Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Cotton Linter Crystallinity Variations Caused by Electron Beam Irradiation and Acid Treatment

물리화학적 처리에 의한 린터의 결정성 변화에 관한 연구

  • Park, Hee Jung (Dept. of Bio-based Materials, Coll. of Agri. and Life Sci., Chungnam National Univ.) ;
  • Sohn, Ha Neul (Dept. of Bio-based Materials, Coll. of Agri. and Life Sci., Chungnam National Univ.) ;
  • Seo, Yung Bum (Dept. of Bio-based Materials, Coll. of Agri. and Life Sci., Chungnam National Univ.)
  • 박희정 (충남대학교 환경소재공학과) ;
  • 손하늘 (충남대학교 환경소재공학과) ;
  • 서영범 (충남대학교 환경소재공학과)
  • Received : 2014.08.12
  • Accepted : 2014.08.20
  • Published : 2014.08.30
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Abstract

The crystallinity and molecular weight of cotton linter need to be controlled to be more easily dissolved in NMMO during manufacture of clothing fabrics. Electron beam irradiation and sulfuric acid treatment were used as pre-treatment to reduce molecular weight of cotton linter more efficiently, and after the pre-treatment, peroxide bleaching was followed in alkaline condition. After those processes, the crystalline indices of the cotton linters were measured by XRD method, and other properties such as their alpha cellulose contents and degree of polymerization were measured. It was found that the crystallinity index of cotton linter was decreased as the irradiation of electron beam increased while increased as the dose of sulfuric acid increased. These results strongly suggested that electron beam damaged the crystalline structure of the cellulose directly while sulfuric acid dissolved mostly non-crystalline area of the cellulose structure.

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References

  1. Kim, G. S., and Cha, J. Y., Cellulose and lyocell fibers, Tech. Trend Report, Korea Institute of Science and Technology Information (2003).
  2. Gang, T. J., and Cha, J. Y., Characterization and utilization of cellulose, Biological research information center, Biowave 9(7):1-11 (2007).
  3. Park, Y. C., and Kim, G. J., Cotton cellulose regenerated fiber, Fiber Technology and Industry 14(2):71-77 (2010).
  4. Park, H, J., Han, J. S., Son, H. N., and Seo, Y. B., Study of cotton linter pre-treatment process for producing high quality regenerated fibers for fabrics, Journal of Korea TAPPI 45(3):27-35 (2013). https://doi.org/10.7584/ktappi.2013.45.3.027
  5. Zhang, W., Okubayashi, S., and Thomas, B., Fibrillation tendency of cellulosic fibers: part3. Effects of alkali pretreatment of lyocell fiber, Carbohydrate Polymers 59(2):173-179 (2005). https://doi.org/10.1016/j.carbpol.2004.09.007
  6. Lee, S., Kim, J. W., and Jin, S. H., The Effect of chemical crosslinking in alkaline solution on fibrillation tendency and dyeability of lyocell fiber, Journal of the Korean oil chemists' society 27(2):168-174 (2010).
  7. Huong, M. B., Anelise, E., and Thomas, B., Pilling in cellulosic fabrics, Part 2: A study on kinetics of pilling in alkali-treated lyocell fabrics, Journal of Applied Polymer Science 109(6):3696-3703 (2008). https://doi.org/10.1002/app.28570
  8. Yue, Y., A Comparative study of cellulose I and II fibers and nano crystalls, MS thesis, School of renewable natural resources, Louisiana State Univ. (2011).
  9. Park, S. K., Baker, J. O., Himmel1, M. E., Parilla, P. A., and Johnson, D. K., Cellulose crystallinity index: measurement techniques and their impact on interpreting cellulase performance, Biotechnology for Biofuels 3(10) (2010).
  10. Kumar, A., Negi1, Y. S., Choudhary, V., and Bhardwaj, N. K., Characterization of cellulose nanocrystals produced by acid-hydrolysis from sugarcane bagasse as agro-waste, Journal of Materials Physics and Chemistry 2(1):1-8 (2014).
  11. Liu, Y., and Hu, H., X-ray Diffraction study of bamboo fibers treated with NaOH, Fibers and Polymers 9(6):735-739 (2008). https://doi.org/10.1007/s12221-008-0115-0
  12. Park, D. H., Lee, M. W., Jung, S. Y., and Seo, Y. B., Study of variations of cotton linter pulp characteristics by electron-beam treatment, Proceeding of Spring Conference of Korea TAPPI, Seoul, pp. 157-167 (2011).
  13. Seo, Y. B., Lee, M. W., Park, D. H., and Park, H. J., Use of a low-energy electron beam for degree of polymerization control of cotton linter, Industrial Engineering Chemistry Research 52(2):692-695 (2013). https://doi.org/10.1021/ie300521w
  14. Park, J. S., Development of electron beam radiation technology to regulate the molecular weight of cellulose materials, Master's thesis, Chungnam University (2011).
  15. Garrote, G., Domiguez, H., and Parajo, J. C., Autohydrolysis of corncob: study of non-isothermal operation for xylooligosaccharide production, Journal of Food Engineering 52(3):211-218 (2002). https://doi.org/10.1016/S0260-8774(01)00108-X
  16. Henniges, U., Hasani, M., Potthast, A., Westman, G., and Rosenau, T., Electron beam irradiation of cellulosic materials-opportunities and limitations, Materials 6:1584-1598 (2013). https://doi.org/10.3390/ma6051584