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Crystalline polymers have a fully or partially regular chain structure and the regular parts may crystallize to some extent. The crystalline stems adapt to a specific preferred conformation, the low energy conformation (cf. Chapter 2 ). The presence of chain defects, e.g. atactic sequences, chain branches or different repeating units at high concentrations, makes it impossible for a polymer to crystallize and a glassy structure is formed on cooling.

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Morphology of Semicrystalline Polymers: Concepts, Analytical methods and Structure-Property Relationships

  • 章节

  • 发表日期：

    2025年

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  • Ulf W. Gedde,
  • Mikael S. Hedenqvist,
  • Mats Johansson,
  • Lars Berglund,
  • Jakob Wohlert

摘要

Crystalline polymers have a fully or partially regular chain structure and the regular parts may crystallize to some extent. The crystalline stems adapt to a specific preferred conformation, the low energy conformation (cf. Chapter 2 ). The presence of chain defects, e.g. atactic sequences, chain branches or different repeating units at high concentrations, makes it impossible for a polymer to crystallize and a glassy structure is formed on cooling.