Journal
REACTIVE & FUNCTIONAL POLYMERS
Volume 88, Issue -, Pages 1-7Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.reactfunctpolym.2015.01.004
Keywords
Polyurethane nanocomposites; Thermally reduced graphene (TRG); Electroactive; Shape memory behavior
Funding
- National Research Foundation of Korea through the Career Scientist Program
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A series of electroactive shape memory polyurethane (SMPU) nanocomposites were synthesized from poly(tetramethylene ether) glycol (PTMG), 4,4-methylenebis(phenyl isocyanate) (MDI) and 1,3-butandiol (1,3-BD) with the addition of various amounts of thermally reduced graphenes (TRG) which were chemically modified with ally' isocyanate (iTRG). The effects of iTRG on electroactive shape recovery behaviors as well as the conventional direct heat actuated SMPU material have been studied in terms of morphological, thermal, mechanical, electrical properties and thermomechanical cyclic behavior. It was found that significant increases in electrical conductivity and temperature were obtained high iTRG contents (>2%) to electrically actuate the nanocomposite, along with large increases in glass transition temperature (T-g) and initial modulus with a dramatic drop in elongation at break. (C) 2015 Elsevier B.V. All rights reserved.
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