Observation of collapse and swelling of thermosensitive poly(N-isopropylacrylamide) brashes grafted on SiO2

Chie Yahiro; Masahiko Annaka; Motoyasu Kobayashi; Atsushi Takahara; Akihiko Kikuchi; Teruo Okano

Observation of collapse and swelling of thermosensitive poly(N-isopropylacrylamide) brashes grafted on SiO₂

Chie Yahiro, Masahiko Annaka, Motoyasu Kobayashi, Atsushi Takahara, Akihiko Kikuchi, Teruo Okano

Department of Materials Science and Technology

Research output: Contribution to conference › Paper › peer-review

Abstract

Thermosensitve poly(N-isopropylacrylamide) (PNIPAM) brushes grafted onto SiO₂-coated quartz crystal or glass surface were prepared with a surface-immobilized initiator. The microstructure of PNIPAM layer was examined by XPS, and AFM. Using QCM, we investigated the collapse and swelling of the brushes in water in real time. Frequency of PNIPAM brushes were found to gradually change throughout a temperature range 20-40°C, indicating that the PNIPAM brushes undergo a continuous transition. The nonuniformity and stretching of PNIPAM brushes as well as the cooperativity between collapse and dehydration transitions are thought to be responsible for the continuity.

Original language	English
Pages	1022
Number of pages	1
Publication status	Published - 2006
Event	55th SPSJ Annual Meeting - Nagoya, Japan Duration: 24 May 2006 → 26 May 2006

Conference

Conference	55th SPSJ Annual Meeting
Country/Territory	Japan
City	Nagoya
Period	24/05/06 → 26/05/06

Keywords

AFM
Coil-to-brush transition
Poly(N-isopropylacrylamide)
Polymer brush
QCM

Cite this

@conference{e6be1bf4dabf4f7fb6ff70bb9b759027,

title = "Observation of collapse and swelling of thermosensitive poly(N-isopropylacrylamide) brashes grafted on SiO2",

abstract = "Thermosensitve poly(N-isopropylacrylamide) (PNIPAM) brushes grafted onto SiO2-coated quartz crystal or glass surface were prepared with a surface-immobilized initiator. The microstructure of PNIPAM layer was examined by XPS, and AFM. Using QCM, we investigated the collapse and swelling of the brushes in water in real time. Frequency of PNIPAM brushes were found to gradually change throughout a temperature range 20-40°C, indicating that the PNIPAM brushes undergo a continuous transition. The nonuniformity and stretching of PNIPAM brushes as well as the cooperativity between collapse and dehydration transitions are thought to be responsible for the continuity.",

keywords = "AFM, Coil-to-brush transition, Poly(N-isopropylacrylamide), Polymer brush, QCM",

author = "Chie Yahiro and Masahiko Annaka and Motoyasu Kobayashi and Atsushi Takahara and Akihiko Kikuchi and Teruo Okano",

year = "2006",

language = "English",

pages = "1022",

note = "55th SPSJ Annual Meeting ; Conference date: 24-05-2006 Through 26-05-2006",

}

TY - CONF

T1 - Observation of collapse and swelling of thermosensitive poly(N-isopropylacrylamide) brashes grafted on SiO2

AU - Yahiro, Chie

AU - Annaka, Masahiko

AU - Kobayashi, Motoyasu

AU - Takahara, Atsushi

AU - Kikuchi, Akihiko

AU - Okano, Teruo

PY - 2006

Y1 - 2006

N2 - Thermosensitve poly(N-isopropylacrylamide) (PNIPAM) brushes grafted onto SiO2-coated quartz crystal or glass surface were prepared with a surface-immobilized initiator. The microstructure of PNIPAM layer was examined by XPS, and AFM. Using QCM, we investigated the collapse and swelling of the brushes in water in real time. Frequency of PNIPAM brushes were found to gradually change throughout a temperature range 20-40°C, indicating that the PNIPAM brushes undergo a continuous transition. The nonuniformity and stretching of PNIPAM brushes as well as the cooperativity between collapse and dehydration transitions are thought to be responsible for the continuity.

AB - Thermosensitve poly(N-isopropylacrylamide) (PNIPAM) brushes grafted onto SiO2-coated quartz crystal or glass surface were prepared with a surface-immobilized initiator. The microstructure of PNIPAM layer was examined by XPS, and AFM. Using QCM, we investigated the collapse and swelling of the brushes in water in real time. Frequency of PNIPAM brushes were found to gradually change throughout a temperature range 20-40°C, indicating that the PNIPAM brushes undergo a continuous transition. The nonuniformity and stretching of PNIPAM brushes as well as the cooperativity between collapse and dehydration transitions are thought to be responsible for the continuity.

KW - AFM

KW - Coil-to-brush transition

KW - Poly(N-isopropylacrylamide)

KW - Polymer brush

KW - QCM

UR - http://www.scopus.com/inward/record.url?scp=33749679989&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33749679989

SP - 1022

T2 - 55th SPSJ Annual Meeting

Y2 - 24 May 2006 through 26 May 2006

ER -

Observation of collapse and swelling of thermosensitive poly(N-isopropylacrylamide) brashes grafted on SiO₂

Abstract

Conference

Keywords

Other files and links

Fingerprint

Cite this