A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
A study on chemical analysis and water repellency property of ten village wood species was conducted to find out the percentages of their chemical components. It was found that raintrec (Samanea saman) possessed the highest amount of water soluble extractives. It was followed by babla (Acacia nilotica sub. indica), mango (tnangifera indica) and painya mandar (Erythrina ovalifolia). Nccm (Azadirachta indica) and jackfruit (Artocarpus heterophyllus) contained the least amount of this kind of extractives. Alcohol-bcnzcne soluble extractives of the species fell in the range of 1.38- 6.60%. The holocellulose content was the highest in tentul (Tamarindus indica). Chora nccm (Melia azadarach) ranked the next in this respect, in consideration to the cellulose content, tentul, ghora nccm, sissoo (Dalbergia sissoo), mango and babla may be suitable for chemical pulping and conversion products.
These ten species were explored for water repellency test. Neem was found to absorb the least amount of water. In order of gradation on this aspect sissoo, babla and tentul were found to absorb slightly more water. These species may be suitable both for indoor and outdoor uses. Sorption of water in the remaining six species is considerably higher and consequently they arc deemed not suitable for outdoor uses.