Abstract
The polyethylene glycol (PEG) based polyurethane (PU) and its semi interpenetrating polymer networks (SIPNs) with polystyrene (PS) were prepared. The FTIR, physico-mechanical properties like density, tensile strength, percentage elongation at break and surface hardness of the IPNs were measured. Wide angle X-ray studies (WAXS) were made to know the microcrystalline parameters such as crystal size (〈 N〉), lattice disorder ( g), surface ( D s) and volume ( D v) weighted crystal size of SIPNs. The different asymmetric column length distribution functions were employed using Exponential, Lognormal and Reinhold methods and the results are compared.
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