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Title: Effect of fatty acids on the accelerated sulfur vulcanization of rubber by active zinc/carboxylate complexes
Authors: Preeyanuch Junkong
Rie Morimoto
Kosuke Miyaji
Atitaya Tohsan
Yuta Sakaki
Yuko Ikeda
King Mongkut's University of Technology North Bangkok
Kyoto Institute of Technology
Mahidol University
Keywords: Chemical Engineering;Chemistry
Issue Date: 1-Jan-2020
Citation: RSC Advances. Vol.10, No.8 (2020), 4772-4785
Abstract: © 2020 The Royal Society of Chemistry. The effect of fatty acids with different aliphatic chain lengths on the accelerated vulcanization reaction of isoprene rubber was investigated through the generation of new intermediates composed of dinuclear bridging bidentate zinc/carboxylate complexes. Using the combination of in situ time-resolved Fourier-transform infrared spectroscopy and in situ time-resolved zinc K-edge X-ray absorption fine structure spectroscopy, the essential complex structure of the intermediates formed during the vulcanization reaction of isoprene rubber was determined to be independent of the aliphatic chain length of fatty acids. However, the reactivity of arachidic acid with ZnO was found to be low, which prolonged the induction period and curing time, and slowed down the curing rate in the vulcanization of isoprene rubber. These results help to understand the complicated vulcanization reaction of rubber, especially natural rubber, which inherently contains various fatty acids. The results obtained in this study are important for developing well-designed high-performance natural rubber products in the future.
ISSN: 20462069
Appears in Collections:Scopus 2020

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