Solvent transport phenomenon of cellulose microfiber (CMF) reinforced poly (ethylene-co-vinyl acetate) (EVA) composites
Solvent transport phenomenon of cellulose microfiber (CMF) reinforced poly (ethylene-co-vinyl acetate) (EVA) composites
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DOI：
10.1007/s12221-013-1886-5
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发表时间：
2013-12
影响因子：
2.5
通讯作者：
A. Sonia;K. Priya Dasan
中科院分区：
文献类型：
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作者：
A. Sonia;K. Priya Dasan
制备了基于EVA和CMF的复合膜，并对其溶剂输运性进行了表征。CMF采用芙蓉蒸汽爆破技术，通过挤压加入EVA基体。以己烷、庚烷和辛烷为渗透分子，分析了复合材料的溶剂输运。从渗透剂尺寸、温度和填料用量等方面对EVA/CMF复合材料的溶剂吸收行为进行了分析。与未填充的EVA相比，复合材料的阻隔性能有所提高。这反过来又表明在复合体系中纤维-基体之间有良好的相互作用。详细评价了扩散系数、渗透系数、阿伦尼乌斯活化参数等扩散参数和焓、熵等热力学参数。运输方式被发现是菲基安式的。
Composite films based on EVA with CMF were prepared and characterized for their solvent transport nature. CMF were derived fromHibiscus sabdariffaby steam explosion technique and incorporated in the EVA matrix by extrusion. Solvent transport by the composites was analyzed using hexane, heptane and octane as penetrant molecules. The solvent uptake behavior of EVA/CMF composites is explained on the basis of the penetrant size, temperature and the filler loading. The composite had improved barrier property compared with unfilled EVA. This in turn is an indication of good fiber-matrix interaction in the composite system. Diffusion parameters such as diffusion coefficient, permeation coefficient and Arrhenius activation parameters and thermodynamic parameters such as enthalpy and entropy were evaluated in detail. The mode of transport was found to be Fickian.