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首页> 外文期刊>Journal of Applied Polymer Science >Gas permeability and mechanical properties of polystyrene-polypropylene blends
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Gas permeability and mechanical properties of polystyrene-polypropylene blends

机译：聚苯乙烯-聚丙烯共混物的透气性和机械性能

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摘要

Permeability to water vapor and oxygen, elastic modulus, tensile strength, and impact strength of polystyrene-polypropylene and high-impact polystyrene-polypropylene blends were determined as functions of blend composition and morphology. Three types of styrene-butadiene block copolymers were tested as compatibilizers and found to improve mechanical properties of blends. The experimental data on permeability and modulus were compared with the predictions for the studied binary and ternary blends. The predictive scheme employs a two-parameter equivalent box model and the data on phase continuity of constituents calculated using general equations derived from percolation theory. Blends with decreased permeability and plausible mechanical properties were proposed with regard to intended applications in food packaging. (C) 1998 John Wiley & Sons, Inc. [References: 31]
机译：确定了水蒸气和氧气的渗透性，聚苯乙烯-聚丙烯和高抗冲聚苯乙烯-聚丙烯共混物的弹性模量，拉伸强度和冲击强度，作为共混物组成和形态的函数。测试了三种类型的苯乙烯-丁二烯嵌段共聚物作为增容剂，发现它们可以改善共混物的机械性能。将渗透率和模量的实验数据与所研究的二元和三元混合物的预测值进行了比较。该预测方案采用两参数等效盒模型，并使用从渗流理论推导的通用方程式计算出成分的相连续性数据。对于食品包装中的预期应用，提出了具有降低的渗透性和合理的机械性能的共混物。 （C）1998 John Wiley＆Sons，Inc. [参考：31]

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