Functionalization of a Polymer Using Nanoparticles Immobilized in Supercritical Carbon Dioxide
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概要
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We demonstrated the immobilization of functional nanoparticles onto a poly(ethylene terephthalate) (PET) polymer using supercritical CO2 (SCCO2). Gold nanoparticles (AuNPs) and cadmium sulfide nanoparticles (CdSNPs) were prepared in accordance with a previously reported method. Both of the PET polymer and the nanoparticle dispersion solution were treated in SCCO2. Treatment was carried out at various temperatures and pressures. The optical properties of the treated films were observed by UV–visible (vis) absorption spectroscopy or emission spectroscopy. For the UV–vis absorption spectra of the PET films treated with AuNPs of ca. 3 nm diameter (3-AuNPs), a surface plasmon band appeared at about 550 nm, which characterized gold nanoparticles or its aggregates. For the emission spectra of the PET films treated with CdSNPs of ca. 4 nm diameter (4-CdSNPs), an emission peak appeared at about 600 nm. We found that the PET films could be functionalized using 3-AuNPs or 4-CdSNPs immobilized in SCCO2 (50 °C, 20 MPa, 2 h).
- 2009-06-25
著者
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Sawada Tsuyoshi
Department Of Applied Chemistry And Biochemistry Graduate School Of Science And Technology Kumamoto
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Kuwahara Yutaka
Department Of Applied Chemistry And Biochemistry Graduate School Of Science And Technology Kumamoto
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Goto Motonobu
Bioelectrics Research Center Kumamoto University
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Sasaki Mitsuru
Department Of Agrobioscience Graduate School Of Agricultural Science Kobe University
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Iwanaga Tomoki
Department Of Applied Chemistry And Biochemistry Graduate School Of Science And Technology Kumamoto
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Morita Minoru
Department Of Animal Science Faculty Of Agriculture Tohoku University
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Tanaka Akio
Department Of Applied Biological Chemistry Faculty Of Agriculture Shizuoka University
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Iwanaga Tomoki
Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Nagami Tomohito
Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Kumamaru Kaoru
Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Sato Masaki
CHUBU Electric Power Co., Inc., 20-1 Kitasekiyama, Odaka-cho, Midori-ku, Nagoya 459-8522, Japan
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Kumamaru Kaoru
Department of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
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Sawada Tsuyoshi
Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Goto Motonobu
Bioelectrics Research Center, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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Sasaki Mitsuru
Department of Applied Chemistry and Biochemistry, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan
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