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Ab initio studies of the crystal structure of cellulose triacetate I

  • Takanori Kobayashi (a1), Daichi Hayakawa (a1), Tegshjargal Khishigjargal (a1) and Kazuyoshi Ueda (a1)

Abstract

We have investigated crystal structure of cellulose triacetate I (CTA I) by using first principal density functional theory (DFT) calculation. The results are in good agreement with the experimentally obtained crystal structure when we used the cutoff energy higher than 70 Ry. However, the cell parameters calculated without dispersion correction are overestimated the results compared to the experimental value. Contrary, with the inclusion of dispersion correction, the cell parameters were calculated slightly smaller than the experimental one. The smaller cell parameter can be considered to be reasonable because the effect of the thermal expansion is not included in the density functional calculation. That is, inclusion of the dispersion term is important in the calculation of this crystal structure of CTA I.

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Ab initio studies of the crystal structure of cellulose triacetate I

  • Takanori Kobayashi (a1), Daichi Hayakawa (a1), Tegshjargal Khishigjargal (a1) and Kazuyoshi Ueda (a1)

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