Dynamic properties of an organic hybrid of chlorinated polyethylene and hindered phenol compound

The dynamic mechanical properties of hybrids of chlorinated polyethylene (C PE) and 3,9-bis[1,1-dimethyl-2[beta-(3-tert-butyl-4-hydxoxy-5-methylphenyl) propionyloxy}ethyl] -2,4,8,10-tetraoxaspiro[5,5]-undecane (AO-80) were inve stigated. The CPE/AO-80 hybrids showed a novel relaxation in addition to th e glass transition of CPE. The novel relaxation is attributed to the dissoc iation of intermolecular hydrogen bonds within the AO-80-rich domain. The P ayne effect, that is, the decrease of the storage modulus E ' with increasi ng strain amplitude and the appearance of a loss modulus E " maximum at a s train of 0.6%, was observed for the CPE/AO-80 hybrids. This result demonstr ates that the AO-80-rich domains within matrix polymer CPE form a network. The Payne effect is considered to be attributed to the mechanical disruptio n of segment-segment contacts at a sufficiently great strain. (C) 2001 John Wiley & Sons, Inc.