Article

Combining configurational entropy and self-concentration to describe the component dynamics in miscible polymer blends.

Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain.
The Journal of Chemical Physics (impact factor: 3.33). 11/2005; 123(14):144908. DOI:10.1063/1.2052592 pp.144908
Source: PubMed

ABSTRACT We provide a new approach to describe the component segmental dynamics of miscible polymer blends combining the concept of chain connectivity, expressed in terms of the self-concentration, and the Adam-Gibbs model. The results show an excellent agreement between the prediction of our approach and the experimental data. The self-concentrations obtained yield length scales between 1 and 3.2 nm depending on the temperature, the flexibility of the polymer, expressed in terms of the Kuhn segment, and its concentration in the blends, at temperatures above the glass transition range of the blend.

0 0
 · 
0 Bookmarks
 · 
14 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

Adam-Gibbs model
 
blend
 
blends
 
component segmental dynamics
 
excellent agreement
 
experimental data
 
glass transition range
 
miscible polymer blends
 
self-concentrations
 
yield length scales