Surface relaxation behavior of proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) films

Xiqun Jiang, Keiji Tanaka, Atsushi Sakai, Atsushi Takahara, Tisato Kajiyama

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) (P2VP-H and P2VP-C 2 C 8 F ) were anionically synthesized. Surface molecular motions of P2VP-H and P2VP-C 2 C 8 F films prepared on hydrophilic silicon wafers were examined by lateral force microscopy (LFM). Surface glass transition temperature, T g s , of P2VP-C 2 C 8 F was lower than that of P2VP-H probably due to the difference of the surface concentration of chain ends. Also, both T g s values were lower than each corresponding bulk glass transition temperature, T g b . Surface molecular motion in an ultrathin film was less activated than that of the thick film, although T g s in the ultrathin film remained lower than T g b . In the case of ultrathin films, the surface/interface area to volume ratio becomes larger, and thus the thermal molecular motion at the surface is affected by that at the polymer/substrate interface. Since molecular mobility on the substrate might be restricted owing to the polar attractive interaction between polymer segments and the hydrophilic substrate, the activation of surface molecular motion apparently turns weak for such an ultrathin film.

元の言語英語
記事番号5894
ページ(範囲)8959-8964
ページ数6
ジャーナルpolymer
42
発行部数21
DOI
出版物ステータス出版済み - 1 1 2001

Fingerprint

Surface relaxation
Protons
Ultrathin films
Polymers
Substrates
poly(2-vinylpyridine)
Silicon wafers
Thick films
Microscopic examination
Chemical activation

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

これを引用

Surface relaxation behavior of proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) films. / Jiang, Xiqun; Tanaka, Keiji; Sakai, Atsushi; Takahara, Atsushi; Kajiyama, Tisato.

:: polymer, 巻 42, 番号 21, 5894, 01.01.2001, p. 8959-8964.

研究成果: ジャーナルへの寄稿記事

Jiang, Xiqun ; Tanaka, Keiji ; Sakai, Atsushi ; Takahara, Atsushi ; Kajiyama, Tisato. / Surface relaxation behavior of proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) films. :: polymer. 2001 ; 巻 42, 番号 21. pp. 8959-8964.
@article{d161641219b94751964765d4f6dcdfd1,
title = "Surface relaxation behavior of proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) films",
abstract = "Proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) (P2VP-H and P2VP-C 2 C 8 F ) were anionically synthesized. Surface molecular motions of P2VP-H and P2VP-C 2 C 8 F films prepared on hydrophilic silicon wafers were examined by lateral force microscopy (LFM). Surface glass transition temperature, T g s , of P2VP-C 2 C 8 F was lower than that of P2VP-H probably due to the difference of the surface concentration of chain ends. Also, both T g s values were lower than each corresponding bulk glass transition temperature, T g b . Surface molecular motion in an ultrathin film was less activated than that of the thick film, although T g s in the ultrathin film remained lower than T g b . In the case of ultrathin films, the surface/interface area to volume ratio becomes larger, and thus the thermal molecular motion at the surface is affected by that at the polymer/substrate interface. Since molecular mobility on the substrate might be restricted owing to the polar attractive interaction between polymer segments and the hydrophilic substrate, the activation of surface molecular motion apparently turns weak for such an ultrathin film.",
author = "Xiqun Jiang and Keiji Tanaka and Atsushi Sakai and Atsushi Takahara and Tisato Kajiyama",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0032-3861(01)00384-6",
language = "English",
volume = "42",
pages = "8959--8964",
journal = "Polymer",
issn = "0032-3861",
publisher = "Elsevier BV",
number = "21",

}

TY - JOUR

T1 - Surface relaxation behavior of proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) films

AU - Jiang, Xiqun

AU - Tanaka, Keiji

AU - Sakai, Atsushi

AU - Takahara, Atsushi

AU - Kajiyama, Tisato

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) (P2VP-H and P2VP-C 2 C 8 F ) were anionically synthesized. Surface molecular motions of P2VP-H and P2VP-C 2 C 8 F films prepared on hydrophilic silicon wafers were examined by lateral force microscopy (LFM). Surface glass transition temperature, T g s , of P2VP-C 2 C 8 F was lower than that of P2VP-H probably due to the difference of the surface concentration of chain ends. Also, both T g s values were lower than each corresponding bulk glass transition temperature, T g b . Surface molecular motion in an ultrathin film was less activated than that of the thick film, although T g s in the ultrathin film remained lower than T g b . In the case of ultrathin films, the surface/interface area to volume ratio becomes larger, and thus the thermal molecular motion at the surface is affected by that at the polymer/substrate interface. Since molecular mobility on the substrate might be restricted owing to the polar attractive interaction between polymer segments and the hydrophilic substrate, the activation of surface molecular motion apparently turns weak for such an ultrathin film.

AB - Proton- and perfluoroalkyl-terminated poly(2-vinylpyridine) (P2VP-H and P2VP-C 2 C 8 F ) were anionically synthesized. Surface molecular motions of P2VP-H and P2VP-C 2 C 8 F films prepared on hydrophilic silicon wafers were examined by lateral force microscopy (LFM). Surface glass transition temperature, T g s , of P2VP-C 2 C 8 F was lower than that of P2VP-H probably due to the difference of the surface concentration of chain ends. Also, both T g s values were lower than each corresponding bulk glass transition temperature, T g b . Surface molecular motion in an ultrathin film was less activated than that of the thick film, although T g s in the ultrathin film remained lower than T g b . In the case of ultrathin films, the surface/interface area to volume ratio becomes larger, and thus the thermal molecular motion at the surface is affected by that at the polymer/substrate interface. Since molecular mobility on the substrate might be restricted owing to the polar attractive interaction between polymer segments and the hydrophilic substrate, the activation of surface molecular motion apparently turns weak for such an ultrathin film.

UR - http://www.scopus.com/inward/record.url?scp=0035973978&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035973978&partnerID=8YFLogxK

U2 - 10.1016/S0032-3861(01)00384-6

DO - 10.1016/S0032-3861(01)00384-6

M3 - Article

AN - SCOPUS:0035973978

VL - 42

SP - 8959

EP - 8964

JO - Polymer

JF - Polymer

SN - 0032-3861

IS - 21

M1 - 5894

ER -