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Amidation of acrylic acid grafted polyethylene film with isopropylamine and temperature‐responsive character of the resulting amidated film
Author(s) -
Wang Tao,
Shi Shan,
Li Li,
Zhao Liqun,
Kuroda Shinichi,
Kubota Hitoshi
Publication year - 2009
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.29448
Subject(s) - photografting , acrylic acid , monomer , polyethylene , polymer chemistry , isopropylamine , materials science , solvent , reagent , chemistry , organic chemistry , composite material , polymer
An acrylic acid (AA) grafted polyethylene (PE) film with a homogeneous distribution of grafted chains was prepared by the photografting of AA onto a low‐density PE film with a thickness of 30 μm. The AA‐grafted PE film was subjected to amidation with isopropylamine (IPA) at 25°C in water as a solvent. Up to 80 mol % of the carboxyl groups of the AA‐grafted chains could be successfully converted to N ‐isopropylacrylamide (NIPAAm) residues through the control of the amidation conditions, such as the reaction time, amount of the condensation reagent, and concentration of IPA. The resulting amidated PE film exhibited a temperature‐responsive character: the film swelled and shrank in water below and above a temperature range of about 40–60°C, respectively. The extent of the character of the amidated PE film was greater than that of NIPAAm‐ and NIPAAm/AA‐grafted PE films prepared by the photografting of NIPAAm monomer and NIPAAm/AA binary monomers, respectively. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009