Comprehensive structural study of pre-and post-heat treated compression moldedpolyurethane samples of varying composition studies by scanning probe techniques

摘要

Only a limited number of structural studies have been performed on polyurethanesusing scanning probe techniques to determine both the microstructure and the corresponding distribution of hard and soft segments within samples. This type of information is needed to better understand the mechanical properties of these materials and to facilitate modeling. In order to address these issues, we have fabricated a series of compression molded segmented poly(ester urethane) samples with hard (HS) to soft segment ratios from 19 to 100%. Samples were examined using scanning probe phase imaging techniques to obtain the topography and corresponding distribution of hard domains before and after heating at 100 C. A