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首页> 外文期刊>Journal of Applied Polymer Science >Crystallization and melting behavior of poly(p-phenylene sulfide) in blends with poly(ether sulfone)
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Crystallization and melting behavior of poly(p-phenylene sulfide) in blends with poly(ether sulfone)

机译：聚对苯硫醚与聚醚砜共混物的结晶和熔融行为

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摘要

Crystallization and melting behaviors of poly(p-phenylene sulfide) (PPS) in blends with poly(ether sulfone) (PES) prepared by melt-mixing were investigated by differential scanning calorimetry (DSC). The blends showed two glass transition temperatures corresponding to PPS- and PES-rich phases, which increased with increasing PES content, indicating that PPS and PES have some compatibility. The cold crystallization temperature of the blended PPS was a little higher than that of pure PPS. Also, the heats of crystallization and melting of the blended PPS decreased with increasing PES content, indicating that the degree of crystallinity decreased with an increase of PES content. The isothermal crystallization studies revealed that the crystallization of PPS is accelerated by blending PPS with 10 wt % PES and further addition results in the retardation. The Avrami exponent n was about 4 independent on blend composition. The activation energy of crystallization increased by blending with PES. The equilibrium melting point decreased linearly with increasing PES content.
机译：通过差示扫描量热法（DSC）研究了聚对苯硫醚（PPS）与通过熔融混合制备的聚醚砜（PES）共混物的结晶和熔融行为。共混物显示出两个玻璃化转变温度，分别对应于富含PPS和PES的相，并且随着PES含量的增加而增加，表明PPS和PES具有一定的相容性。混合的PPS的冷结晶温度略高于纯PPS的结晶温度。另外，共混的PPS的结晶热和熔融热随着PES含量的增加而降低，表明结晶度随着PES含量的增加而降低。等温结晶研究表明，通过将PPS与10 wt％的PES混合可以加速PPS的结晶，进一步添加会导致延迟。 Avrami指数n约为4，与共混物组成无关。与PES混合可增加结晶的活化能。随着PES含量的增加，平衡熔点呈线性下降。

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