New class of dynamics in concentrated polymer gels
Artikel i vetenskaplig tidskrift, 2007

We show that concentrated poly(methyl methacrylate) solution exhibits a new class of coupled dynamics, which can be regarded as an intermediate between the collective diffusion of solutions and the structural relaxations of glasses. This class of dynamics have a relaxation rate that is directly proportional to the wave vector. The transition from diffusive to coupled collective dynamics occurs at smaller length scales with increasing polymer concentration and decreasing temperature. The experimental observations can be understood by considering the contributions from physical cross-links interconnected by stiff polymer segments. © 2007 American Institute of Physics.

Författare

Christer Svanberg

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Takashi Uematsu

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Peter Berntsen

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Per Jacobsson

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Journal of Chemical Physics

0021-9606 (ISSN) 1089-7690 (eISSN)

Vol. 126 5 Art. No. 051103-

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1063/1.2432884

Mer information

Skapat

2017-10-07