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Sunday, 24 July 2016

Effect of density on the hygroscopicity and surface characteristics of hybrid poplar compreg

Author
  • Minzhen Bao
  • Xianai Huang
  • Yahui Zhang
Abstract

The objective of this study is to investigate the relevance of hybrid poplar compreg density and its physical properties and surface characteristics, such as hygroscopicity, dimensional stability, wettability, roughness, surface energy, and porosity. The different desired densities (ranging from 0.6 to 1.2 g/cm3) of compreg were achieved using manufacturing processes with various parameters. The results indicated that the water absorption decreased and dimensional stability improved with the density increasing in the range of this study. In addition, the density was contributed to the reduction of the wettability and the roughness of compreg. Furthermore, the evaluation of the surface energy showed that the total surface free energy declined significantly due to the densification process. The high density reduced the apertures present in the vessels and the fiber cells and, consequently, decreased the total porosity of compreg. This, in turn, impeded the penetration of moisture into compreg and reduced its hygroscopicity.

References

  1. State Forestry Administration of China (2014) Statistical yearbook of forestry, Beijing
  2. 2.
    Bal BC, Bektaş İ, Mengeloğlu F, Karakuş K, Demir HÖ (2015) Some technological properties of poplar plywood panels reinforced with glass fiber fabric. Constr Build Mater 101:952–957CrossRef
  3. 3.
    Baharoğlu M, Nemli G, Sarı B, Birtürk T, Bardak S (2013) Effects of anatomical and chemical properties of wood on the quality of particleboard. Compos B 52:282–285CrossRef
  4. 4.
    Xing C, Zhang S, Deng J, Riedl B, Cloutier A (2006) Medium-density fiberboard performance as affected by wood fiber acidity, bulk density, and size distribution. Wood Sci Technol 40:637–646CrossRef
  5. 5.
    Fang CH, Cloutier A, Blanchet P, Koubaa A (2012) Densification of wood veneers combined with oil-heat treatment. Part II: hygroscopicity and mechanical properties. BioResources 7:925–935CrossRef
  6. 6.
    Wei P, Wang BJ, Zhou D, Dai C, Wang Q, Huang S (2013) Mechanical properties of poplar laminated veneer lumber modified by carbon fiber reinforced polymer. BioResources 8:4883–4898CrossRef
  7. 7.
    Fang CH, Mariotti N, Cloutier A, Koubaa A, Blanchet P (2011) Densification of wood veneers by compression combined with heat and steam. Eur J Wood Wood Prod 70:155–163CrossRef
  8. 8.
    Fang CH, Cloutier A, Blanchet P, Koubaa A (2011) Densification of wood veneers combined with oil-heat treatment. Part I: Dimensional stability. BioResources 6:373–385
  9. 9.
    Kutnar A (2007) Densification of wood. Zbornik gozdarstva in lesarstva 82:53–62
  10. 10.
    Navi P, Heger F (2004) Combined densification and thermo-hydro-mechanical processing of wood. MRS Bull 29:332–336CrossRef
  11. 11.
    Inoue M, Norimoto M (2008) Fixation of compressive deformation in wood by pre-steaming. J Trop For Sci 20:273–281
  12. 12.
    Sulaiman O, Salim N, Nordin NA, Hashim R, Ibrahim M, Sato M (2012) The potential of oil palm trunk biomass as an alternative source for compressed wood. BioResources 7:2688–2706CrossRef
  13. 13.
    Zhao Y, Wang Z, Iida I, Huang R, Lu J, Jiang J (2015) Studies on pre-treatment by compression for wood drying I: effects of compression ratio, compression direction and compression speed on the reduction of moisture content in wood. J Wood Sci 61:113–119CrossRef
  14. 14.
    Kamke FA, Sizemore Iii H (2008) Viscoelastic thermal compression of wood. US Patent Application No. 7.404.422
  15. 15.
    Gabrielli CP, Kamke FA (2010) Phenol-formaldehyde impregnation of densified wood for improved dimensional stability. Wood Sci Technol 44:95–104CrossRef
  16. 16.
    Shams MI, Yano H (2010) Compressive deformation of phenol formaldehyde (PF) resin-impregnated wood related to the molecular weight of resin. Wood Sci Technol 45:73–81CrossRef
  17. 17.
    Deka M, Saikia CN (2000) Chemical modification of wood with thermosetting resin: effect on dimensional stability and strength property. Bioresour Technol 73:179–181CrossRef
  18. 18.
    Shams MI, Yano H (2004) Compressive deformation of wood impregnated with low molecular weight phenol formaldehyde (PF) resin II: effects of processing parameters. J Wood Sci 50:343–350
  19. 19.
