Supermolecular structure of poly(ethylene oxide) fractions
Supermolecular structure of poly(ethylene oxide) fractions
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聚环氧乙烷部分的超分子结构
DOI：
10.1002/pol.1982.180200812
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
L. Mandelkern
中科院分区：
文献类型：
--
作者：
R. C. Allen;L. Mandelkern
研究了聚环氧乙烷的结晶形态或超分子结构与分子量和结晶条件的关系。分子量分数，涵盖范围6 × 103至1 × 107，用于等温结晶的可达温度范围内，以及一个大的控制非等温结晶条件。从这些研究中构建的形态图，并与文献结果进行比较。以前的报道主要局限于低分子量，这限制了研究结果的推广。在目前的工作中，作为扩展的分子量范围的结果，建立了系统的发展，几个不同的，定义明确的，有组织的超分子结构，以及高度结晶，但无序的系统的条件。聚（环氧乙烷）和线性聚乙烯以前的报告的结果之间存在很大的相似性。一个普遍的所有链分子的建议。
The crystalline morphology, or supermolecular structure, of poly(ethylene oxide) has been studied as a function of molecular weight and crystallization conditions. Molecular weight fractions, covering the range 6 × 103 to 1 × 107 are used over the range of accessible temperatures for isothermal crystallization as well as for a large set of controlled nonisothermal crystallization conditions. A morphological map is constructed from these studies and compared with the literature results. Prior reports were primarily confined to low molecular weights, which restricted the generalization of the findings. In the present work, as a consequence of the extended molecular weight range, conditions are established for the systematic development of several different, well-defined, organized super-molecular structures as well as for highly crystalline but disorganized systems. Strong similarities are found between the results for poly(ethylene oxide) and previous reports for linear polyethylene. A generalization for all chain molecules is suggested.