A 2,2,6,6-tetramehylpiperidine-1-oxy radical (TEMPO)-oxidized wood cellulose with sodium carboxylate groups was completely converted to individual TEMPO-oxidized cellulose nanofibrils with free carboxyl groups (TOCN-COOH) dispersed in water at pH 4.6. Self-standing films prepared by casting and drying of the TOCN-COOH/water dispersion were flexible and highly transparent. Fourier transform infrared (FT-IR) spectra and sodium content determination confirmed that the sodium carboxylate groups of TOCN-COONa were almost completely converted to free carboxyl groups in TOCN-COOH. The TOCN-COOH and TOCN-COONa films had similar densities and tensile strengths, but the former had lower moisture content, higher Young's modulus and lower elongation values than those of the latter. The oxygen permeability of the TOCN-COOH films was 0.049 mL mu m m(-2) day(-1) kPa(-1), which was clearly lower than that (15.5 mL mu m m(-2) day(-1) kPa(-1)) of poly(ethylene terephthalate) films. (C) 2010 Elsevier Ltd. All rights reserved.
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BIM Kemi AB, S-44303 Stenkullen, Sweden
Royal Inst Technol, Sch Chem Sci & Engn, Dept Fibre & Polymer Technol, S-10044 Stockholm, SwedenBIM Kemi AB, S-44303 Stenkullen, Sweden
Aulin, Christian
;
Gallstedt, Mikael
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Innventia AB, S-11486 Stockholm, SwedenBIM Kemi AB, S-44303 Stenkullen, Sweden
Gallstedt, Mikael
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Lindstrom, Tom
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Innventia AB, S-11486 Stockholm, SwedenBIM Kemi AB, S-44303 Stenkullen, Sweden
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Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
Fukuzumi, Hayaka
;
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Saito, Tsuguyuki
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Wata, Tadahisa
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Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
Wata, Tadahisa
;
Kumamoto, Yoshiaki
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Kao Corp, Global R&D Proc Dev, Ichikai, Tochigi 3213497, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
Kumamoto, Yoshiaki
;
Isogai, Akira
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Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
机构:
BIM Kemi AB, S-44303 Stenkullen, Sweden
Royal Inst Technol, Sch Chem Sci & Engn, Dept Fibre & Polymer Technol, S-10044 Stockholm, SwedenBIM Kemi AB, S-44303 Stenkullen, Sweden
Aulin, Christian
;
Gallstedt, Mikael
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Innventia AB, S-11486 Stockholm, SwedenBIM Kemi AB, S-44303 Stenkullen, Sweden
Gallstedt, Mikael
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Lindstrom, Tom
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Innventia AB, S-11486 Stockholm, SwedenBIM Kemi AB, S-44303 Stenkullen, Sweden
机构:
Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
Fukuzumi, Hayaka
;
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Saito, Tsuguyuki
;
Wata, Tadahisa
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Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
Wata, Tadahisa
;
Kumamoto, Yoshiaki
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Kao Corp, Global R&D Proc Dev, Ichikai, Tochigi 3213497, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan
Kumamoto, Yoshiaki
;
Isogai, Akira
论文数: 0引用数: 0
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Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, JapanUniv Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Tokyo 1138657, Japan