Electrical control of the volume of pH-sensitive micro-gels

Takashi Sawai; Hiroaki Shinohara; Yoshihito Ikariyama; Masuo Aizawa

doi:10.1016/0022-0728(91)80036-P

Electrical control of the volume of pH-sensitive micro-gels

Takashi Sawai^*, Hiroaki Shinohara, Yoshihito Ikariyama, Masuo Aizawa

^*Corresponding author for this work

Life Sciences and Bioengineering

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

20 Scopus citations

Abstract

The volume of a pH-sensitive polymer gel was electrically controlled in a pH modulator cell composed of a polypyrrole-coated platinum mesh electrode. A pH-sensitive micro-gel of methyl-methacrylate-acrylic acid co-polymer with a diameter of 80 nm in the shrunken state and 140 nm in the swollen state was prepared. The micro-gel volume was reversibly modulated by ca. 30% simultaneously in response to the electrically controlled pH of a solution. The transmittance of the micro-gel suspension was employed to monitor the dynamics of swelling by clarifying the relation of the transmittance to the diameter of the swollen micro-gel by absorbing water.

Original language	English
Pages (from-to)	399-407
Number of pages	9
Journal	Journal of Electroanalytical Chemistry
Volume	297
Issue number	2
DOIs	https://doi.org/10.1016/0022-0728(91)80036-P
State	Published - 1991/01/25

ASJC Scopus subject areas

Analytical Chemistry
General Chemical Engineering
Electrochemistry

Access to Document

10.1016/0022-0728(91)80036-P

Cite this

@article{551956c7208345c39c5545dcfe8fcb80,

title = "Electrical control of the volume of pH-sensitive micro-gels",

abstract = "The volume of a pH-sensitive polymer gel was electrically controlled in a pH modulator cell composed of a polypyrrole-coated platinum mesh electrode. A pH-sensitive micro-gel of methyl-methacrylate-acrylic acid co-polymer with a diameter of 80 nm in the shrunken state and 140 nm in the swollen state was prepared. The micro-gel volume was reversibly modulated by ca. 30% simultaneously in response to the electrically controlled pH of a solution. The transmittance of the micro-gel suspension was employed to monitor the dynamics of swelling by clarifying the relation of the transmittance to the diameter of the swollen micro-gel by absorbing water.",

author = "Takashi Sawai and Hiroaki Shinohara and Yoshihito Ikariyama and Masuo Aizawa",

year = "1991",

month = jan,

day = "25",

doi = "10.1016/0022-0728(91)80036-P",

language = "英語",

volume = "297",

pages = "399--407",

journal = "Journal of Electroanalytical Chemistry",

issn = "0022-0728",

publisher = "Elsevier BV",

number = "2",

}

TY - JOUR

T1 - Electrical control of the volume of pH-sensitive micro-gels

AU - Sawai, Takashi

AU - Shinohara, Hiroaki

AU - Ikariyama, Yoshihito

AU - Aizawa, Masuo

PY - 1991/1/25

Y1 - 1991/1/25

N2 - The volume of a pH-sensitive polymer gel was electrically controlled in a pH modulator cell composed of a polypyrrole-coated platinum mesh electrode. A pH-sensitive micro-gel of methyl-methacrylate-acrylic acid co-polymer with a diameter of 80 nm in the shrunken state and 140 nm in the swollen state was prepared. The micro-gel volume was reversibly modulated by ca. 30% simultaneously in response to the electrically controlled pH of a solution. The transmittance of the micro-gel suspension was employed to monitor the dynamics of swelling by clarifying the relation of the transmittance to the diameter of the swollen micro-gel by absorbing water.

AB - The volume of a pH-sensitive polymer gel was electrically controlled in a pH modulator cell composed of a polypyrrole-coated platinum mesh electrode. A pH-sensitive micro-gel of methyl-methacrylate-acrylic acid co-polymer with a diameter of 80 nm in the shrunken state and 140 nm in the swollen state was prepared. The micro-gel volume was reversibly modulated by ca. 30% simultaneously in response to the electrically controlled pH of a solution. The transmittance of the micro-gel suspension was employed to monitor the dynamics of swelling by clarifying the relation of the transmittance to the diameter of the swollen micro-gel by absorbing water.

UR - http://www.scopus.com/inward/record.url?scp=0006457034&partnerID=8YFLogxK

U2 - 10.1016/0022-0728(91)80036-P

DO - 10.1016/0022-0728(91)80036-P

M3 - 学術論文

AN - SCOPUS:0006457034

SN - 0022-0728

VL - 297

SP - 399

EP - 407

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 2

ER -

Electrical control of the volume of pH-sensitive micro-gels

Abstract

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this