Isothermal crystallization measurements on poly(ethylene terephthalate) by differential enthalpic analysis

✍ Scribed by Bernard Miller

• Publisher: John Wiley and Sons
• Year: 1967
• Tongue: English
• Weight: 262 KB
• Volume: 11
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1967.070111121

✦ Synopsis

The process of solid-phase crystallization in poly(ethy1ene terephthalate) has been followed by means of differential enthalpic analysis. Kinetic data for the process has been obtained for isothermal annealing from 100 to 115OC., showing induction times and first-order rate dependence. For the material studied, undrawn polyester filaments, an activation energy of 44 kcal./mole was determined. The technique used provides more direct monit.oring of the crystallization phenomenon than that achieved with other methods.