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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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Shape Memory Polymers for Active Cell Culture
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Crosslinking of Semiaromatic Polyesters toward High-Temperature Shape Memory Polymers with Full Recovery.

Thomas Raidt1, Martin Schmidt1, Joerg C Tiller1

  • 1Biomaterials and Polymer Science, Department of Biochemical and Chemical Engineering, TU Dortmund, 44221, Dortmund, Germany.

Macromolecular Rapid Communications
|January 18, 2018
PubMed
Summary
This summary is machine-generated.

High-temperature shape memory polymers were created using end-group crosslinking of polyesters. These polymers show excellent shape memory performance above 200 °C, with high strain storage and recovery capabilities.

Keywords:
crosslinkingpolymer networkshape memory polymersstrain storage

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Area of Science:

  • Materials Science
  • Polymer Chemistry

Background:

  • Shape memory polymers (SMPs) are stimuli-responsive materials capable of recovering their original shape when exposed to a trigger.
  • High-temperature applications require SMPs with trigger temperatures significantly above ambient conditions.

Purpose of the Study:

  • To develop novel high-temperature shape memory polymers.
  • To investigate the shape memory performance of crosslinked semiaromatic polyesters.

Main Methods:

  • End-group crosslinking of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) semiaromatic polyesters.
  • Characterization of thermal properties and shape memory behavior.

Main Results:

  • Successfully synthesized high-temperature shape memory polymers with trigger temperatures exceeding 200 °C.
  • Achieved excellent shape memory properties, including 200% storable strain.
  • Demonstrated full strain fixity in the temporary shape and complete recovery of the permanent shape.

Conclusions:

  • End-group crosslinking is an effective strategy for creating high-performance, high-temperature shape memory polyesters.
  • The developed polymers show significant potential for demanding applications requiring thermal stability and shape recovery.