Relationship between viscoelastic transition and yield behavior of phenolphthalein poly(ether ketone)

✍ Scribed by Yanchun Han; Binyao Li; Yuming Yang

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 351 KB
• Volume: 62
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19961205)62:10<1739::aid-app27>3.0.co;2-v

✦ Synopsis

People's Republic of China

SYNOPSIS

The viscoelastic behavior of phenolphthalein poly(ether ketone) (PEK-C) and its relationship to yielding was studied. The following phenomena were observed (1) The relaxation behavior a t strain near yield closely approximated that a t low strain but near the Tg; (2) the temperature and strain rate dependence of yield stress could be modeled by the oneprocess Eyring theory and the value of the activation volume was the same as that of the glass transition; and (3) according to the Zhurkov-Bueche equation, the CY transition was related to the yield behavior. All these results indicated that the glass transition was the main factor that controlled the yield behavior.