Fracture behavior of heat treated liquid crystalline polymers

A. Reyes-Mayer, B. Alvarado-Tenorio, A. Romo-Uribe, O. Flores, B. Campillo, M. Jaffe

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

    2 Scopus citations

    Abstract

    Thermotropic polymers are thermally treated in air at temperatures T a, where ΔT =Ta - Ts→n=40°C, and Ts→n is the solid-to-nematic transition. Samples are extruded thin films of a series of thermotropic random copolyesters termed B-N, COTBP and RD1000. The thermal treatment produces a second endotherm without changing Ts→n for B-N and RD1000. However, for COTBP Ts→n is significantly increased. Regardless of the complex thermal behavior exhibited by the thermotropes, the thermal treatment produces a significant increase in Young's modulus, more than 30% for B-N and over 100% for COTBP. The increase in mechanical modulus is correlated with a thermally-induced fiber-like morphology.

    Original languageEnglish (US)
    Title of host publicationAdvanced Structural Materials - 2012
    Pages137-142
    Number of pages6
    DOIs
    StatePublished - 2013
    Event21st International Materials Research Congress, IMRC 2012 - Cancun, Mexico
    Duration: Aug 13 2012Aug 18 2012

    Publication series

    NameMaterials Research Society Symposium Proceedings
    Volume1485
    ISSN (Print)0272-9172

    Other

    Other21st International Materials Research Congress, IMRC 2012
    CountryMexico
    CityCancun
    Period8/13/128/18/12

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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