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Leucine‐Based Block Copolymer Nano‐Objects via Polymerization‐Induced Self‐Assembly (PISA)
Author(s) -
Bauri Kamal,
Maiti Binoy,
De Priyadarsi
Publication year - 2016
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.201600065
Subject(s) - copolymer , chain transfer , polymer chemistry , polymerization , monomer , micelle , raft , dispersion polymerization , materials science , gel permeation chromatography , transfer agent , chemical engineering , chemistry , polymer , radical polymerization , organic chemistry , aqueous solution , composite material , engineering
Summary Polymerization‐induced self‐assembly (PISA) technique has been used to prepare leucine‐based block copolymer nano‐objects. A side‐chain leucine appending macromolecular chain transfer agent (macroCTA) has been employed for reversible addition‐fragmentation chain transfer (RAFT) mediated dispersion polymerization of benzyl methacrylate (BzMA) in methanol at 65 °C. 1 H NMR spectroscopy reveals near quantitative monomer conversions (≥90%) and gel permeation chromatography (GPC) indicated well‐defined block copolymer formation. Morphological evolution has been observed from spherical micelle to fibre to vesicle with increase of the length of the solvophobic block keeping the stabilizer block length and monomer solid content constant.