Mechanical properties of beating pulp and paper from rice straw

Rushdan Ibrahim, . and Mohamad Jani Saad, . Mechanical properties of beating pulp and paper from rice straw. pp. 103-109. ISSN 1394-9829

This study was carried out to investigate the effect of beating on rice straw pulp and paper properties. The rice straw pulps were produced from pulping process using chemi-mechanical pulping (CMP) method and then were beaten. Pulp produced with and without beating was evaluated for apparent density and freeness. The beaten pulp showed significantly better apparent density and freeness than unbeaten pulp. The apparent density of beaten and unbeaten pulps was 0.74 g/cm3 and 0.69 g/cm3 respectively while the freeness of beaten and unbeaten pulps was 250 ml and 415 ml respectively. The paper from beaten pulp showed significantly better mechanical properties whereby the tensile index is at 79.57 Nm/g burst index at 5.70 kPa.m2 tear index at 4.17 mNm2/g and folding endurance at 508 whereas the unbeaten paper is at 67.28 Nm/g 4.98 kPa.m2 3.28 mNm2/g and 195 respectively. The optical behaviour such as opacity and brightness of paper from beaten and unbeaten pulps showed no significant values. The opacity and brightness of paper for beaten pulp were 99.81 and 32.44 respectively while the paper using unbeaten pulp were 99.88 for opacity and 33.58 for brightness.

Full text available from: Official URL: http://jtafs.mardi.gov.my/jtafs/44-1/mechanical.pd...

Abstract

This study was carried out to investigate the effect of beating on rice straw pulp and paper properties. The rice straw pulps were produced from pulping process using chemi-mechanical pulping (CMP) method and then were beaten. Pulp produced with and without beating was evaluated for apparent density and freeness. The beaten pulp showed significantly better apparent density and freeness than unbeaten pulp. The apparent density of beaten and unbeaten pulps was 0.74 g/cm3 and 0.69 g/cm3 respectively while the freeness of beaten and unbeaten pulps was 250 ml and 415 ml respectively. The paper from beaten pulp showed significantly better mechanical properties whereby the tensile index is at 79.57 Nm/g burst index at 5.70 kPa.m2 tear index at 4.17 mNm2/g and folding endurance at 508 whereas the unbeaten paper is at 67.28 Nm/g 4.98 kPa.m2 3.28 mNm2/g and 195 respectively. The optical behaviour such as opacity and brightness of paper from beaten and unbeaten pulps showed no significant values. The opacity and brightness of paper for beaten pulp were 99.81 and 32.44 respectively while the paper using unbeaten pulp were 99.88 for opacity and 33.58 for brightness.

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Item Type:	Article
AGROVOC Term:	Rice straw
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Pulp and paper industry
AGROVOC Term:	Pulping
AGROVOC Term:	Density
AGROVOC Term:	Optical properties
AGROVOC Term:	Tensile strength
AGROVOC Term:	Hydrogen
AGROVOC Term:	Fibres
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24405

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