Fasil Said Manzoor, (2006) Characterisation of pulp and paper obtained from three different ages of acacia mangium in similar habitat. Masters thesis, Universiti Malaysia Sabah.
Woods samples of Acacia mangium tree of three age groups, viz. five, seven and nine years were tested for their alpha cellulose contents, pulp yield and papers quality. The woods were collected from Sabah Forest Industry (SA) area in Ganui, Sipitang, Sabah. The woods were chipped, grinded into small sizes and turned into powder. The wood chips were treated at 170⁰ C, 7-8 MPa for 2.5 hours. The Brendel et al method was used for the extraction of alpha cellulose. The pulp yields of the sample were studied. Later, papers were made using this pulp and the tested for strength qualities. All tests were conducted in accordance to the ISO standards. The results showed that the alpha cellulose contents of the tree increases slightly. The increments were however found not Significant Almost all the age trees gave nearly the same pulp yield with a same cooking condition. The ANOVA analysis was conducted to determine the relation between the age of the tree and alpha cellulose content, pulp yield and paper strength properties. There were no significant changes seen in the paper strength properties with respect to age. It was found that the 5 year old trees showed better characteristics with respect to the older age trees and It's economically suitable for the paper production. These works recommend for the plantation managers (pulp wood) to cut the Acacia mangium trees in the age of 5 rather waiting for 7 - 9 years.
|Item Type:||Thesis (Masters)|
|Uncontrolled Keywords:||Acacia mangium tree, wood, extraction, alpha cellulose, paper production|
|Subjects:||S Agriculture > SB Plant culture|
|Divisions:||SCHOOL > School of International Tropical Forestry|
|Deposited By:||IR Admin|
|Deposited On:||01 Oct 2014 11:00|
|Last Modified:||01 Oct 2014 11:00|
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