Dissociating sticker dynamics from chain relaxation in supramolecular polymer networks—The importance of free partner

Associating polymers constitute a fascinating class of materials because of the richness in their rheological behavior. Their rheology is known to be mainly dictated by the nature and intrinsic stabilities of transient associations. Here, we provide a direct observation of the importance of free ass...

Full description

Saved in:
Bibliographic Details
Published in:Journal of rheology (New York : 1978) 2017-11, Vol.61 (6), p.1123-1134
Main Authors: Brassinne, J., Cadix, A., Wilson, J., van Ruymbeke, E.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Associating polymers constitute a fascinating class of materials because of the richness in their rheological behavior. Their rheology is known to be mainly dictated by the nature and intrinsic stabilities of transient associations. Here, we provide a direct observation of the importance of free associating sites in the macroscopic relaxation of supramolecular networks constructed from ultrahigh molecular weight polymers with sparsely distributed stickers of finite functionality. Their rheological signature affords evidence that the macroscopic relaxation of supramolecular networks can be apparently dissociated from the intrinsic lifetime of the associating units, provided that diffusion processes do not lead to successful chain relaxation at the microscopic level.
ISSN:0148-6055
1520-8516
DOI:10.1122/1.4997594