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Peroxide‐Grafted PDMS: Hydrosilylation Reaction and Thiol‐Ene Chemistry as an Alternative Pathway
Author(s) -
Lucas Patrice,
Fleury Etienne,
Estur JeanFrançois,
Lapinte Vincent,
Robin JeanJacques
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900310
Subject(s) - hydrosilylation , peroxide , chemistry , polymer chemistry , ene reaction , catalysis , polymer , yield (engineering) , silicone , allylic rearrangement , click chemistry , decomposition , hydrogen peroxide , organic chemistry , materials science , metallurgy
Peroxide‐containing PDMS was synthesized according to a new pathway. Although hydrosilylation is one of the main reactions carried out in silicone chemistry, the catalysts used are very sensitive to the chemical nature of the reactants and remained inefficient to graft allylic peroxide. Radical catalyzed thiol‐ene chemistry was involved for the first time to yield an initiator group containing polymer. The peroxide‐grafted polysiloxane structure and decomposition were characterized using 1 H, 13 C and 29 Si NMR, FT‐IR and Raman spectroscopies, SEC and DSC. These macroinitiators can be used to obtain polysiloxane able to undergo crosslinking.