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The structural, mechanical, and thermal properties of a polyetherpolyester segmented copolymer system [poly(tetramethylene oxide)/poly(tetramethylene terephthalate)] and two polycaprolactone-polyurethane elastomeric systems (based on 4, 4′-diphenylmethane diisocyanate or 4, 4′-dicylohexylmethane diisocyanate) were investigated. Experimental techniques employed in the analysis include DSC, dynamic mechanical testing, IR dichroism, small-angle x-ray and laser light scattering, and tensile testing. Results show that material properties can be explained in terms of system compatibility, crystallization characteristics, and domain morphologies.
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Bogart et al. (1980) studied this question.
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