Volume 87, Number 6, September 2009
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||08 October 2009|
Topological changes at the gel transition of a reversible polymeric network
Department of Physics, San Diego State University - San Diego, CA 92128, USA
2 Department of Physics, Ben-Gurion University of the Negev - Beer-Sheva, 84105, Israel
Corresponding author: firstname.lastname@example.org
Accepted: 9 September 2009
We investigate how the network topology of an ensemble of telechelic polymers changes with temperature. The telechelic polymers serve as “links" between “nodes", which consist of aggregates of their associating end groups. Our analysis shows that the degree distribution of the system is bimodal and consists of two Poissonian distributions with different average degrees. The number of nodes in each of them as well as the distribution of links depend on temperature. By comparing the eigenvalue spectra of the simulated gel networks with those of reconstructed networks, the most likely topology at each temperature is determined. Topological changes occur at the transition temperatures reported in our previous study (Baljon A. R. C. et al., J. Chem. Phys., 126 (2007) 044907). Below the micelle transition the topology can be described by a robust bimodal network in which superpeer nodes are linked among themselves and all peer nodes are linked only to superpeers. At even lower temperatures the peers completely disappear leaving a structure of interconnected superpeers.
PACS: 89.75.Fb – Structures and organization in complex systems / 83.80.Qr – Surfactant and micellar systems, associated polymers / 82.70.Gg – Gels and sols
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.