Prediction of the glass transition temperature of semicrystalline polymer/salt complexes

An explicit expression based on the configurational entropy model, the Flory-Huggins theory and Guggenheim's form of Debye-Hückel theory has been derived for predicting the glass transition temperatures (Tg) of binary semicrystalline polymer/salt complexes. The proposed configurational entropy...

Full description

Saved in:
Bibliographic Details
Published in:Journal of polymer science. Part B, Polymer physics Polymer physics, 2009-04, Vol.47 (8), p.793-798
Main Authors: Koh, Joo Hwan, Park, Jung Tae, Koh, Jong Kwan, Kim, Jong Hak
Format: Article
Language:English
Subjects:
Applied sciences
configurational entropy
crystal structures
Exact sciences and technology
glass transition
metal-polymer complexes
Organic polymers
Physicochemistry of polymers
Properties and characterization
Thermal and thermodynamic properties
thermodynamics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An explicit expression based on the configurational entropy model, the Flory-Huggins theory and Guggenheim's form of Debye-Hückel theory has been derived for predicting the glass transition temperatures (Tg) of binary semicrystalline polymer/salt complexes. The proposed configurational entropy (Sc) of polymer/salt systems consists of the disorientation entropy of polymer 1 (Sdiso₋₁), the dissociation entropy of salt (Sdiss₋₂), the mixing entropy (Smix₋₁₂) and the specific interaction entropy (Sspe₋₁₂). In particular, the effect of crystalline segments was accounted for by the current model. The prediction of the proposed Tg model is in good agreement with experimental data. Our results demonstrate that the small change of the Tg in semicrystalline polymer/salt complexes compared to amorphous systems is mostly attributable to the reduced configurational entropy due to the presence of crystalline segments.
ISSN:0887-6266
1099-0488
DOI:10.1002/polb.21684