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Malleable and Recyclable Poly(urea‐urethane) Thermosets bearing Hindered Urea Bonds
Author(s) -
Zhang Yanfeng,
Ying Hanze,
Hart Kevin R.,
Wu Yuxiao,
Hsu Aaron J.,
Coppola Anthony M.,
Kim Tae Ann,
Yang Ke,
Sottos Nancy R.,
White Scott R.,
Cheng Jianjun
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201601242
Subject(s) - thermosetting polymer , urea , materials science , curing (chemistry) , polymer science , polymer chemistry , chemical engineering , organic chemistry , composite material , chemistry , engineering
Poly(urea‐urethane) thermosets containing the 1‐ tert ‐butylethylurea (TBEU) structure feature a reversible dissociation/association process of their covalent linkages under mild conditions. Unlike conventional thermosets, TBEU‐based poly(urea‐urethane) thermosets maintain their malleability after curing. Under high temperature (100 °C) and applied pressure (300 kPa), ground TBEU thermoset powder can be remolded to bulk after 20 min.