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SUMMARY:Polymer/clay nanocomposites: The catalytic effect of clay - Prof M
 iroslav Huskić (National Institute of Chemistry)
DTSTART:20180928T090000Z
DTEND:20180928T100000Z
UID:TALK109945@talks.cam.ac.uk
CONTACT:Lingtao Kong
DESCRIPTION:Various clay minerals have been used as the catalysts in organ
 ic synthesis for decades. They catalyse various organic reactions either i
 n the pristine form\, or modified by protonation with acids\, exchange rea
 ctions with inorganic cations (Cr3+\, Al3+\, Cr3+\, Cu2+…) organic catio
 ns (N+‑R)\, and by attaching various initiator/catalyst species onto the
 ir surface. The catalytic effect of clay minerals in the field of polymer 
 synthesis was also observed\, but it was not as explored as in the organic
  synthesis. However\, this topic became interesting due to the progress in
  the development of polymer/clay nano composites.\n\nThe polymer/clay nano
 composites are usually prepared by one of three methods\, solution interca
 lation\, melt intercalation and in situ intercalative polymerization. The 
 first step of all those methods is the preparation of organically modified
  clay. In the second step\, a nanocomposite is formed by mixing the polyme
 r with modified clay using one of the above-mentioned methods. \n\nWhen in
  situ intercalative polymerization was used to prepare nanocomposites\, va
 rious catalytic effects have been observed\, which have been a consequence
  of clay as well as a modifier. A short review of the catalytic effects of
  clay minerals will be presented with the emphasis on radical polymerizati
 on of methyl methacrylate and a step-growth polymerization of the phenolic
  resin.\n
LOCATION:Pfizer Lecture Theatre
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