Studies on thermal degradation and termite resistant properties of chemically modified wood. 2002

Manabendra Deka, and C N Saikia, and K K Baruah
Regional Research Laboratory, Council for Scientific and Industrial Research, Jorhat, India.

A series of experiments were carried out to examine the resistant capacity of a chemically treated hard wood, Anthocephalus cadamba (Roxb) Miq. to thermal and termite degradation. The treatment with thermosetting resins viz. urea formaldehyde (UF), melamine formaldehyde (MF) and phenol formaldehyde (PF) at 31-33 levels of weight percent gain (WPG) increased the strength property i.e. modulus of rupture (MOR) by 7.50-21.02% and stiffness i.e. modulus of elasticity (MOE) by 9.50-12.18% over the untreated one with no remarkable effect on specific gravity. The treated samples were found resistant to termite attack, while the untreated one was badly damaged by termites on 12 months' exposure to a termite colony. The thermal degradations of untreated and treated wood samples were studied using thermogravimetric (TGA) and differential thermogravimetric (DTG) techniques at heating rates 20 and 30 degrees C min(-1) in temperature range 30-650 degrees C. The treated wood was found to be thermally more stable than the untreated one.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008855 Microscopy, Electron, Scanning Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY. Scanning Electron Microscopy,Electron Scanning Microscopy,Electron Microscopies, Scanning,Electron Microscopy, Scanning,Electron Scanning Microscopies,Microscopies, Electron Scanning,Microscopies, Scanning Electron,Microscopy, Electron Scanning,Microscopy, Scanning Electron,Scanning Electron Microscopies,Scanning Microscopies, Electron,Scanning Microscopy, Electron
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures
D014934 Wood A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products. Woods
D020049 Isoptera An order of insects, restricted mostly to the tropics, containing at least eight families. A few species occur in temperate regions of North America. Termites,Isopteras,Termite

Related Publications

Manabendra Deka, and C N Saikia, and K K Baruah
July 1987, Biochemistry international,
Manabendra Deka, and C N Saikia, and K K Baruah
February 2022, Polymers,
Manabendra Deka, and C N Saikia, and K K Baruah
October 1968, Biochimica et biophysica acta,
Manabendra Deka, and C N Saikia, and K K Baruah
May 1969, Biochimica et biophysica acta,
Manabendra Deka, and C N Saikia, and K K Baruah
October 1976, Thrombosis research,
Manabendra Deka, and C N Saikia, and K K Baruah
April 1976, Thrombosis and haemostasis,
Manabendra Deka, and C N Saikia, and K K Baruah
December 2018, Journal of the Royal Society, Interface,
Manabendra Deka, and C N Saikia, and K K Baruah
October 2011, Journal of photochemistry and photobiology. B, Biology,
Manabendra Deka, and C N Saikia, and K K Baruah
July 2023, Bioresource technology,
Manabendra Deka, and C N Saikia, and K K Baruah
October 2011, Insects,
Copied contents to your clipboard!