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Cyclodextrins in polymer synthesis: free radical polymerisation of cyclodextrin complexes of cyclohexyl and phenyl methacrylate in aqueous medium
Author(s) -
Jeromin Julia,
Ritter Helmut
Publication year - 1998
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19980701)19:7<377::aid-marc377>3.0.co;2-t
Subject(s) - polymer chemistry , methacrylate , monomer , chemistry , polymerization , radical polymerization , methyl methacrylate , polymer , aqueous solution , solvent , cyclodextrin , organic chemistry
The polymerisation mechanism of 2,6‐dimethyl‐β‐cyclodextrin (Me 2 ‐β‐CD) complexes of phenyl methacrylate ( 1 ) and cyclohexyl methacrylate ( 2 ) is described. The polymerisation of the complexes 1 a and 2a was carried out in water with potassium peroxodisulfate/potassium hydrogensulfite as initiator. The unthreading of the Me 2 ‐β‐CD during the polymerisation led to water‐insoluble poly(phenyl methacrylate) ( 1b ) and poly(cyclohexyl methacrylate) ( 2b ). By comparison, analogously prepared polymers from uncomplexed monomers 1 and 2 in homogeneous organic solvent (THF) with AIBN as radical initiator showed significantly lower viscosities and were obtained in lower yields in both cases.