Dynamic Mechanical Properties of Polyhexene-1

Publisher Website
Google Scholar
Abstract
A double electromagnetic transducer has been used to evaluate the complex shear modulus of polyhexene‐1 from +70°C to −27.5°C in the 25 to 2500 cps frequency range. Real and imaginary components of the complex shear modulus as well as the mechanical loss tangent are reported over nine decades of reduced frequency. The temperature dependence of mechanical properties is discussed in terms of polymer‐free volume and the glass transition temperature of −55°C. The shape of the relaxation distribution function in the transition region is similar to that of polyisobutylene. In the rubbery region the distribution function obtained from dynamic shear moduli compares favorably with that determined from stress relaxation measurements.