Re-entrant behavior in dynamics of binary mixtures of soft hybrid nanocolloids and homopolymers

Chandran, Sivasurender and Sarika, CK and Kandar, AK and Basu, JK and Narayanan, S and Sandy, A (2011) Re-entrant behavior in dynamics of binary mixtures of soft hybrid nanocolloids and homopolymers. In: Journal of Chemical Physics, The, 135 (13).

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Abstract

We present results of measurements of temperature and wavevector dependent dynamics in binary mixtures of soft polymer grafted nanoparticles and linear homopolymers. We find evidence of melting of the dynamically arrested state of the soft nanocolloids with addition of linear polymers followed by a re-entrant slowing down of the dynamics with further increase in polymer density, depending on the size ratio, delta, of the polymers and the nanocolloids. For higher delta the re-entrant behavior is not observed, even for the highest added polymer density, explored here. Possible explanation of the observed dynamics in terms of the presence of a double - glass phase is provided. (C) 2011 American Institute of Physics. [doi:10.1063/1.3644930]

Item Type:	Journal Article
Publication:	Journal of Chemical Physics, The
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	04 Nov 2011 09:41
Last Modified:	04 Nov 2011 09:41
URI:	http://eprints.iisc.ac.in/id/eprint/41822

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