PHYSICO-CHEMICAL AND MECHANICAL PROPERTIES OF THERMALLY MODIFIED WOOD OF Bombax ceiba L.
| dc.contributor.advisor | BHUPENDER, DUTT | |
| dc.contributor.author | PINGALE AKSHAY KAILAS | |
| dc.date.accessioned | 2019-11-23T06:47:41Z | |
| dc.date.available | 2019-11-23T06:47:41Z | |
| dc.date.issued | 2019-11 | |
| dc.description.abstract | ABSTRACT The present research entitled “Physico-chemical and mechanical properties of thermally modified wood of Bombax ceiba L.” was carried out in the Laboratory and Wood Workshop in the Department of Forest Products, College of Forestry, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2017-18 and 2018-19. Thermal modifications of wood samples were carried out at 80, 120, 160 and 200°C. The study revealed significant variation between physico-chemical and mechanical properties of thermally modified wood of Bombax ceiba. The maximum value of specific gravity (0.422), moisture content (23.86%) and maximum moisture content (177.45%) were recorded in control, whereas the minimum value of specific gravity (0.368), moisture content (1.01%) and maximum moisture content (133.55%) were recorded at 200°C. There was no effect of thermal treatment on fiber length and vessel diameter and fine texture was observed for all temperature treatments. The colour of wood became darker with increase in temperature treatments, nine different colour were observed. The maximum value of shrinkage in longitudinal plane (0.29%), radial plane (3.04%), tangential plane (3.20%) and the minimum value of shrinkage in longitudinal plane (0.09%), radial plane (1.22%), tangential plane (1.38%), while maximum volumetric shrinkage (6.09%) and minimum volumetric shrinkage (2.04%) were recorded in control. While Among temperatures the maximum value of swelling in longitudinal (0.32%), radial (3.68%), tangential plane (3.37%) and minimum value of swelling in longitudinal plane (0.07%), radial plane (2.27%), tangential plane (1.48%), while maximum value of volumetric swelling (7.71%) and minimum volumetric swelling (3.42%) were recorded at 200°C. The maximum cold water soluble extractives (7.09%), hot water soluble extractives (12.77%), and ash content (2.09%) were recorded at 120°C, whereas the maximum holocellulose content (70.27%) at 160°C and the maximum alcohol benzene soluble extractives (12.86%), lignin content (33.16%), were observed at 200°C. The minimum cold water soluble extractives (4.42%), hot water soluble extractives (7.61%) and holocellulose content (64.79%) were found to be at 200°C, while the minimum alcohol benzene soluble extractives (9.06%) in control and lignin content (27.30%) at 80°C. The highest value of tensile strength (0.044 kN/mm2)and bending strength (0.011 kN/mm2) were recorded in control, and compression strength parallel to grain (0.033 kN/mm2) at 80°C. The lowest value of tensile strength 0.037 kN/mm2 and bending strength 0.007 kN/mm2 were recorded at 200°C, whereas compression parallel to the grain (0.026 kN/mm2) observed minimum at 120°C. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810136031 | |
| dc.keywords | Physico-chemical,mechanical properties,wood,Bombax ceiba L. | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 66+I | en_US |
| dc.publisher | UHF,NAUNI | en_US |
| dc.sub | Forest Products | en_US |
| dc.subject | null | en_US |
| dc.theme | Physico-chemical,mechanical properties,wood,Bombax ceiba L. | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | PHYSICO-CHEMICAL AND MECHANICAL PROPERTIES OF THERMALLY MODIFIED WOOD OF Bombax ceiba L. | en_US |
| dc.type | Thesis | en_US |