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Anhydride Cured Bio‐Based Epoxy Resin: Effect of Moisture on Thermal and Mechanical Properties
Author(s) -
Anusic Andrea,
ReschFauster Katharina,
Mahendran Arunjunai Raj,
Wuzella Günter
Publication year - 2019
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201900031
Subject(s) - thermosetting polymer , materials science , epoxy , curing (chemistry) , petrochemical , composite material , moisture , absorption of water , organic chemistry , chemistry
Abstract This paper describes the development of a novel thermoset based on epoxidized hemp seed oil. The optimization of the hardener (anhydride) and crosslinking accelerator (2‐ethylimidazol) concentration as well as the curing parameters are discussed in detail. The optimized material exhibits a bio‐based carbon portion of 57.5 wt% and represents an innovative and sustainable substitute for fully petrochemical‐based resins in terms of thermal and mechanical performance characteristics. However, also a major challenge with regard to practical applications of (bio‐based) thermosets with anhydride curing agent thermosets is identified and addressed: the sensitivity to moisture absorption both during curing and in the fully cured state.