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Characterization and properties of amphiphilic block polymer based on poly(ethylene oxide) and poly(butyl acrylate)
Author(s) -
Wang Caiqi,
Zhang Guo,
Zhang Zhihao,
Chen Xinfang,
Tang Xinyi,
Tan Huimin
Publication year - 2003
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.12469
Subject(s) - copolymer , ethylene oxide , polymer chemistry , materials science , acrylate , amphiphile , crystallinity , differential scanning calorimetry , butyl acrylate , polymerization , polymer , oxide , chemical engineering , composite material , physics , metallurgy , engineering , thermodynamics
PEO‐b‐PBA [PEO: poly(ethylene oxide); PBA: poly(butyl acrylate)], an amphiphilic block copolymer, prepared by redox radical polymerization, was characterized by infrared and 1 H nuclear magnetic resonance spectroscopy. The result revealed the existence of PEO and PBA segment in purified block copolymer. The thermal behavior of the block copolymer was determined by differential scanning calorimetry. With the introduction of PBA noncrystalline segment, the crystallinity of PEO was decreased. The emulsifying and water absorptive properties of PEO‐b‐PBA were also examined. It was found that the emulsifying volume and type were dependent on the amount of block copolymer and the PEO content in block copolymer. Under a certain range, the emulsifying volume increases with an increase of PEO content. The more the PEO content in block copolymer, the stronger the water absorptivity was. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 3432–3436, 2003