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首页> 美国卫生研究院文献>Membranes >Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process
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Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Process

机译：通过熔融工艺制备的可生物降解的聚丁烯琥珀酸酯/石墨烯纳米型纳米复合材料的屏障性质的改进

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Polybutylene Succinate (PBS)/Graphene nanoplatelets (GnP) nanocomposites over a range of GnP from 0 to 1.35 wt.%. were prepared by a melt process. A mixture of individual graphene nanosheets and aggregates was obtained by the addition of GnP in the PBS matrix. The presence of these fillers did not significantly modify the morphology, crystalline microstructure of the matrix or its thermal stability. However, a slight reinforcement effect of PBS was reported in the presence of GnP. The water sorption isotherm modelling with Guggenheim, Andersen and De Boer (GAB) equation and Zimm-Lundberg theory allowed a phenomenological analysis at the molecular scale. The presence of GnP did not modify the water sorption capacity of the PBS matrix. From a kinetic point of view, a decrease of the diffusion coefficient with the increasing GnP content was obtained and was attributed to a tortuosity effect. The influence of water activity was discussed over a range of 0.5 to 1 and 0 to 0.9 for water and dioxygen permeability. Improvement of the barrier properties by 38% and 35% for water and dioxygen permeability respectively were obtained.
机译：聚丁二酸丁二醇酯（PBS）/石墨烯纳米薄层（GNP）纳米复合材料在0至1.35重量％的GNP范围内。％。通过熔体过程制备。通过在PBS基质中加入GNP获得单个石墨烯纳米片和聚集体的混合物。这些填料的存在没有显着改变基质的形态，结晶微观结构或其热稳定性。然而，在GNP存在下报道了PBS的轻微增强效果。与古根海姆，安德森和德波尔（GAB）方程和Zimm-Lundberg理论的水吸附等温模型允许在分子尺度下进行现象学分析。 GNP的存在没有改变PBS基质的吸水能力。从动力学的角度来看，获得了随着GNP含量增加的扩散系数的降低，并归因于曲折效应。水和二氧化渗透性的0.5至1和0至0.9的范围内讨论了水活性的影响。得到屏障性的提高38％和35％的水和二氧化渗透性。

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