The Journal "Agriculture and Forestry"
Časopis "Poljoprivreda i šumarstvo"
- Since 1955 -
Year 2014, Volume 60 Issue 3
| Year : | 2014 |
| Volume : | 60 |
| Issue : | 3 |
| Authors : | Siaw Kian PHIONG, Kang Chiang LIEW, Wan Ni EUNICE CHONG |
| Title : | EFFECT OF REFINING ON ORGANOSOLV ACACIA HYBRID PULP FIBRES AND HANDSHEETS PROPERTIES |
| Abstract : | This paper examines the influence of pulp freeness in different refining degree of organosolv pulps on various handsheet properties. The aim of this study was to compare the handsheet properties from unrefined and refined organosolv pulp fibres by using PFI Mill. For organosolv pulping, organic solvent of ethanol was used. In this study, 50%, 60% and 70% concentrations of ethanol were used to cook Acacia hybrid wood chips in temperature controlled batch digester for 2.5 hours at 185 °C. During refining process, PFI Mill was used to treat pulp to improve the handsheet properties. Pulp freeness was determined by using Canadian Standard Freeness (CSF) tester. From this study, pulp freeness decreases as PFI revolution increases. As action of refining is done on the pulp, fibrillation is occurred on pulp fibre wall. As the process of refining continues, fibrillation increases. Refining caused the pulp fibres to have more surface area which increases fibre-to-fibre bonding. Besides that, 70% ethanol concentration Acacia hybrid pulp is easier to refine in PFI Mill compared to 50% and 60% ethanol concentration consumed. Therefore, its pulp freeness is lowest among them in different PFI revolutions. |
| For citation : | Siaw Kian PHIONG, Kang Chiang LIEW, Wan Ni EUNICE CHONG (2014): EFFECT OF REFINING ON ORGANOSOLV ACACIA HYBRID PULP FIBRES AND HANDSHEETS PROPERTIES. Agriculture and Forestry, Vol. 60 Issue 3: 187-195. |
| Keywords : | Organosolv, PFI Mill, Refining, Freeness, Acacia hybrid |
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