Chong, Eunice Wan Ni (2015) Yield study of Acacia hybrid using organosolv pulping and their relationship with handsheet properties. Masters thesis, Universiti Malaysia Sabah.
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Abstract
This study was made on pulp production from the fast growing plant, Acacia hybrid. The total yield, screened yield, rejected yield, Kappa number, and fibre morphology of organosolv Acacia hybrid pulp and Kraft pulp were determined. This study aimed to focus on the effect of the varied concentration of organic solvent towards the pulp yield and its relationship with Kappa number and pulp yield as well as comparison between organsolv pulp and Kraft pulp. Uniform-sized chips were taken to undergo pulping in a digester with five different concentrations of ethanol, 50%, 60%, 70%, 80% and 90% (v/v) with 10% of 1 M sodium hydroxide as catalyst. All chips were digested in a temperature-controlled digester with constant amount of water added and temperature of 185 °C with the duration of three hours cooking time and correspond pressure 1.1-1.2 MPa. It was observed that increasing of ethanol concentration has led to pulp yield and viscosity increment while decreased in Kappa number. Screened yield of 90% ethanol concentration showed 44.19% which was higher compared to Kraft pulp yield. These increments showed a significant difference at p≤0.05. Also, mechanical strength for tensile, burst, and folding of both non-beaten pulp and beaten pulp increased gradually with ethanol concentration from 50% to 90%. However, tear index decreased. The overall result showed that organosolv pulp properties were at par value as Kraft pulp properties.
| Item Type: | Thesis (Masters) |
|---|---|
| Keyword: | Acacia, Pulp production, Wood fibre |
| Subjects: | Q Science > QK Botany > QK1-989 Botany > QK640-(707) Plant anatomy |
| Department: | FACULTY > Faculty of Science and Natural Resources |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 21 Aug 2024 16:43 |
| Last Modified: | 21 Aug 2024 16:43 |
| URI: | https://eprints.ums.edu.my/id/eprint/40658 |
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