Surface thermomechanical and glass transition temperature measurements of polymeric solids

Tisato Kajiyama, Keiji Tanaka, Atsushi Takahara

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

The surface molecular motion of polymeric solids was investigated on the basis of scanning force microscopic and temperature-dependent X-ray photoelectron spectroscopic measurements. The surface of the monodisperse polystyrene films was in a glass-rubber transition state even at 293 K in the case of number-average molecular weight less than ca. 30k. The surface glass transition temperature, Tgs for the symmetric poly(styrene-block-methyl methacrylate) diblock copolymer films were much lower than those for the bulk samples. A remarkable depression of Tg at the air-polymer interface was explained by the surface localization of chain end groups.

本文言語英語
ページ(範囲)677-682
ページ数6
ジャーナルMacromolecular Symposia
118
DOI
出版ステータス出版済み - 1 1 1997

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 有機化学
  • ポリマーおよびプラスチック
  • 材料化学

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