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Preparation of macro reversible addition–fragmentation chain transfer copolymers and their application in pigment dispersion
Author(s) -
Zhang Lianbing,
Fang Kuanjun,
Fu Shaohai,
Zhang Xia,
Tian Anli
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33606
Subject(s) - dispersity , copolymer , chain transfer , raft , materials science , polymer chemistry , maleic anhydride , styrene , gel permeation chromatography , reversible addition−fragmentation chain transfer polymerization , polymerization , dispersion polymerization , fourier transform infrared spectroscopy , molar mass distribution , particle size , chemical engineering , radical polymerization , polymer , composite material , engineering
By using reversible addition–fragmentation chain transfer (RAFT) controlled polymerization, we prepared styrene–maleic anhydride copolymers with RAFT end groups. The resulting copolymers were characterized by Fourier transform infrared and 1 H‐NMR spectroscopy. The molecular weights and molecular weight distributions were determined with gel permeation chromatography. The dispersing ability of the hydrolyzed macro reversible addition–fragmentation chain transfer (macro‐RAFT) copolymers was evaluated. An organic phthalocyanine blue pigment (P.B.15 : 3) was dispersed with the macro‐RAFT copolymers by vigorous stirring and ultrasonic processing. The properties (particle size and polydispersity index) of the pigment dispersions were measured. The results show that with prolonged ultrasonication time, the particle size and polydispersity index decreased first and increased slightly later. There were no remarkable differences in the particle size and particle size distribution between the macro‐RAFT copolymer and poly(styrene‐ co ‐maleic anhydride) dispersed pigment dispersions. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012