TY - JOUR
T1 - Coupling the Microscopic Healing Behaviour of Coatings to the Thermoreversible Diels-Alder Network Formation
AU - Brancart, Joost
AU - Verhelle, Robrecht René
AU - Mangialetto, Jessica
AU - Van Assche, Guy
PY - 2018/12/26
Y1 - 2018/12/26
N2 - While thermally reversible polymer network coatings based on the Diels-Alder reaction are widely studied, the mechanisms responsible for the heating-mediated healing of damage is still not well understood. The combination of microscopic evaluation techniques and fundamental insights for the thermoreversible network formation in the bulk and coating shed light on the mechanisms behind the damage healing events. The thermomechanical properties of thermoset and elastomer coatings, crosslinked by the furan-maleimide Diels-Alder cycloaddition reaction, were studied in bulk and compared to the thermal behaviour applied as coatings onto aluminium substrates. The damage sealing of thermoset (Tg = 79 °C) and elastomer (Tg = −49 °C) coatings were studied using nano-lithography and atomic force microscopy (AFM). The sealing event is studied and modelled at multiple temperatures and correlated to the changes in the network structure and corresponding thermomechanical properties.
AB - While thermally reversible polymer network coatings based on the Diels-Alder reaction are widely studied, the mechanisms responsible for the heating-mediated healing of damage is still not well understood. The combination of microscopic evaluation techniques and fundamental insights for the thermoreversible network formation in the bulk and coating shed light on the mechanisms behind the damage healing events. The thermomechanical properties of thermoset and elastomer coatings, crosslinked by the furan-maleimide Diels-Alder cycloaddition reaction, were studied in bulk and compared to the thermal behaviour applied as coatings onto aluminium substrates. The damage sealing of thermoset (Tg = 79 °C) and elastomer (Tg = −49 °C) coatings were studied using nano-lithography and atomic force microscopy (AFM). The sealing event is studied and modelled at multiple temperatures and correlated to the changes in the network structure and corresponding thermomechanical properties.
KW - Diels-Alder
KW - Dynamic covalent
KW - Modelling
KW - Reversible polymer network
KW - Self-healing
UR - http://www.scopus.com/inward/record.url?scp=85059560752&partnerID=8YFLogxK
U2 - 10.3390/coatings9010013
DO - 10.3390/coatings9010013
M3 - Article
SN - 2079-6412
VL - 9
JO - Coatings
JF - Coatings
IS - 1
M1 - 13
ER -