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Ammonia adsorption behavior of polypropylene nonwoven fabric grafted with acrylic acid
Author(s) -
Kim Sang Yool,
Choi Chang Nam
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.10328
Subject(s) - polypropylene , grafting , adsorption , benzophenone , acrylic acid , ammonia , yield (engineering) , polymer chemistry , nonwoven fabric , materials science , chemistry , nuclear chemistry , chemical engineering , copolymer , composite material , organic chemistry , polymer , fiber , engineering
An attempt was made to synthesize an adsorbent by the photoinduced grafting of acrylic acid (AA) onto polypropylene nonwoven fabrics using benzophenone (BP) as a photosensitizer in a CH 3 OH/H 2 O medium. As the BP concentration was increased, the graft yield was increased up to a specific value and then decreased, and the effect of AA concentration showed the same tendency. It was also found that the graft yield increased with the reaction time and temperature. The amounts of ammonia adsorbed onto polypropylene nonwoven fabrics grafted with AA (PP‐ g ‐AA) were dependent on the graft yield, adsorption time, and ammonia gas pressure. The adsorption capacity of PP‐ g ‐AA was 5.86 mmol/g at the graft yield of 116.6%, which was much higher than that of active carbon or silica gel. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 295–301, 2002; DOI 10.1002/app.10328