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Preparation and characterization of PSt‐ b ‐PHEMA metal hybrids
Author(s) -
Wang Yanmei,
Wu Jingshen,
Yuan Jinying,
Sun Guifen,
Pan Caiyuan
Publication year - 2002
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.10278
Subject(s) - copolymer , polymer chemistry , methacrylate , micelle , polystyrene , atom transfer radical polymerization , metal , materials science , hydroxide , metal hydroxide , ethylene oxide , metal ions in aqueous solution , polymerization , chemistry , inorganic chemistry , organic chemistry , polymer , composite material , aqueous solution , metallurgy
The block copolymer polystyrene‐ b ‐poly[2‐(trimethylsilyloxy)ethylene methacrylate] (PSt‐ b ‐PTMSEMA) was synthesized using atom‐transfer radical polymerization (ATRP). The hydrolysis of PSt‐ b ‐PTMSEMA led to the formation of an amphiphilic block copolymer, polystyrene‐ b ‐poly(2‐hydroxylethyl methacrylate) (PSt‐ b ‐PHEMA), which was characterized by GPC and 1 H‐NMR. TEM showed that the PSt‐ b ‐PHEMA formed a micelle, which is PSt as the core and PHEMA as the shell. Under appropriate conditions, the nickel or cobalt ion cause chemical reactions in these micelles and could be reduced easily. ESCA analysis showed that before reduction the metal existed as a hydroxide; after reduction, the metal existed as an oxide, and the metal content of these materials on the surface is more than that on the surface of the copolymer metal ion. XRD analysis showed that the metal existed as a hydroxide before reduction and existed as a metal after reduction. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2883–2891, 2002; DOI 10.1002/app.10278