Association of the Ion Pair End-Groups of Halato Telechelic Polymers in Nonpolar Solvents

Halato telechelic polymers (HTP) result from the complete ionization of both ends of telechelic prepolymers. In nonpolar solvents, they form homogeneous gels which upon dilution generally transform into more or less viscous solutions unless they display a phase separation process. Solutions of 10 g dL** minus **1 alpha , omega alkaline earth dicarboxylato polybutadiene (M OVER BAR //n equals 4, 600) in xylene exhibit an attractive thermorheological simplicity and obey a deformation mechanism controlled by the stability and the mean size of multiplets formed by the carboxylate end-groups. A secondary relaxation characteristic of these multiplets is clearly evidenced.