)-graphene nanocomposites (II)-Mechanical, barrier, and electrical properties

机译：关于使用球磨开发聚（3-羟基丁酸酯-co-3-羟基戊酸酯）-石墨烯纳米复合材料（II）-机械性能，阻隔性能和电性能

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摘要

In this work, poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanocomposites containing functionalized graphene sheets (FGS) were prepared by means of high-energy ball milling. The crystalline structure, oxygen barrier, mechanical and electrical properties, and biodegradability of the developed nanocomposites were analyzed and correlated with the amount of FGS incorporated and with their morphology, which was reported in a previous study. Addition of FGS into the PHBV matrix did not affect the crystal morphology of the material but led to somewhat enhanced crystallinity. The good dispersion and distribution of the nanofiller within the polymeric matrix, revealed in the first part of this study, was thought to be crucial for the mechanical reinforcing effect of FGS and also resulted in enhanced gas barrier properties at high relative humidity. Additionally, the conducting behavior of the nanocomposites, as interpreted by the percolation theory, displayed a very low percolation threshold set at approximate to 0.3 vol % of FGS, while the materials exhibited an overall significantly enhanced conductivity. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42217.
机译：在这项工作中，通过高能球磨制备了含有功能化石墨烯片（FGS）的聚（3-羟基丁酸酯-共-3-羟基戊酸酯）（PHBV）纳米复合材料。分析了已开发的纳米复合材料的晶体结构，氧阻隔性，机械和电性能以及生物降解性，并将其与掺入的FGS的量及其形态相关联，这在先前的研究中已有报道。将FGS加入PHBV基质中不会影响材料的晶体形态，但会导致结晶度有所提高。在这项研究的第一部分中揭示了纳米填料在聚合物基质中的良好分散和分布，这对于FGS的机械增强作用至关重要，并且还导致了在高相对湿度下增强的阻气性。另外，如通过渗流理论所解释的，纳米复合材料的导电行为表现出非常低的渗流阈值，其设定为大约FGS的0.3体积％，而材料表现出总体上显着增强的电导率。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42217。

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