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Graft copolymerization of mixtures of acrylic acid and acrylamide onto polypropylene film

✍ Scribed by Heung Jae Chun; Sung Min Cho; Young Moo Lee; Hyun Kyu Lee; Tae Suk Suh; Kyung Sub Shinn

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 238 KB
Volume: 72
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19990411)72:2<251::aid-app10>3.0.co;2-v

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✦ Synopsis

Liquid phase ultraviolet irradiation in the presence of benzophenone as a photosensitizer and barium hydroxide as a pH controller were used to graft the mixtures of acrylic acid and acrylamide to a polypropylene surface. The surface of the grafted polypropylene samples were characterized by Fourier transform infrared spectroscopy-attenuated total reflectance, electron spectroscopy for chemical analysis, scanning electron microscopy, and a contact angle meter. The pH value of the reaction medium that produced the graft with equal molar ratio was found to be ϳ 3.77. The optimal reaction condition was found at a monomer feed of 25%, a reaction time of 30 min, and a benzophenone concentration of 1%. Surface tension of the samples increased to a value of 40 dyn cm Ϫ1 due to the graft of the hydrophilic monomers.

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