Effect of blending on the multiple melting behavior of polyphenylene sulfide

✍ Scribed by Kancheng Mai; Zhen Mei; Jiarui Xu; Hanmin Zeng

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 163 KB
• Volume: 63
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19970222)63:8<1001::aid-app6>3.0.co;2-m

✦ Synopsis

The effects of melting time (t melt ) and annealing time (t a ) at a temperature closer to the melting point of polyphenylene sulfide (PPS) on the multiple melting behavior of neat PPS, and PPS component in their blends have been investigated by differential scanning calorimetry (DSC). It is found that double endotherm peak of PPS annealed at 275ЊC for less than three hours is different from that annealed for twelve hours. Double endotherm peak of PPS in PEEK/PPS blends shifts to lower temperature, and the intensity of the upper melting peak decreases significantly by addition of polyether ether ketone (PEEK ). An additional third melting peak could be observed. The temperature of third melting peak is above 310ЊC and increases as the t a and PEEK content are increased. For PEK-C/PPS blends, the lower and upper melting temperatures of the PPS component are higher than that of neat PPS annealed at 275ЊC for twenty-three hours.