Cosquer Raphaël, Pruvost Sébastien, Gouanvé Fabrice
UMR CNRS 5223 IMP Ingénierie des Matériaux Polymères, Univ Lyon INSA Lyon, 69621 Villeurbanne, France.
UMR CNRS 5223 IMP Ingénierie des Matériaux Polymères, Univ Lyon Université Lyon 1, 69622 Villeurbanne, France.
Membranes (Basel). 2021 Feb 22;11(2):151. doi: 10.3390/membranes11020151.
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.
制备了一系列石墨烯纳米片（GnP）含量从0到1.35 wt.%的聚丁二酸丁二醇酯（PBS）/石墨烯纳米片（GnP）纳米复合材料，采用熔融法制备。通过在PBS基体中添加GnP，得到了由单个石墨烯纳米片和聚集体组成的混合物。这些填料的存在并没有显著改变基体的形态、结晶微观结构或其热稳定性。然而，据报道，在存在GnP的情况下，PBS有轻微的增强效果。用古根海姆、安德森和德布尔（GAB）方程以及齐姆-伦德伯格理论进行的水吸附等温线建模，允许在分子尺度上进行唯象分析。GnP的存在并没有改变PBS基体的吸水能力。从动力学角度来看，随着GnP含量的增加，扩散系数降低，这归因于曲折效应。在水活度范围为0.5至1以及水和氧气渗透率范围为0至0.9的情况下，讨论了水活度的影响。分别使水和氧气渗透率的阻隔性能提高了38%和35%。
