Natural Preservatives For Wood Borer Resistance Developed by IPIRTI
Green plants are rich sources of naturally occurring pesticides or fungicides that can be utilized in various ways. The objective of this study was to incorporate these naturally and abundantly occurring pesticides into plywood and evaluate its performance. Therefore an attempt was made to develop an ecofriendly green preservative using naturally available plant resources with high toxicity to wood destroying organisms and low toxicity to humans.
Copper was incorporated into Karanj seed extractive 12 mm plywood samples at different concentration (0.5 to 5%) of preservative were manufactured by using copperisedkaranj extractive as a glue line poisoning. These samples were evaluated to find out the effectiveness as wood preservatives against termites and wood borers.
From the results obtained in this study it can be concluded that 3% concentration of the preservative can be utilized in plywood manufacture which can resist against wood borers. Concentrations above 3% of the preservative interfere with the bonding properties of the resin giving it comparatively inferior glue bonding. The result of MoE, MoR test at 2% and 3% concentrations, when compared with Marine and Shuttering grade plywood show satisfactory limit of acceptance.
The complete details are available in IPIRTI Research Report No. 184, “Copperized Karanj seed (Pongamia pinnata) oil extractive as a protective measure in Plywood Manufacture" by Riya Tudu Solanki and Co-workers.
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