Block copolymer thermoplastic elastomers with composite crystalline-glassy hard domains

John P. Bishop, Richard A. Register

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report the synthesis and behavior of thermoplastic elastomers (TPEs) containing both crystalline and glassy hard segments, with the aim of capturing the mechanical properties of conventional all-amorphous triblock TPEs, while forming the solid-state structure by crystallization from a single-phase melt. Living ring-opening metathesis polymerization and subsequent hydrogenation generate pentablock copolymers with the architecture crystalline-glassyrubbery- glassy-crystalline. Analogous crystalline-rubbery-crystalline triblocks show a high initial modulus, yielding, and poor recovery, resulting from plate-like crystalline hard blocks. In the pentablocks, crystallization from a single-phase melt causes a layer rich in the glassy block to form around the crystallites, limiting their lateral growth and generating composite hard domains. The pentablocks show the low initial modulus, strain-hardening behavior, and small permanent set desired for TPEs, while retaining an easily-processed single-phase melt.

Original languageEnglish (US)
Title of host publicationICAFPM 2011 - Proceedings of 2011 International Conference on Advanced Fibers and Polymer Materials
PublisherChemical Industry Press
Pages3-6
Number of pages4
ISBN (Print)9787122120199
StatePublished - Jan 1 2011
Event2011 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2011 - Shanghai, China
Duration: Aug 15 2011Aug 17 2011

Publication series

NameICAFPM 2011 - Proceedings of 2011 International Conference on Advanced Fibers and Polymer Materials

Other

Other2011 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2011
CountryChina
CityShanghai
Period8/15/118/17/11

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics

Keywords

  • Block copolymer
  • Hard domains
  • Thermoplastic elastomer

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  • Cite this

    Bishop, J. P., & Register, R. A. (2011). Block copolymer thermoplastic elastomers with composite crystalline-glassy hard domains. In ICAFPM 2011 - Proceedings of 2011 International Conference on Advanced Fibers and Polymer Materials (pp. 3-6). (ICAFPM 2011 - Proceedings of 2011 International Conference on Advanced Fibers and Polymer Materials). Chemical Industry Press.