Influence of hard segment size on the melt transition temperature of thermoplastic rubbers
作者： Sebastião V. Canevarolo , Arthur W. Birley
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摘要: Thermoplastic rubbers on heating show a melt rheological transition which is interpreted as the onset of breakdown in long-range order domain structure. This mainly due to mobility PS end-blocks which, from this temperature upwards, can be removed their base-phase by forces exerted attached rubbery chain. The detected change slope an Arrhenius plot Melt Flow Index values at various temperatures, for wide range samples. shown directly related molecular weight hard-block segments (PS), supporting model proposed previously.
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