Linked Life Data

21525554

Source:http://linkedlifedata.com/resource/pubmed/id/21525554

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
19
pubmed:dateCreated
2011-5-10
pubmed:abstractText
We study phase separation and transient gelation experimentally in a mixture consisting of polydisperse colloids (polydispersity: ??6%) and non-adsorbing polymers, where the ratio of the average size of the polymer to that of the colloid is ??0.062. Unlike what has been reported previously for mixtures with somewhat lower colloid polydispersity (??5%), the addition of polymers does not expand the fluid-solid coexistence region. Instead, we find a region of fluid-solid coexistence which has an approximately constant width but an unexpected re-entrant shape. We detect the presence of a metastable gas-liquid binodal, which gives rise to two-stepped crystallization kinetics that can be rationalized as the effect of fractionation. Finally, we find that the separation into multiple coexisting solid phases at high colloid volume fractions predicted by equilibrium statistical mechanics is kinetically suppressed before the system reaches dynamical arrest.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1361-648X
pubmed:author
pubmed:issnType
Electronic
pubmed:day
18
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
194116
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Polydispersity effects in colloid-polymer mixtures.
pubmed:affiliation
SUPA and School of Physics and Astronomy, The University of Edinburgh, Edinburgh, UK. S.Liddle@ed.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't