Correlation of binary polyolefin phase behavior with statistical segment length asymmetry
Correlation of binary polyolefin phase behavior with statistical segment length asymmetry
复制标题
二元聚烯烃相行为与统计链段长度不对称性的相关性
DOI：
10.1021/ma00046a070
复制
发表时间：
1992
期刊：
影响因子：
5.5
通讯作者：
K. Almdal
中科院分区：
文献类型：
--
作者：
F. Bates;Mark F. Schulz;J. Rosedale;K. Almdal
研究了聚乙烯、聚乙烯、聚乙烯和乙烯-乙烯共聚四对聚烯烃的链段-链段相互作用参数χ随温度的变化规律。这些结果是传统的Flory-Huggins混合热没有预料到的。然而，χ的大小与统计的节段长度不对称性之间建立了关联。这种对χ的贡献归因于聚合物构象尺寸的不匹配，为了获得均匀的混合物，必须适应这种不匹配
The segment-segment interaction parameter χ is dreported as a function of temperature for four pairs of polyolefin based on polyethylene, poly(ethylenepropylene), poly(ethylethylene) and poly(ethylene-co-ethylethylene). These results are not anticipated by the traditional Flory-Huggins heat of mixing. However, a correlation between the magnitude of χ and the statistical segment length asymmetry was established. This contribution to χ is attributed to the mismatch in polymer conformational size that must be accomodated in order to achieve a homogeneous mixture