Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
1999-10-26
Physics
Condensed Matter
Soft Condensed Matter
9 pages, 4 figures
Scientific paper
10.1088/0953-8984/12/8A/368
We study the structure and dynamics of a transient network composed of droplets of microemulsion connected by telechelic polymers. The polymer induces a bridging attraction between droplets without changing their shape. A viscoelastic behaviour is induced in the initially liquid solution, characterised in the linear regime by a stretched exponential stress relaxation. We analyse this relaxation in the light of classical theories of transient networks. The role of the elastic reorganisations in the deformed network is emphasized. In the non linear regime, a fast relaxation dynamics is followed by a second one having the same rate as in the linear regime. This behaviour, under step strain experiments, should induce a non monotonic behaviour in the elastic component of the stress under constant shear rate. However, we obtain in this case a singularity in the flow curve very different from the one observed in other systems, that we interpret in terms of fracture behaviour.
Appell Jacqueline
Filali Mahmoud
Michel Eberhard
Molino François
Mora Serge
No associations
LandOfFree
A transient network of telechelic polymers and microspheres : structure and rheology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A transient network of telechelic polymers and microspheres : structure and rheology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A transient network of telechelic polymers and microspheres : structure and rheology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-24445