Data di Pubblicazione:
2013
Citazione:
Telechelic melt polymer’s structure variation depending on shear deformation / C. Manassero, C. Castellano. - In: JOURNAL OF MACROMOLECULAR SCIENCE. PHYSICS. - ISSN 0022-2348. - 52:10(2013), pp. 1465-1477. [10.1080/00222348.2013.771019]
Abstract:
We present the result of molecular dynamics (MD) simulations of bead and spring models
of associating polymers at melt-like densities, both in static conditions and when a shear
rate is applied. Specifically, we consider the response of telechelic polymers of general
formula AB12A to four different values of shear rate. The A terminals tend to associate
with each other and in bulk conditions form clusters or micelles. A reversible network or
physical gel is formed by a large fraction of bridging chains that interconnect different
clusters. The micelles assume different form depending on the interaction strengths.
When a shear rate is applied, the clusters are broken and the chains tend to stretch.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
associating polymers; computer simulation; gels; liquid crystals; molecular dynamics; shear deformation
Elenco autori:
C. Manassero, C. Castellano
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