Segmented polyurethanes that consist of alternating soft and hard segments offer
unique possibilities of tailor-made polymers by varying block length and composition
[1]. Thermodynamic immiscibility between hard and soft segments induces phase
separation and generates a two-phase morphology in these segmented block
copolymers. There are some reports on evaluation of structure-properties in these
segmented polyurethanes [2-4].
In the present study the effect of hard segment content and type of polyol on the
thermo-mechanical properties as well as size of soft and hard domains and micro
phase separation of synthesized polyurethane networks have been studied.