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Official Journal of the Japan Wood Research Society

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Preparation of board-like moldings from composites of isolated lignins and waste paper II: effect of inorganic salt addition on board performance and evaluation of practical use of MDF

Abstract

Board-shaped composites with medium density (MDF) were prepared from isolated lignins and waste newspaper, in addition to preparation of the composites with high density (HB). The board properties of both composites concerning bending strength and water resistance were improved by the addition of hardwood acetic acid lignin (HAL). The internal bond strength and water resistance of MDF, in particular the degree of thickness swelling (TS), were also improved by prolonged molding time. Adding inorganic salts contributed to the improvement of TS. The effect depended on the charge of the cation. Considering practical utilization of lignin-based MDF as a structural material, its performance was evaluated by combination of the single-shear test of nailed joints and the modulus of rigidity. As a result, this MDF had sufficient strength to be utilized as an internal shear wall material. Therefore, lignin can be considered as an alternative to conventional adhesives for the production of boards such as HB and MDF.

References

  1. IS Goldstein (1975) ArticleTitlePotential for converting wood into plastics Science 189 847–852 Occurrence Handle1:CAS:528:DyaE2MXls1Kjsrk%3D Occurrence Handle10.1126/science.189.4206.847 Occurrence Handle17812517

    Article  CAS  PubMed  Google Scholar 

  2. HH Nimz (1983) Lignin-based wood adhesives A Pizzi (Eds) Wood adhesives: chemistry and technology Marcel Dekker New York 247–288

    Google Scholar 

  3. G Vázquez C Rodríguez-Bona S Freire J González-Álvarez G Antorrena (1999) ArticleTitleAcetosolv pine lignin as copolymer in resins for manufacture of exterior grade plywoods Bioresource Technol 70 209–214 Occurrence Handle10.1016/S0960-8524(99)00020-6

    Article  Google Scholar 

  4. Kawano T (1998) Board production using Gramineae lignin. Japan Patent H10-305409

  5. J Nemoto Y Uraki Y Sano (2003) ArticleTitlePreparation of board-like moldings from composites of isolated lignins and waste paper (in Japanese) Mokuzai Gakkaishi 49 287–292 Occurrence Handle1:CAS:528:DC%2BD3sXmvFWgsbw%3D

    CAS  Google Scholar 

  6. S Kubo Y Uraki Y Sano (1996) ArticleTitleThermomechanical analysis of isolated lignins Holzforschung 50 144–150 Occurrence Handle1:CAS:528:DyaK28XisFOmurs%3D Occurrence Handle10.1515/hfsg.1996.50.2.144

    Article  CAS  Google Scholar 

  7. Y Uraki S Kubo N Nigo Y Sano T Sasaya (1995) ArticleTitlePreparation of carbon fibers from organosolv lignin obtained by aqueous acetic acid pulping Holzforschung 49 343–350 Occurrence Handle1:CAS:528:DyaK2MXnsVSgs7w%3D Occurrence Handle10.1515/hfsg.1995.49.4.343

    Article  CAS  Google Scholar 

  8. Y Uraki S Kubo H Kurakami Y Sano (1997) ArticleTitleActivated carbon fibers from acetic acid lignin Holzforschung 51 188–192 Occurrence Handle1:CAS:528:DyaK2sXltFOqu74%3D Occurrence Handle10.1515/hfsg.1997.51.2.188

    Article  CAS  Google Scholar 

  9. Y Uraki S Kubo Y Sano (2002) ArticleTitlePreparation of activated carbon moldings from the mixture of waste newspaper and isolated lignins—mechanical strength of thin sheet and adsorption property J Wood Sci 48 521–526 Occurrence Handle1:CAS:528:DC%2BD3sXmsFyntQ%3D%3D Occurrence Handle10.1007/BF00766650

    Article  CAS  Google Scholar 

  10. Y Uraki S Kubo Y Sano T Sasaya (1991) ArticleTitleCooking of hardwoods with organosolv pulping in aqueous acetic acid containing sulfuric acid at atmospheric pressure. Kami pa Gikyoshi 45 1018–1024 Occurrence Handle1:CAS:528:DyaK38XhsFCjtb8%3D

    CAS  Google Scholar 

  11. K Yanaga Y Sasaki T Hirai (2001) ArticleTitleEstimation of allowable resistance of nailed shear walls considering the variance of nailed joint resistance (in Japanese) Mokuzai Gakkaishi 47 242–251

    Google Scholar 

  12. K Yanaga Y Sasaki T Hirai (2002) ArticleTitleEstimation of shear resistance of nailed shear walls considering vertical loads and pull-up resistance of stud-bottom plate joints (in Japanese) Mokuzai Gakkaishi 48 152–159

    Google Scholar 

  13. The Editorial Committee of the Guide for Structural Design of Light Timber Frame Construction (2002) In: The guide for structural design of light timber frame construction. Japan 2 × 4 Home Builders Association pp 214–216

  14. AM Scallan J Grignon (1979) ArticleTitleThe effect of cations on pulp and paper properties Svensk Papperstidn 82 40–47 Occurrence Handle1:CAS:528:DyaE1MXhslSgu7c%3D

    CAS  Google Scholar 

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Correspondence to Yasumitsu Uraki.

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Uraki, Y., Nemoto, J., Yanaga, K. et al. Preparation of board-like moldings from composites of isolated lignins and waste paper II: effect of inorganic salt addition on board performance and evaluation of practical use of MDF. J Wood Sci 51, 589–594 (2005). https://doi.org/10.1007/s10086-004-0695-2

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