Molecular aggregation state of ultrathin polar polymer films

Ken Kojio, Mutsuhisa Furukawa

研究成果: 会議への寄与タイプ論文

抄録

Polyurethane (PU) is one of the most important polar polymers. This strong polarity might affect the aggregation structure for the PU ultrathin films because the effect of surface and interface of the ultrathin films is quite effective with decreasing film thickness. In this study, we investigated the relationship between aggregation structure and film thickness using atomic force microscope (AFM) and Fourier transform infrared (FT-IR) spectroscopy. The PU was synthesized with poly(oxytetramethylene) glycol (PTMG), 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) by a prepolymer method. The PU ultrathin films were prepared onto a hydrophilic silicon wafer from the PU tetrahydrofuran solution by a spin coating method. Microphase-separated structure was clearly observed for all PU films, which the hard segment domains were surrounded by the soft segment matrix. For the thick film (>200 nm), the size of the hard segment domains was ca. 20 nm. This is almost same as bulk one. On the other hand, the domain size for the thin film with 8 nm thickness was ca. 10 nm. This seems to be simply related to a decreasing space. For the first time, we successfully obtained the experimental data, which the phase-separated domain size decreased with decreasing film thickness.

元の言語英語
ページ67-69
ページ数3
出版物ステータス出版済み - 10 18 2006
イベント55th SPSJ Annual Meeting - Nagoya, 日本
継続期間: 5 24 20065 26 2006

その他

その他55th SPSJ Annual Meeting
日本
Nagoya
期間5/24/065/26/06

Fingerprint

Plastic films
Polymer films
Phase separation
Molecular structure
Polyurethanes
Fourier transform infrared spectroscopy
Molecular dynamics
Atomic force microscopy
Agglomeration
Thin films
Ultrathin films
Film thickness
Spin coating
Glycols
Silicon wafers
Thick films
Microscopes
Polymers

All Science Journal Classification (ASJC) codes

  • Engineering(all)

これを引用

Kojio, K., & Furukawa, M. (2006). Molecular aggregation state of ultrathin polar polymer films. 67-69. 論文発表場所 55th SPSJ Annual Meeting, Nagoya, 日本.

Molecular aggregation state of ultrathin polar polymer films. / Kojio, Ken; Furukawa, Mutsuhisa.

2006. 67-69 論文発表場所 55th SPSJ Annual Meeting, Nagoya, 日本.

研究成果: 会議への寄与タイプ論文

Kojio, K & Furukawa, M 2006, 'Molecular aggregation state of ultrathin polar polymer films' 論文発表場所 55th SPSJ Annual Meeting, Nagoya, 日本, 5/24/06 - 5/26/06, pp. 67-69.
Kojio K, Furukawa M. Molecular aggregation state of ultrathin polar polymer films. 2006. 論文発表場所 55th SPSJ Annual Meeting, Nagoya, 日本.
Kojio, Ken ; Furukawa, Mutsuhisa. / Molecular aggregation state of ultrathin polar polymer films. 論文発表場所 55th SPSJ Annual Meeting, Nagoya, 日本.3 p.
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