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

doi:10.1252/kakoronbunshu.44.298

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

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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
巻	44
号	5
DOI	https://doi.org/10.1252/kakoronbunshu.44.298
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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10.1252/kakoronbunshu.44.298

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title = "Adsorption of caffeine onto tannic acid-immobilized fiber and its elution with hot water",

abstract = "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.",

keywords = "Adsorption, Caffeine, Elution with hot water, Radiation-induced graft polymerization, Tannic acid-immobilized fiber",

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

note = "Publisher Copyright: {\textcopyright} 2018 The Society of Chemical Engineers, Japan.",

year = "2018",

doi = "10.1252/kakoronbunshu.44.298",

language = "English",

volume = "44",

pages = "298--302",

journal = "Kagaku Kogaku Ronbunshu",

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T1 - Adsorption of caffeine onto tannic acid-immobilized fiber and its elution with hot water

AU - Yamagami, Kazuma

AU - Matsuura, Yuki

AU - Kawai-Noma, Shigeko

AU - Umeno, Daisuke

AU - Saito, Kyoichi

AU - Fujiwara, Kunio

AU - Sugo, Takanobu

AU - Yajima, Yurika

AU - Hioki, Junpei

AU - Shiono, Takashi

AU - Wakabayashi, Hideyuki

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

KW - Adsorption

KW - Caffeine

KW - Elution with hot water

KW - Radiation-induced graft polymerization

KW - Tannic acid-immobilized fiber

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U2 - 10.1252/kakoronbunshu.44.298

DO - 10.1252/kakoronbunshu.44.298

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EP - 302

JO - Kagaku Kogaku Ronbunshu

JF - Kagaku Kogaku Ronbunshu

SN - 0386-216X

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

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