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Related Concept Videos

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Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
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Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
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Microfluidic Preparation of Liquid Crystalline Elastomer Actuators
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Flow induced crystallisation of polymers.

Gaetano Lamberti1

  • 1Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, n. 132, Fisciano, SA, Italy. glamberti@unisa.it.

Chemical Society Reviews
|November 9, 2013
PubMed
Summary
This summary is machine-generated.

This review covers polymer crystallization, focusing on how fluid flow impacts this process during manufacturing. Understanding flow-induced crystallization is key for optimizing polymer properties and production.

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Area of Science:

  • Polymer Science
  • Materials Science
  • Chemical Engineering

Background:

  • Polymer crystallization is crucial for determining material properties.
  • Processing conditions significantly influence crystallization behavior.
  • Flow-induced crystallization (FIC) is a complex phenomenon understudied in polymer processing.

Purpose of the Study:

  • To review current research on polymer crystallization under processing conditions.
  • To emphasize the effects of fluid flow on polymer crystallization.
  • To provide a comprehensive overview of flow-induced crystallization.

Main Methods:

  • Literature review of experimental techniques for studying polymer crystallization.
  • Summary of methods to investigate and quantify crystallization.
  • Overview of modeling approaches for polymer crystallization and FIC.

Main Results:

  • Identified key factors influencing polymer crystallization.
  • Described experimental techniques used to study FIC.
  • Reported main findings on flow effects on polymer crystallization.

Conclusions:

  • Polymer crystallization is highly sensitive to processing conditions, especially fluid flow.
  • Flow-induced crystallization significantly alters polymer morphology and properties.
  • Further research and modeling are needed to fully understand and control FIC.