    Jennings JD, Zink-Sharp A, Frazier CE, Kamke FA (2006) Properties of compression-densified wood, Part II: surface energy. J Adhes Sci Technol 20:335–344CrossRef
  20. 20.
    Kutnar A, Kamke FA, Petrič M, Sernek M (2008) The influence of viscoelastic thermal compression on the chemistry and surface energetics of wood. Colloids Surf Physicochem Eng Aspects 329:82–86CrossRef
  21. 21.
    Chinese National Standard GB/T 17657 (2013) Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels. Standard Administration of China, Beijing
  22. 22.
    Chinese National Standard GB/T 30364 (2013) Bamboo scrimber flooring. Standard Administration of China, Beijing
  23. 23.
    Moura LFD, Hernández RE (2005) Evaluation of varnish coating performance for two surfacing methods on sugar maple wood. Wood Fiber Sci 37:355–366
  24. 24.
    Moura LFD, Hernández RE (2006) Effects of abrasive mineral, grit size and feed speed on the quality of sanded surfaces of sugar maple wood. Wood Sci Technol 40:517–530CrossRef
  25. 25.
    Ayrilmis N, Winandy JE (2009) Effects of post heat-treatment on surface characteristics and adhesive bonding performance of medium density fiberboard. Mater Manuf Processes 24:594–599CrossRef
  26. 26.
    Owens DK, Wendt RC (1969) Estimation of the surface free energy of polymers. J Appl Polym Sci 13:1741–1747CrossRef
  27. 27.
    Oss CJV (1995) Hydrophobicity of biosurfaces-origin, quantitative determination and interaction energies. Colloids Surf B 5:91–110CrossRef
  28. 28.
    Oss CJV (1993) Acid-base interfacial interactions in aqueous media. Colloids Surf A 78:1–49CrossRef
  29. 29.
    Wu S (1971) Calculation of interfacial tension in polymer systems. J Polym Sci Part C Polym Symp 34:19–30CrossRef
  30. 30.
    Hacke UG, Sperry JS, Pockman WT, Davis SD, McCulloh KA (2001) Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure. Oecologia 126:457–461CrossRef
  31. 31.
    Zhu RX, Yu WJ (2010) Effect of density on physical and mechanical properties of reconstituted small-sized bamboo fibrous sheet composite. Adv Mater Res 150:634–639CrossRef
  32. 32.
    Khalil HPSA, Bhat AH, Jawaid M, Amouzgar P, Ridzuan R, Said MR (2009) Agro-wastes: mechanical and physical properties of resin impregnated oil palm trunk core lumber. Polym Compos 31:638–644
  33. 33.
    Yu YL, Huang XA, Yu WJ (2014) High performance of bamboo-based fiber composites from long bamboo fiber bundles and phenolic resins. J Appl Polym Sci 131:1–8
  34. 34.
    Diouf PN, Stevanovic T, Cloutier A, Fang CH, Blanchet P, Koubaa A, Mariotti N (2011) Effects of thermo-hygro-mechanical densification on the surface characteristics of trembling aspen and hybrid poplar wood veneers. Appl Surf Sci 257:3558–3564CrossRef
  35. 35.
    Gindl M, Reiterer A, Sinn G, Stanzl-Tschegg SE (2004) Effects of surface ageing on wettability, surface chemistry, and adhesion of wood. Holz Roh Werkst 62:273–280CrossRef
  36. 36.
    Šernek M, Kamke FA, Glasser WG (2005) Comparative analysis of inactivated wood surfaces. Holzforschung 58:22–31
  37. 37.
    Gérardin P, Petrič M, Petrissans M, Lambert J, Ehrhrardt JJ (2007) Evolution of wood surface free energy after heat treatment. Polym Degrad Stab 92:653–657CrossRef
  38. 38.
    Faust TD, Rice JT (1986) Effects of veneer surface roughness on gluebond quality in southern pine plywood. For Prod J 36:57–62
  39. 39.
    Kutnar A, Kamke FA (2010) Compression of wood under saturated steam, superheated steam, and transient conditions at 150°C, 160°C, and 170°C. Wood Sci Technol 46:73–88CrossRef
  40. 40.
    Leclercq A, Riboux A, Jourez B (2001) Anatomical characteristics of tension wood and opposite wood in young inclined stems of poplar (Populus euramericana cv ‘Ghoy’). Iawa J 22:133–157CrossRef
  41. 41.
    Kutnar A, Kamke FA, Sernek M (2008) Density profile and morphology of viscoelastic thermal compressed wood. Wood Sci Technol 43:57–68CrossRef
  42. 42.
    Wan H, Kim MG (2006) Impregnation of southern pine wood and strands with low molecular weight phenol-formaldehyde resins for stabilization of oriented strandboard. Wood Fiber Sci 38:314–324
  43. 43.
    McBain J, Hopkins D (1925) On adhesives and adhesive action. J Phys Chem 29:188–204CrossRef
  44. 44.
    Standfest G, Kutnar A, Plank B, Petutschnigg A, Kamke FA, Dunky M (2013) Microstructure of viscoelastic thermal compressed (VTC) wood using computed microtomography. Wood Sci Technol 47:121–139CrossRef

For further details log on website :
http://link.springer.com/article/10.1007/s10086-016-1573-4

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