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Cover Image, Volume 58, Issue 12
Publication year - 2020
Publication title -
journal of polymer science
Language(s) - English
Resource type - Reports
eISSN - 2642-4169
pISSN - 2642-4150
DOI - 10.1002/pol.20200383
Subject(s) - dihedral angle , curing (chemistry) , benzene , stiffness , materials science , cover (algebra) , composite material , computer science , chemistry , mechanical engineering , engineering , organic chemistry , molecule , hydrogen bond
Ratcheting behavior of crosslinked epoxy polymers was investigated by Maenghyo Cho and his team on page 1617, considering the effects of different molecular structures of curing agents (aromatic and aliphatic) by atomistic simulations. Various ratcheting strain evolutions, local stress accumulations, and stiffness variations were observed during the cyclic deformation depending on the type of curing agents. The article concludes irreversible dihedral angle transitions near the benzene ring of the curing agent were responsible for low ratcheting resistance and stiffness degradation. (DOI: 10.1002/pol.20200130 )