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Synthesis and surface properties of polystyrene‐ graft ‐poly(ethylene glycol) copolymers
Author(s) -
Feng LiBang,
Zhou ShuXue,
You Bo,
Wu LiMin
Publication year - 2006
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.24953
Subject(s) - copolymer , contact angle , x ray photoelectron spectroscopy , materials science , ethylene glycol , polystyrene , polymer chemistry , differential scanning calorimetry , gel permeation chromatography , grafting , transmission electron microscopy , peg ratio , chemical engineering , polymer , composite material , nanotechnology , physics , finance , engineering , economics , thermodynamics
Polystyrene‐ graft ‐poly(ethylene glycol) copolymers (PS‐ g ‐PEG) were successfully synthesized using the “grafting‐through” method. The graft copolymers and the surface properties of their coats were characterized by1H‐NMR, gel permeation chromatography (GPC), differential scanning calorimetry (DSC), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), static contact angle measurement, and atomic force microscopy (AFM). Both DSC and TEM indicated that the graft copolymers had a microphase separated structure. AFM showed the microphase separated structure also occurred at the coat surface, especially at high PEG content, which could also be indirectly confirmed by the XPS and contact angle results. The formation mechanism of the microphase separated structure was discussed. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1458–1465, 2007