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PULPING AND PAPERMAKING POTENTIAL OF ACACIA AULACOCARPA BENTH WOOD IN INDONESIA
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In this study, samples from 27-year-old Acacia aulacocarpa grown on a plantation were examined to determine suitable kraft pulping conditions and properties for paper production. The results showed that A. aulacocarpa had a high basic density of 0.65 g/cm3 and a short fiber length of 0.84 mm. The derived values for Runkel, slenderness, and flexibility ratios were 1.02, 53.01, and 0.48, respectively. Five different active alkali concentrations ranging from 14% to 22%, with intervals of 2% were applied for kraft cooking. The percentages of reject, kappa number, and residual active alkali of black liquor were negatively related to the charge applied in pulping runs. Pulping with 18% active alkali content obtained a screened yield of 51.4% at a kappa number of 34.1. The 20% active alkali cook had the highest mechanical properties of the handsheets. The burst and tear indices met the Indonesian National Standard for leaf (hardwood) bleached kraft.
Pulp and Paper Research Institute
Title: PULPING AND PAPERMAKING POTENTIAL OF ACACIA AULACOCARPA BENTH WOOD IN INDONESIA
Description:
In this study, samples from 27-year-old Acacia aulacocarpa grown on a plantation were examined to determine suitable kraft pulping conditions and properties for paper production.
The results showed that A.
aulacocarpa had a high basic density of 0.
65 g/cm3 and a short fiber length of 0.
84 mm.
The derived values for Runkel, slenderness, and flexibility ratios were 1.
02, 53.
01, and 0.
48, respectively.
Five different active alkali concentrations ranging from 14% to 22%, with intervals of 2% were applied for kraft cooking.
The percentages of reject, kappa number, and residual active alkali of black liquor were negatively related to the charge applied in pulping runs.
Pulping with 18% active alkali content obtained a screened yield of 51.
4% at a kappa number of 34.
1.
The 20% active alkali cook had the highest mechanical properties of the handsheets.
The burst and tear indices met the Indonesian National Standard for leaf (hardwood) bleached kraft.
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