Viscoelastic properties of an organic hybrid of chlorinated polyethylene and a small molecule

The dynamic mechanical properties of an organic hybrid consisting of chlori nated polyethylene (CPE) and N,N-dicyclohexyl-2-benzothiazolyl sulfenamide (DZ) were investigated. All the CPE/DZ hybrids showed a single loss tangent (tan delta) peak in the mechanical spectra. The peak area under the tan de lta/temperature curves around the mechanical loss peak was examined to char acterize the damping properties of the CPE/DZ hybrids. We found that there exists a bending point in the relation between the glass-transition tempera ture (T-g) and DZ content and that the value of T-g is saturated in the hig her DZ contents, suggesting that excess DZ molecules show self-aggregation and are reorganized. (C) 2000 John Wiley & Sons, Inc.