Analysis of surface molecular motion of amorphous polymeric solids on the basis of scanning force microscopy and X-ray photoelectron spectroscopy

Tisato Kajiyama, Keiji Tanaka, Atsushi Takahara

研究成果: ジャーナルへの寄稿記事

5 引用 (Scopus)

抄録

Surface molecular motions of amorphous polymeric solids have been directly measured on the basis of lateral force microscopic (LFM), scanning viscoelasticity microscopic (SVM) and differential X-ray photoelectron spectroscopic (D-XPS) studies. SVM and LFM measurements of monodisperse polystyrene (PS) films revealed that, in the case of the number-average molecular weight, Mn less than ca. 30k, the surface was in a glass-rubber transition state at room temperature even though the bulk glass transition temperature, Tg was far above room temperature. The active molecular motion at the polymeric solid surface can be interpreted mainly in terms of excess free volume near the surface region induced by the surface segregation of chain end groups, which was confirmed by dynamic secondary ion mass spectroscopy (DSIMS). D-XPS measurement revealed that the surface Tg for the poly(styrene-block-methyl methacrylate) diblock copolymer films increased gradually with an increase in depth from the air/polymer interface.

元の言語英語
ページ(範囲)132-137
ページ数6
ジャーナルProceedings of the Japan Academy Series B: Physical and Biological Sciences
73
発行部数7
DOI
出版物ステータス出版済み - 9 1997

Fingerprint

X-ray photoelectron spectroscopy
Photoelectron Spectroscopy
atomic force microscopy
Atomic Force Microscopy
Glass
X-Rays
photoelectron spectroscopy
Secondary Ion Mass Spectrometry
microscopy
Temperature
scanning
Transition Temperature
Polystyrenes
Rubber
viscoelasticity
Polymers
x rays
Molecular Weight
Air
polystyrene

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Physics and Astronomy(all)

これを引用

@article{370b25c3778345339668bba099fe0c80,
title = "Analysis of surface molecular motion of amorphous polymeric solids on the basis of scanning force microscopy and X-ray photoelectron spectroscopy",
abstract = "Surface molecular motions of amorphous polymeric solids have been directly measured on the basis of lateral force microscopic (LFM), scanning viscoelasticity microscopic (SVM) and differential X-ray photoelectron spectroscopic (D-XPS) studies. SVM and LFM measurements of monodisperse polystyrene (PS) films revealed that, in the case of the number-average molecular weight, Mn less than ca. 30k, the surface was in a glass-rubber transition state at room temperature even though the bulk glass transition temperature, Tg was far above room temperature. The active molecular motion at the polymeric solid surface can be interpreted mainly in terms of excess free volume near the surface region induced by the surface segregation of chain end groups, which was confirmed by dynamic secondary ion mass spectroscopy (DSIMS). D-XPS measurement revealed that the surface Tg for the poly(styrene-block-methyl methacrylate) diblock copolymer films increased gradually with an increase in depth from the air/polymer interface.",
author = "Tisato Kajiyama and Keiji Tanaka and Atsushi Takahara",
year = "1997",
month = "9",
doi = "10.2183/pjab.73.132",
language = "English",
volume = "73",
pages = "132--137",
journal = "Proceedings of the Japan Academy Series B: Physical and Biological Sciences",
issn = "0386-2208",
publisher = "Japan Academy",
number = "7",

}

TY - JOUR

T1 - Analysis of surface molecular motion of amorphous polymeric solids on the basis of scanning force microscopy and X-ray photoelectron spectroscopy

AU - Kajiyama, Tisato

AU - Tanaka, Keiji

AU - Takahara, Atsushi

PY - 1997/9

Y1 - 1997/9

N2 - Surface molecular motions of amorphous polymeric solids have been directly measured on the basis of lateral force microscopic (LFM), scanning viscoelasticity microscopic (SVM) and differential X-ray photoelectron spectroscopic (D-XPS) studies. SVM and LFM measurements of monodisperse polystyrene (PS) films revealed that, in the case of the number-average molecular weight, Mn less than ca. 30k, the surface was in a glass-rubber transition state at room temperature even though the bulk glass transition temperature, Tg was far above room temperature. The active molecular motion at the polymeric solid surface can be interpreted mainly in terms of excess free volume near the surface region induced by the surface segregation of chain end groups, which was confirmed by dynamic secondary ion mass spectroscopy (DSIMS). D-XPS measurement revealed that the surface Tg for the poly(styrene-block-methyl methacrylate) diblock copolymer films increased gradually with an increase in depth from the air/polymer interface.

AB - Surface molecular motions of amorphous polymeric solids have been directly measured on the basis of lateral force microscopic (LFM), scanning viscoelasticity microscopic (SVM) and differential X-ray photoelectron spectroscopic (D-XPS) studies. SVM and LFM measurements of monodisperse polystyrene (PS) films revealed that, in the case of the number-average molecular weight, Mn less than ca. 30k, the surface was in a glass-rubber transition state at room temperature even though the bulk glass transition temperature, Tg was far above room temperature. The active molecular motion at the polymeric solid surface can be interpreted mainly in terms of excess free volume near the surface region induced by the surface segregation of chain end groups, which was confirmed by dynamic secondary ion mass spectroscopy (DSIMS). D-XPS measurement revealed that the surface Tg for the poly(styrene-block-methyl methacrylate) diblock copolymer films increased gradually with an increase in depth from the air/polymer interface.

UR - http://www.scopus.com/inward/record.url?scp=0039078279&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0039078279&partnerID=8YFLogxK

U2 - 10.2183/pjab.73.132

DO - 10.2183/pjab.73.132

M3 - Article

AN - SCOPUS:0039078279

VL - 73

SP - 132

EP - 137

JO - Proceedings of the Japan Academy Series B: Physical and Biological Sciences

JF - Proceedings of the Japan Academy Series B: Physical and Biological Sciences

SN - 0386-2208

IS - 7

ER -