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SUMMARY:Dynamic arrest in polymer gels - Johan Mattsson\, Soft Matter Phys
 ics Group School of Physics & Astronomy University of Leeds
DTSTART:20121012T130000Z
DTEND:20121012T140000Z
UID:TALK40786@talks.cam.ac.uk
CONTACT:Tracy Inman
DESCRIPTION:A polymer dissolved in a solvent forms a gel by the formation 
 of cross-links. Cross-linking and gelation can be controlled by variation 
 of parameters such as temperature\, pH\, salt or surfactant concentration.
  In physical gels\, the cross-links are reversible and such gels play impo
 rtant roles in foods\, cosmetics\, energy materials and in pharmaceutical 
 products and applications. Interestingly\, even though the dynamic arrest 
 behaviour responsible for physical gelation shows strong similarities\, al
 so for systems of widely varying chemical nature\, we do not have a satisf
 actory understanding of the mechanisms involved. I will discuss recent exp
 erimental results on dynamic arrest in physical polymer gels focusing on t
 he different roles played by control parameters such as temperature\, poly
 mer and surfactant concentration.
LOCATION:Small Lecture Theater
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