Europhys. Lett.
Volume 76, Number 6, December 2006
Page(s) 1116 - 1122
Section Condensed matter: structural, mechanical and thermal properties
Published online 23 November 2006
Europhys. Lett., 76 (6), pp. 1116-1122 (2006)
DOI: 10.1209/epl/i2006-10396-9

Dynamics of associating polymers with random structure

A. N. Semenov

Institut Charles Sadron - 6 rue Boussingault, 67083 Strasbourg Cedex, France

received 14 June 2006; accepted in final form 25 October 2006
published online 23 November 2006

Solution dynamics of associating polymer chains with many $(N \gg 1)$ randomly distributed strongly interacting groups (stickers) are considered theoretically. The stickers tend to associate pairwise, and the polymer backbone is semirigid and soluble. It is shown that there exists a finite concentration range where the polymers form a reversible network with a virtually frozen structure: in this regime both the stress relaxation time and the viscosity exponentially increase with N and with c.

61.25.Hq - Macromolecular and polymer solutions; polymer melts; swelling.
83.80.Kn - Physical gels and microgels.
83.80.Qr - Surfactant and micellar systems, associated polymers.

© EDP Sciences 2006