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Effect of Microwave Treatment on Hydrophilicity and Bonding Strength Properties of Woods

Year 2020, Volume: 22 Issue: 2, 465 - 471, 15.08.2020
https://doi.org/10.24011/barofd.700992

Abstract

It was found that Microwave (MW) assisted wood preservative (WP) treatments effects further lowering swelling and water absortion values for selected hardwoods and softwood species in this study. It is clear that the post MW treated woods effects further reaction or bonding to hydroxyl group (–C-OH) of cell wall constituents to create further water repellent (hyrophobic) surfaces with WP applications. However, the water absorptiveness was found to be lowered extensively on all WP treated samples. The further lowering water absortiveness values calculated for all post MW treated samples. The calculated values have indicated approximately further reducing of 14.9% for Eucalyptus, 6.9% for Poplar, 6.8% Chestnut samples, 7.9% for Cedrus and 18.1% for Pine samples respectively. It has also found that MW treated samples clear evidence on increasing bonding strength for all post MW treated wood species. The MW treatments effects increasing bonding strengths of wood in the range of 6.5-20.2% for hardwoods and 5.5-10.4% for softwood species.

References

  • 1. Anonymous. (2020). Microwave technology peneration dephts, Htpp://www.pueschner.com. Retrieved 1 march 2020.
  • 2. Appleton, T. J., Colder, R. I., Kingman, S. W., Lowndes, I. S., & Read, A. G. (2005). Microwave technology for energy-efficient processing of waste. Applied energy, 81(1), 85-113.
  • 3. Hansson, L. (2007). Microwave treatment of wood, Doctoral thesis, Luleå University of Technology, Lulea, Sweden. 137p.
  • 4. Johansson, J. (2001). Property predictions of wood using microwaves. Licentiate Thesis. Vol. 35. Luleå University of Technology, Division of Wood Technology. Lulea, Sweden. 12p.
  • 5. Kržan, A., & Žagar, E. (2009). Microwave driven wood liquefaction with glycols. Bioresource Technology, 100(12): 3143-3146.
  • 6. Lundgren, N. (2007). Microwave sensor for scanning sawn timber. Doctoral Thesis. Vol. 9. Luleå University of Technology, Division of Wood Technology, Lulea, Sweden. 115p.
  • 7. Mekhtiev, M. A., & Torgovnikov, G. I. (2004). Method of check analysis of microwave-modified wood. Wood Sci. & Tech. 38(7): 507-519.
  • 8. Ohlsson, T., & Bengtsson, N. (2001). Microwave technology and foods, Advances in Food and Nutrition Research, 43:65-140
  • 9. Oloyede, A., & Groombridge, P. (2000). The influence of microwave heating on the mechanical properties of wood. J. Mat. Proces. Tech. 100(1-3): 67-73.
  • 10. Sun, Z., Du, G., & Huang, L. (2009). Effect of microwave plasma treatment on surface wettability of common teak wood. Frontiers of Forestry in China, 4(2), 249-254.
  • 11. Torgovnikov G., and Vinden, P. 2000. New wood based materials Torgvin and Vintorg, 5’th Pacific Rim Bio-Based Composite Symp. 10–13 December 2000, Canberra, Australia. Proceeding book, pp. 756–764.
  • 12. Torgovnikov, G., Vinden, P. (2005). New equipment for microwave wood modification, 10'th International Conference on Microwave and High Frequency Heating, September 12-15, 2005, Modena, Italy, Proceedings book, pp. 293-297.

