On the deformation of star shaped polystyrenes in flowing solutions

Authors
Dondos, A Papanagopoulos, D de Gennes, PG Brochard-Wyart, FB
Citation
A. Dondos et al., On the deformation of star shaped polystyrenes in flowing solutions, MACROMOL TH, 8(2), 1999, pp. 147-150
Citations number
17
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR THEORY AND SIMULATIONS
ISSN journal
10221344 → ACNP
Volume
8
Issue
2
Year of publication
1999
Pages
147 - 150
Database
ISI
SICI code
1022-1344(199903)8:2<147:OTDOSS>2.0.ZU;2-B
Abstract
The elongation of star shaped polystyrenes in flowing solutions depends on their number of branches and becomes lower when the number of branches incr eases. The deformation of these polymers, ;expressed by the change of the c ritical concentrations c** and c*, varies as (f/2)(2) for a constant differ ence in shear rate (f is the number of branches). A simple theoretical mode l correlates the increase of the resistance to the deformation or the rigid ity of the star shaped polymers to the factor (f/2)(2).