Thermal degradation of poly(aryl‐ether–ether‐ketone) (PEEK): A differential scanning calorimetry study | Zendy

Day M. | Zendy; Suprunchuk T. | Zendy; Cooney J. D. | Zendy; Wiles D. M. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Thermal degradation of poly(aryl‐ether–ether‐ketone) (PEEK): A differential scanning calorimetry study

Author(s) -

Day M.,

Suprunchuk T.,

Cooney J. D.,

Wiles D. M.

Publication year - 1988

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1988.070360510

Subject(s) - differential scanning calorimetry , peek , crystallization , materials science , ether , nucleation , polymer chemistry , kinetics , thermal analysis , isothermal process , avrami equation , chemical engineering , chemistry , composite material , thermal , thermodynamics , organic chemistry , polymer , crystallization of polymers , physics , quantum mechanics , engineering

Differential scanning calorimetry (DSC) has been used to study the crystallization kinetics and thermal characteristics of poly(aryl‐ether–ether‐ketone) (PEEK) samples heated under a variety of conditions. Samples were heated in nitrogen and air at temperatures between 380 and 420°C for times up to 120 min. The results indicate that as the holding time and temperature of the melt increased, the amount of recrystallizable material decreased, especially when heated in air. Isothermal crystallization kinetics confirmed the presence of a two‐stage crystal nucleation and growth process with Avrami exponents of the order of about 2.4 and 1.5 for the first and second processes, respectively. Analysis of the primary crystallization process using the Avrami equation revealed that PEEK samples heated above the melt temperature in air crystallized at a much slower rate than samples heated in nitrogen.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research