Relation of free volume and barrier properties in the miscible blends of poly(vinyl alcohol) and nylon 6-clay nanocomposites film
Relation of free volume and barrier properties in the miscible blends of poly(vinyl alcohol) and nylon 6-clay nanocomposites film
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聚乙烯醇和尼龙6粘土纳米复合材料薄膜的混溶共混物中自由体积和阻隔性能的关系
DOI：
10.1016/j.memsci.2008.11.027
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发表时间：
2009-02-05
影响因子：
9.5
通讯作者：
Fu, Qiang
中科院分区：
文献类型：
--
作者：
Cui, Li;Yeh, Jen-Taut;Fu, Qiang
通过熔融共混和压制制备了一系列尼龙6-粘土纳米复合材料（NYC）/聚乙烯醇（PVA）共混薄膜。 DMA 和 FT-IR 测量证实了 NYC 和 PVA 之间良好的相容性。基于微观自由体积观点，详细检查了 NYC/PVA 共混薄膜的宏观阻隔性能。通过改变PVA含量来调节汽油渗透性能和自由体积特征参数。阻隔性能与 PVA 含量之间以及自由体积参数与 PVA 含量之间存在相似性。自由体积分数与渗透系数之间的关系可以精确地描述为指数函数，这意味着微观自由体积对于确定宏观阻隔性能起着重要作用。 (C) 2008 Elsevier B.V. 保留权利。
A series of nylon 6-clay nanocomposite (NYC)/poly(vinyl alcohol) (PVA) blends films were prepared via melt compounding and pressing. The good compatibility between NYC and PVA was approved by DMA and FT-IR measurements. The macroscopic barrier properties of NYC/PVA blends films were inspected in detail, based on a microscopic free volume view of point. The gasoline permeation properties and the characterized parameters of free volume were adjusted through varying the PVA content. A similarity was found between barrier properties vs. PVA content and free volume parameters vs. PVA content. The relation between free volume fraction and permeability coefficient could be described exactly as an exponent function, implied that microscopic free volume plays an important role on determining macroscopic barrier properties. (C) 2008 Elsevier B.V. Ail rights reserved.