Characterizations of hyperbranched polymer thin films

Keiichi Akabori, Keiji Tanaka, Toshihiko Nagamura, Akihiro Tanaka, Masaaki Ozawa

Research output: Contribution to conferencePaper

Abstract

Thermo-mechanical properties in hyperbranched polystyrene (HBPS) films were studied by dynamic mechanical analysis (DMA). The samples for DMA were spin-coated from toluene solutions onto polyimide film (PI) substrates. In case of the proton-terminated HBPS (HBPS-H) film with the thickness of about 400 nm, the αa-absorption peak corresponding to the segmental motion appeared at a temperature lower than that for the corresponding linear PS film due mainly to the large number density of chain ends. As the HBPS-H film became thinner than about 70 nm, the αa-absorption peak became broader than that for the thicker one because of the contribution from the free surface and the substrate interface. Moreover, the αa-relaxation temperature for the HBPS films with dithiocarbamated end groups further decreased, indicating that thermal molecular motion in HBPS films could be controlled by chain end chemistry.

Original languageEnglish
Pages3347-3348
Number of pages2
Publication statusPublished - Dec 1 2006
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: Sep 20 2006Sep 22 2006

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period9/20/069/22/06

Fingerprint

Polymer films
Polystyrenes
Thin films
Dynamic mechanical analysis
Substrates
Polyimides
Toluene
Protons
Mechanical properties
Hydrogen
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Akabori, K., Tanaka, K., Nagamura, T., Tanaka, A., & Ozawa, M. (2006). Characterizations of hyperbranched polymer thin films. 3347-3348. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.

Characterizations of hyperbranched polymer thin films. / Akabori, Keiichi; Tanaka, Keiji; Nagamura, Toshihiko; Tanaka, Akihiro; Ozawa, Masaaki.

2006. 3347-3348 Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.

Research output: Contribution to conferencePaper

Akabori, K, Tanaka, K, Nagamura, T, Tanaka, A & Ozawa, M 2006, 'Characterizations of hyperbranched polymer thin films', Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan, 9/20/06 - 9/22/06 pp. 3347-3348.
Akabori K, Tanaka K, Nagamura T, Tanaka A, Ozawa M. Characterizations of hyperbranched polymer thin films. 2006. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.
Akabori, Keiichi ; Tanaka, Keiji ; Nagamura, Toshihiko ; Tanaka, Akihiro ; Ozawa, Masaaki. / Characterizations of hyperbranched polymer thin films. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.2 p.
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