Abstract
The thermal properties of poly( p-phenylene sulphide) crystallized from dilute solutions have been investigated by means of differential scanning calorimetry. The effect of the heating rate on the melting temperature was analysed as well as the dependence of the thermal properties after fusion of the crystals obtained at different crystallization temperatures. A variation of the crystallization temperature after fusion was also observed for the different crystals. Doping the polymer with Lewis acids substantially modified the thermal traces, with the disappearance of the low temperature melting peak.
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