SYNTHESIS AND THERMAL-PROPERTIES OF COPOLY(PHENYLENE SULFIDE SULFIDE ETHER)S/

Copolymerization of phenylene sulfide and phenylene sulfide ether was carried out with various composition ratios. Their thermal properties were investigated by differential scanning calorimetry and thermogravi metric analysis. As the phenylene sulfide ether composition increased in copolymer, glass transition temperature, cold crystallization tempe rature, melting temperature and melt crystallization temperature all d ecreased. These results might be due to the flexibility of oxide group of phenylene sulfide ether. When the compositions of phenylene sulfid e ether were between 4 and 20% in the copolymer, it showed maximum hea t of fusion and heat of solidification. All of the copolymers exhibite d excellent thermal stabilities. (C) 1997 Elsevier Science Ltd.