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A comparison of the properties of methacrylate polymers derived from racemic and homochiral monomers containing a trifluoromethyl group at a tertiary stereogenic centre
Author(s) -
O'Hagan David,
Zaidi Naveed A.
Publication year - 1994
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19940820107
Subject(s) - differential scanning calorimetry , methacrylate , monomer , stereocenter , polymer chemistry , polymer , trifluoromethyl , materials science , chemistry , organic chemistry , enantioselective synthesis , physics , alkyl , catalysis , thermodynamics
Three homochiral CF 3 containing methacrylate esters have been prepared, and polymerised with butyllithium at ‐78°C. Melting points, gel‐permeation chromatography, differential scanning calorimetry and X‐ray powder diffraction analyses of the resulting polymers have been compared to those of their racemic counterparts. It is clear that the homochiral monomers give rise to largely crystalline methacrylates whereas the racemic monomers generate amorphous materials.