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Synthesis and long‐term stability of acrylic acid and N, N‐methylene‐bis‐acrylamide radiation grafted polypropylene fibers
Author(s) -
Pryhazhayeva Lidziya,
Shunkevich Aliaksandr,
Polikarpov Aliaksandr,
Krul Leonid
Publication year - 2021
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.50805
Subject(s) - acrylic acid , grafting , polypropylene , monomer , acrylamide , thermal stability , polymer chemistry , synthetic fiber , materials science , polymerization , fourier transform infrared spectroscopy , polymer , ultimate tensile strength , nuclear chemistry , chemical engineering , chemistry , fiber , composite material , organic chemistry , engineering
New carboxyl ion‐exchange fibers prepared by acrylic acid (AA) and N, N‐methylene‐bis‐acrylamide (MBAA) monomer grafting to polypropylene (PP) fibers based on the method of γ‐rays pre‐irradiation in air followed by a Mohr's salt redox initiation of grafting reaction were studied. Grafting degree, homopolymer quantity, monomer conversion and grafting efficiency were determined. FTIR spectroscopy was used to establish the nature of the grafted fibers. The thermal stability of the materials was investigated based on DSC analysis in N 2 /O 2 mixture. The long‐term stability during 6–8 years of storage was examined by the measurement of the tensile strength and the elongation at break of the fibers, and the chemical oxygen demand in water extracts as well as in the oxygen uptake experiments. The influence of some factors on the useful life of the grafted fibers was studied: a MBAA cross‐linking, exposure to day light, the Fe (III) residue presence, a grafting reaction temperature. It was found that small amounts of the adsorbed Fe (III) ions increase the deterioration rate of the grafted fibers, while small amounts of MBAA delay this negative process.