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Atom Transfer Radical Polymerization Using Multidentate Amine Ligands Supported on Soluble Hyperbranched Polyglycidol
Author(s) -
Kumar Kainthan Rajesh,
Kizhakkedathu Jayachandran N.,
Brooks Donald E.
Publication year - 2004
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.200300098
Subject(s) - polymer chemistry , polymerization , atom transfer radical polymerization , chemistry , dispersity , living free radical polymerization , ionic polymerization , styrene , chain transfer , reversible addition−fragmentation chain transfer polymerization , radical polymerization , precipitation polymerization , living polymerization , chain growth polymerization , polymer , copolymer , organic chemistry
Summary: Controlled polymerization of styrene in toluene was achieved by atom transfer radical polymerization (ATRP) using hyperbranched polyglycidol‐supported multidentate amine ligands/Cu I Br catalyst systems. These catalyst systems with nanoscopic dimensions were more active than the corresponding low‐molecular‐weight ligands. The controlled/living nature of the polymerization is supported by linear first order plots (ln[M] o /[M] versus time) and a linear increase of $\overline M _{\rm n}$ versus conversion as well as low polydispersity. Similar controlled polymerization of methyl methacrylate was possible in acetonitrile. Up to 97% of total copper used for polymerization could be removed from the polymer by simple precipitation in methanol and filtration.Molecular weight characteristics for styrene polymerization using PG‐triamine as a ligand.