Ahşabın Hidrofilikliği ve Yapışma Direnci Üzerine Mikrodalga Muamelesinin Etkisi

Year 2020, Volume: 22 Issue: 2, 465 - 471, 15.08.2020
https://doi.org/10.24011/barofd.700992

Abstract

Bu çalışmanın amacı ahşap materyalin hidrofilikliği ve yapışma direnci üzerinde mikrodalga muamelesinin etkilerini araştırmaktır. Elde edilen sonuçlar mikrodalga (MW) yardımıyla odun koruyucu (WP) muamelelerin seçilen iğne yapraklı ve yapraklı türler için daha düşük su alma ve şişme değerleri göstermiştir. MW muameleli ahşaplar, WP uygulamalarında su itici (hidrofobik) yüzeylerin oluşumunda hüçre duvarı bileşenlerinin hidroksil gruplarına (–C-OH) bağlanması yada reaksiyon oluşumunu etkilediği açıktır. Fakat su emiciliği tüm MP muameleli örnekler üzerinde önemli ölçüde düşürdüğü bulundu buna karşın çok daha fazla su su emiciliğindeki azalma MW muameleli örnekler için elde edilmiştir. Hesaplanan değerler Ekaliptus için 14.9%, Kavak için 6.9%, Kestane için 6.8%, Sedir için 7.9% ve Çam için 18.1% oranında azalma göstermiştir. MW muameleli örnekler yüksek yapışma direnci üzerinde açık bir kanıt gösterdiği bulundu. MW muameleleri yapraklı ağaç odunları için %6,5-20 ve yapraklı ağaç türleri için %5,5-10,4 arasında yapışma direncini artırdı.

References

  • 1. Anonymous. (2020). Microwave technology peneration dephts, Htpp://www.pueschner.com. Retrieved 1 march 2020.
  • 2. Appleton, T. J., Colder, R. I., Kingman, S. W., Lowndes, I. S., & Read, A. G. (2005). Microwave technology for energy-efficient processing of waste. Applied energy, 81(1), 85-113.
  • 3. Hansson, L. (2007). Microwave treatment of wood, Doctoral thesis, Luleå University of Technology, Lulea, Sweden. 137p.
  • 4. Johansson, J. (2001). Property predictions of wood using microwaves. Licentiate Thesis. Vol. 35. Luleå University of Technology, Division of Wood Technology. Lulea, Sweden. 12p.
  • 5. Kržan, A., & Žagar, E. (2009). Microwave driven wood liquefaction with glycols. Bioresource Technology, 100(12): 3143-3146.
  • 6. Lundgren, N. (2007). Microwave sensor for scanning sawn timber. Doctoral Thesis. Vol. 9. Luleå University of Technology, Division of Wood Technology, Lulea, Sweden. 115p.
  • 7. Mekhtiev, M. A., & Torgovnikov, G. I. (2004). Method of check analysis of microwave-modified wood. Wood Sci. & Tech. 38(7): 507-519.
  • 8. Ohlsson, T., & Bengtsson, N. (2001). Microwave technology and foods, Advances in Food and Nutrition Research, 43:65-140
  • 9. Oloyede, A., & Groombridge, P. (2000). The influence of microwave heating on the mechanical properties of wood. J. Mat. Proces. Tech. 100(1-3): 67-73.
  • 10. Sun, Z., Du, G., & Huang, L. (2009). Effect of microwave plasma treatment on surface wettability of common teak wood. Frontiers of Forestry in China, 4(2), 249-254.
  • 11. Torgovnikov G., and Vinden, P. 2000. New wood based materials Torgvin and Vintorg, 5’th Pacific Rim Bio-Based Composite Symp. 10–13 December 2000, Canberra, Australia. Proceeding book, pp. 756–764.
  • 12. Torgovnikov, G., Vinden, P. (2005). New equipment for microwave wood modification, 10'th International Conference on Microwave and High Frequency Heating, September 12-15, 2005, Modena, Italy, Proceedings book, pp. 293-297.
There are 12 citations in total.

Details

Primary Language English
Subjects Biomaterial
Journal Section Biomaterial Engineering, Bio-based Materials, Wood Science
Authors

Halil Turgut Şahin 0000-0001-5633-6505

Deniz Aydemir 0000-0002-7484-2126

Publication Date August 15, 2020
Published in Issue Year 2020 Volume: 22 Issue: 2

Cite

APA Şahin, H. T., & Aydemir, D. (2020). Effect of Microwave Treatment on Hydrophilicity and Bonding Strength Properties of Woods. Bartın Orman Fakültesi Dergisi, 22(2), 465-471. https://doi.org/10.24011/barofd.700992


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