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Synthesis of end‐group functionalized poly(octadecyl vinyl ether)
Author(s) -
Lievens Serge S.,
Goethals Eric J.
Publication year - 1996
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199611)41:3<277::aid-pi593>3.0.co;2-#
Subject(s) - end group , vinyl ether , polymer chemistry , ether , group (periodic table) , materials science , chemistry , organic chemistry , copolymer , polymer
The cationic polymerization of octadecyl vinyl ether (ODVE) initiated by trimethylsilyl iodide and 1,1‐diethoxyethane in the presence of ZnI 2 in toluene at 0°C and 10°C has been investigated. For molecular weights lower than 6000, a linearity of M̄ n with conversion was observed, but for higher molecular weights a strong deviation from calculated values, assuming a living mechanism, was found. Kinetic analysis of the polymerization and the variation of molecular weight as a function of conversion was in agreement with a transfer to monomer with k tr / k p ≌ 0.006 at 10°C. Analysis of the polymers obtained by termination with methanol provided evidence that the alkenyl ether end‐groups formed by the transfer reaction lead to the same acetal end‐groups as the active species. As a consequence, it is possible to prepare functionalized polyODVE polymers by end‐capping with alcohols. This was confirmed by the synthesis of polyODVE macromonomers by end‐capping with 2‐hydroxyethyl methacrylate.