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SUMMARY:Self segregation in water-borne latex coatings. - Richard Truman\,
  BP Institute
DTSTART:20101118T113000Z
DTEND:20101118T123000Z
UID:TALK31875@talks.cam.ac.uk
CONTACT:Helen Mawdsley
DESCRIPTION:Paints and coatings are composite materials made from componen
 ts which impart various properties on the final dried application. In cert
 ain situations it is preferable to have a component in just one section of
  the film\, for example anti-fouling or self cleaning agents at the film/a
 ir interface\, or an increased amount of adhering particles at the substra
 te.\nA theory for developing a novel method of segregation during drying o
 f a two component latex film has been derived mathematically. Through mode
 lling of the diffusion behaviour as a coupled PDE system it is clear that 
 two components\, ideally with Peclet numbers either side of unity\, will p
 referentially segregate. Experimental verification has been conducted thro
 ugh atomic force microscopy\, which enables surface analysis of films cast
  under varying conditions.
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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