Inverse pH-response of temperature-sensitive copolymers by combination with porous CaCO3 framework

Hitoshi Tamagawa; Hiroyuki Kageyama; Yuya Oaki; Yu Hoshino; Yoshiko Miura; Hiroaki Imai

doi:10.1246/cl.150676

Inverse pH-response of temperature-sensitive copolymers by combination with porous CaCO₃ framework

Hitoshi Tamagawa, Hiroyuki Kageyama, Yuya Oaki, Yu Hoshino, Yoshiko Miura, Hiroaki Imai

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

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Abstract

The pH response of lower critical solution temperature (LCST) of N-isopropylacrylamide (NIPAAm)/N-[3-(dimethylamino) propyl] methacrylamide (DMAPM) copolymers was switched by combination with porous CaCO₃ microbeads. Although LCST of the simple copolymer hydrogels increases with decreasing pH, the critical value of the copolymers trapped in the porous framework decreases with the pH drop. The inversion of the pH response is ascribed to change of the effect of DMAPM by the presence of an ionic inorganic surface.

Original language	English
Pages (from-to)	1425-1427
Number of pages	3
Journal	Chemistry Letters
Volume	44
Issue number	10
DOIs	https://doi.org/10.1246/cl.150676
Publication status	Published - 2015

ASJC Scopus subject areas

Chemistry(all)

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abstract = "The pH response of lower critical solution temperature (LCST) of N-isopropylacrylamide (NIPAAm)/N-[3-(dimethylamino) propyl] methacrylamide (DMAPM) copolymers was switched by combination with porous CaCO3 microbeads. Although LCST of the simple copolymer hydrogels increases with decreasing pH, the critical value of the copolymers trapped in the porous framework decreases with the pH drop. The inversion of the pH response is ascribed to change of the effect of DMAPM by the presence of an ionic inorganic surface.",

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AU - Tamagawa, Hitoshi

AU - Kageyama, Hiroyuki

AU - Oaki, Yuya

AU - Hoshino, Yu

AU - Miura, Yoshiko

AU - Imai, Hiroaki

PY - 2015

Y1 - 2015

N2 - The pH response of lower critical solution temperature (LCST) of N-isopropylacrylamide (NIPAAm)/N-[3-(dimethylamino) propyl] methacrylamide (DMAPM) copolymers was switched by combination with porous CaCO3 microbeads. Although LCST of the simple copolymer hydrogels increases with decreasing pH, the critical value of the copolymers trapped in the porous framework decreases with the pH drop. The inversion of the pH response is ascribed to change of the effect of DMAPM by the presence of an ionic inorganic surface.

AB - The pH response of lower critical solution temperature (LCST) of N-isopropylacrylamide (NIPAAm)/N-[3-(dimethylamino) propyl] methacrylamide (DMAPM) copolymers was switched by combination with porous CaCO3 microbeads. Although LCST of the simple copolymer hydrogels increases with decreasing pH, the critical value of the copolymers trapped in the porous framework decreases with the pH drop. The inversion of the pH response is ascribed to change of the effect of DMAPM by the presence of an ionic inorganic surface.

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JO - Chemistry Letters

JF - Chemistry Letters

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ER -

Inverse pH-response of temperature-sensitive copolymers by combination with porous CaCO₃ framework

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