Adsorption of caffeine onto tannic acid-immobilized fiber and its elution with hot water

Kazuma Yamagami*, Yuki Matsuura, Shigeko Kawai-Noma, Daisuke Umeno, Kyoichi Saito, Kunio Fujiwara, Takanobu Sugo, Yurika Yajima, Junpei Hioki, Takashi Shiono, Hideyuki Wakabayashi

*この研究の対応する著者

研究成果査読

抄録

Tannic acid (TA) was immobilized onto nylon-6 fiber to adsorb caffeine. Glycidyl methacrylate (GMA) was graft-polymerized to gamma-ray-irradiated nylon-6 fiber and subsequently tannic acid was coupled with the epoxy groups of poly-GMA graft chain. The TA-immobilized fiber with a content of tannic acid of 25% exhibited an equilibrium amount of adsorbed caffeine of 3.1×10-2 mmol per g of the fiber at a concentration of 1 mM of caffeine solution. The amount of caffeine adsorbed was quantitatively eluted with 50°C hot water. After the eighth cycle of adsorption and elution, the amount of caffeine adsorbed onto the TA-immobilized fiber was retained without any deterioration.

本文言語English
ページ(範囲)298-302
ページ数5
ジャーナルkagaku kogaku ronbunshu
44
5
DOI
出版ステータスPublished - 2018
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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