Effect of heat treatment using palm oil on properties and durability of Semantan bamboo

Abstract

This paper investigates the effect of heat treatment on Semantan bamboo (Gigantochloa scortechinii) with emphasis given to their properties and durability. Matured four-year-old bamboo culms were harvested and subjected to high temperature condition using palm oil as a heating media. Two groups of samples, green and air-dried, were used. The temperatures applied were 140 • C, 180 • C and 220 • C, with exposure duration of 30, 60 and 90 min, respectively. The results of the investigations show that the heat-treated bamboos retained most of their original physical and strength properties after undergoing the heat treatment. Green or air-dried bamboo culms can be dried to an MC of 6-7% within 2-3 h of treatment. The basic densities of bamboo were found to improve slightly by the heat application. The overall strengths properties of the heat-treated bamboo were found to decrease. The modulus of elasticity in the bending strengths was reduced between 2 and 33% in the green-and 6-9% in the air-dried conditions. For the modulus of rupture in the bending strengths, the value was reduced between 1 and 23% in green-and 4-16% in air-dried conditions. The compression strengths were reduced in the range between 2 and 3% in green-and 2-35% in air-dried conditions. The shear strengths were reduced in the range between 16 and 24% and 12-24% in in green-and air-dried conditions, respectively.

Improvement in Durability of Oil Heat Treated 16-Year-Old Acacia mangium in Laboratory Tests

“…Altogether 81 wood samples of sizes 30 cm × 10 cm × 2.5 cm were treated. Method outlines by Izran et al (2010Izran et al ( , 2012, Rafidah (2007), Razak et al (2005) were used in the studies. The wood then removed from the tank after each treatment period ended.…”

“…A. mangium wood at bottom portions possesses the highest resistance against fungi attack compared to the top and middle portions. These are due to high density of wood at the bottom compared to the other portions (Razak, 2010c The oil-heat treatment proved effective in enhancing the durability of A. mangium wood (Razak et al, 2005. The decreasing of weight loss of A. mangium's wood by the fungi, however, are dependent on the temperature and duration of treatment.…”

Production of solid fuel biochar from waste biomass by low temperature pyrolysis

“…In addition, as we know, raw biomass combustion has low thermal efficiency and high pollutant emissions, and suffers from serious ash-related problems such as fouling and slagging problems [3]. However, combustion qualities and ash-related problems of pyrolytic biochars are scarcely studied in the literature although they are two key concerns for biomass used as solid fuel [17,18].…”

Termite Resistance of Thermally-Modified Dendrocalamus asper (Schultes f.) Backer ex Heyne

“…However, increased public concern about the environment has given impetus to the search for more earth-friendly treatment methods. One of these, which has piqued the interest of scientists, is thermal modification using different types of vegetable oils [4,5,6,7]. These oils facilitate fast and uniform heat transfer and provide limited oxygen in the heating vessel [8,9].…”

“…Most studies on oil heat treatment of bamboo relate only to physical and mechanical properties, and very few on durability, specifically on decay resistance and none on termites. Research proved that oil heat treatment improved the resistance of bamboo against fungal decay [4,5,6]. However, its efficacy against termites has not been tested, which provided impetus to this study.…”