Synergism in mechanical properties via epitaxial growth in polypropylene-polyethylene blends
Synergism in mechanical properties via epitaxial growth in polypropylene-polyethylene blends
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DOI：
10.1002/pol.1985.180230822
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发表时间：
1985-08
期刊：
影响因子：
--
通讯作者：
R. M. Gohil
中科院分区：
文献类型：
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作者：
R. M. Gohil
近年来，人们越来越关注在各种实验条件下制备的聚合物共混物所表现出的性能。一些半结晶聚合物共混物在机械性能方面表现出协同作用。共混物的特定性质的增加需要基于基于纯主要组分的观察到的形态的模型来理解。对于在低浓度的次要组分（10-20%）下的这种类型的行为存在几种可能的解释。尽管进行了几次努力，但没有建立系统的标准来选择可以在机械性能方面产生协同作用的特定共混物。聚丙烯-聚乙烯共混物因其有趣的性质而闻名，并且已经进行了结晶研究以确定其典型行为。本文旨在建立一个选择有用的共混体系的标准，并提出一个可能的分子机制，可以使机械性能的协同作用。结果表明，聚合物共混物中的外延生长是可能的，并可以发挥至关重要的作用，在管理的聚合物共混物和层压板的性能。
In recent years there has been increasing interest in understanding the properties manifested by polymer blends prepared under a variety of experimental condition^.'-^ Some semicrystalline polymer blends manifest synergism in mechanical proper tie^.^-^ The increase in a particular property of a blend needs to be understood on the basis of a model based on the observed morphology of the pure major component. There exist several possible explanations for this type of'behavior at low concentrations of the minor component (10-20%). In spite of several efforts, no systematic criterion has been established for selecting a particular blend which can give synergism in mechanical properties. Polypropylene-polyethylene blends are known for their interesting properties and crystallization studies have been carried out to determine their typical behavior. 6, In this note, it is intended to establish a criterion for selecting useful blend systems and to suggest a possible molecular mechanism that can give synergism in mechanical properties. It is shown that epitaxial growth in polymer blends is possible and can play a vital role in governing the properties of polymeric blends and laminates.