Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Effect of $\alpha$-cellulose content in pulps on esterification of cellulose

펄프에 함유된 $\alpha$-셀룰로오스의 함량이 셀룰로오스의 에스테르화반응에 미치는 영향

  • Lee, Soo (Dept. of Chemical Engineering, Changwon National University) ;
  • Park, Sang-Hee (Dept. of Chemical Engineering, Changwon National University) ;
  • Kim, Jin-Woo (Dept. of Chemical Engineering, Changwon National University)
  • 이수 (국립창원대학교 화공시스템공학과) ;
  • 박상희 (국립창원대학교 화공시스템공학과) ;
  • 김진우 (국립창원대학교 화공시스템공학과)
  • Published : 2009.12.31
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Abstract

Cellulose triacetate (CTA) was prepared from cotton linter and pulps which contain various contents of $\alpha$-cellulose. CTA which contains 2.8 of degree of substitution (DS) and 222 of degree of polymerization (DP) was obtained from V-81 pulp under the heterogeneous system. The DS was measured by the titration method, and the DP was obtained by measurement of viscosity. FT-IR spectometer (FT-IR 6300, JASCO) was used to analyze the chemical structure of raw materials and cellulose triacetate, and X-ray diffractometer (X-pert MPD PW3040, Philips) was used to confirm the crystal structure and to calculate the relative crystallinity index (RCI). As $\alpha$-cellulose content in pulp increased, the acetylation yield increased. Besides with a kind of pulp, it contains insoluble residue which was mainly formed due to the formation of glucomannan triacetate and xylan diacetate during the esterification.

Keywords

References

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