STUDI KOMPARASI KUALITAS UNBLEACHED PULP ANTARA KAYU EUCALYPTUS BRASSIANA DAN EUCALYPTUS PELLITA

SALSABILAH, NUR and Rachmat, Addy (2025) STUDI KOMPARASI KUALITAS UNBLEACHED PULP ANTARA KAYU EUCALYPTUS BRASSIANA DAN EUCALYPTUS PELLITA. Undergraduate thesis, Sriwijaya University.

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Abstract

Eucalyptus wood is a grow fast plant and used as a raw material for pulp. Eucalyptus wood has various types, one of which is Eucalyptus brassiana and Eucalyptus pellita. This study aims to determine the differences in the chemical properties of wood and unbleached pulp, as well as the quality of pulp based on active alkali charge 16%, 17%, 18% and the differences in the physical properties of unbleached pulp sheets. Testing was carried out by cooking the kraft method using an active chemical solution consisting of natrium hydroxide and sodium sulfide as a cooking liquid at high temperatures. The results of the analysis of the chemical properties of wood obtained lignin, cellulose, hemicellulose and extractive content in Eucalyptus pellita of 31,59%; 47,98%; 14,55%; 0,31%, respectively. While in Eucalyptus brassiana it was 26,39%; 46,99%; 18,49%; 0,15%. Based on kappa number the highest cellulose for unbleached pulp was obtained in Eucalyptus pellita pulp of 94,88% compared to Eucalyptus brassiana of 85,77%. Variation of active alkali charge 16%, 17%, 18% on the quality of unbleached pulp based on kappa number, yield, viscosity obtained Eucalyptus pellita is higher, while the highest brightness was obtained in Eucalyptus brassiana. The results of the physical properties of the pulp sheet against breaking length, tensile index, tearing index, bursting index and folding endurance were obtained the highest in Eucalyptus Pellita. Keywords : Eucalyptus, chemical properties of wood, active alkali charge, quality of unbleached pulp

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Eucalyptus, sifat kimia kayu, active alkali charge, kualitas unbleached pulp.
Subjects:	Q Science > QD Chemistry > QD1-999 Chemistry Q Science > QD Chemistry > QD146-197 Inorganic chemistry Q Science > QD Chemistry > QD241-441 Organic chemistry Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Nur Salsabilah
Date Deposited:	23 May 2025 02:35
Last Modified:	23 May 2025 02:35
URI:	http://repository.unsri.ac.id/id/eprint/173781

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