Earticle

초록

영어

Chemical modification of wood is an effective method to enhance the biological durability of wood with no toxic effect on the environment. In this study, wood of Triplochiton scleroxylon was modified using acetylation techniques. A total of one hundred wood blocks, (each 20×20×60 mm) obtained from a 22-year old T. scleroxylon tree were conditioned and acetylated at 120oC in a bioreactor containing acetic anhydride for 60, 120, 180, 240 and 300 minutes. The percentage weight gain of acetylated wood was determined. The untreated (control) and treated blocks were exposed to Pleurotus ostreatus (white rot fungus) and Fibroporia vaillanti (brown rot fungus) after which moisture content (MC) and weight loss (WL) was monitored for 16 weeks. Data were analysed using descriptive and inferential statistics at p<0.05 level of significance. The percentage weight gain of acetylated wood samples increased with time from 10.4% (60 minutes) to 22.7% (300 minutes). MC of untreated blocks inoculated with Pleurotus ostreatus was significantly higher than those of Fibroporia vaillantii after 16 weeks exposure. There was no significant difference in the MC of the of the acetylated samples for the two fungi after 300 minutes reaction time. The WL of untreated blocks inoculated with Fibroporia vaillantii was higher than those of Pleurotus ostreatus, however, the two fungi showed no significant difference in the WL for the acetylated samples after 16 weeks exposure. Acetylation prevents moisture absorption and inhibition of fungi growth in acetylated wood compared to untreated wood, thereby enhancing the durability of Triplochiton scleroxylon.

목차

Abstract
Introduction
Materials and Methods
Wood preparation and acetylation procedures
Preparation of culture medium and infection of treated wood samples
Moisture content and weight loss determination
Data analysis
Results and discussion
Weight gian (WG) of acetylated Triplochiton scleroxylonwood samples
Moisture content of acetylated Triplochiton scleroxylonwood samples inoculated with pleurotus ostreatus(white rot) and Fibroporia vaillantii (brown rot)
Fungi attack on acetylated Triplochiton scleroxylon
Acknowledgements
References

키워드

저자

• Adebawo Funke Grace [ Department of Wood and Paper Technology, Federal College of Forestry, Ibadan, P.M.B. 5087, Nigeria, Department of Forest Production and Products, University of Ibadan, Ibadan, P.M.B. 5050, Nigeria ] Corresponding Author
• Ogunsanwo Olukayode Yekeen [ Department of Forest Production and Products, University of Ibadan, Ibadan, P.M.B. 5050, Nigeria ]
• Olajuyigbe Samuel Olalekan [ Department of Forest Production and Products, University of Ibadan, Ibadan, P.M.B. 5050, Nigeria ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634