The Malaysian Journal of Analytical Sciences Vol 17 No 1 (2013): 75 – 84

 

 

 

EFFECT OF SODA-ANTHRAQUINONE PULPING CONDITIONS AND BEATING REVOLUTION ON THE MECHANICAL PROPERTIES OF PAPER MADE FROM Gigantochloa scortechinii (SEMANTAN BAMBOO)

 

(Kesan Faktor-Faktor Pemulpaan Soda-Antrakuinon dan Pemukulan Ke Atas Sifat-Sifat Mekanikal Kertas Gigantochloa Scortechinii (Buluh Semantan))

 

Nurul Husna Mohd Hassan¹*, Suhaimi Muhammed¹, Rushdan Ibrahim²

 

¹ Department of Wood Industry, Faculty of Applied Sciences,

Universiti Teknologi MARA Pahang, 26400 Bandar Tun Abdul Razak, Jengka Pahang

²Pulp and Paper Programme,

Forest Research Institute Malaysia (FRIM), 52109 Kepong, Selangor

 

*Corresponding author: afna07@yahoo.com

 

 

Abstract

The effect of soda-AQ pulping conditions and beating revolution on the mechanical properties of paper made from Semantan bamboo (Gigantochloa scortechinii) was studied. The bamboo chips were pulped using MK digester pulping unit with 10 to 20% alkali charge and 150 to 170^oC cooking temperature. The screened yield varies from 38.7 to 48.4%, and each yield went through beating process at 1000 or 8000 beating revolutions. The bamboo pulp was then made into 60 g/m² laboratory scale papers and their mechanical properties were assessed conforming to TAPPI standards. The results revealed that tensile index, bursting index, tearing index and folding endurance ranged from 42.04 to 91.09 Nm/g, 2.68 to 7.10 kPa.m²/g, 11.03 to 26.64 mN.m²/g and 30 to 1127 double folds, respectively. The highest paper properties were found from pulping condition of 15% alkali charge and 150^oC cooking temperature based on the fibre bonding index, with tensile index at 87.71 Nm/g, bursting index at 6.94 kPa.m²/g, tearing index at 12.72 mN.m²/g and folding endurance at 613 double folds. Such findings indicate that comparable high strength mechanical properties of paper can be produced from Semantan bamboo pulp with more environmentally friendly pulping process compared to the kraft pulping process that had been used in bamboo pulping.

 

Keywords: soda-AQ pulping, Semantan bamboo, beating, paper mechanical properties

 

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