Crystallization and nematic–isotropic transition activation energies measured using the Kissinger method | Zendy

Sha W. | Zendy

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Crystallization and nematic–isotropic transition activation energies measured using the Kissinger method

Author(s) -

Sha W.

Publication year - 2001

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.1362

Subject(s) - activation energy , differential scanning calorimetry , liquid crystal , crystallization , materials science , isotropy , polyester , dielectric , thermodynamics , glass transition , crystallography , polymer chemistry , chemistry , polymer , composite material , optics , physics , optoelectronics

The activation energies for crystallization in poly(3‐hydroxybutyrate) and for nematic–isotropic transition in liquid–crystalline polyesters have been calculated based on data obtained with a dielectric method and differential scanning calorimetry (DSC), respectively. This study explores the feasibility of using a modified Kissinger method to calculate the activation energies of these transitions. It has been found that the activation energy for crystallization in poly(3‐hydroxybutyrate) is 109 kJ/mol. The activation energy for nematic–isotropic transition in the liquid crystals is 487 kJ/mol. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2535–2537, 2001

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