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  JOURNAL DETAIL



Preliminary Study of Anthraquinone in Sweet Bamboo (Dendrocalamus asper Backer) Alkaline Sulfite Pulping


Paper Type 
Contributed Paper
Title 
Preliminary Study of Anthraquinone in Sweet Bamboo (Dendrocalamus asper Backer) Alkaline Sulfite Pulping
Author 
Suphat Kamthai
Email 
Suphat_61@hotmail.com
Abstract:
Sweet Bamboo (Dendrocalamus asper Backer) was raw material in this investigation and it was used to study all of basic bamboo properties and the effect of anthraquinone (AQ) addition on alkaline sulfite (AS) pulping. The results of laboratory indicated the important physical properties and fiber morphologies of sweet bamboo. They were 725 kg/m3; basic density, 60.2%; moisture content and their fiber dimensions were fiber length 3.1 mm, fiber width 18.0 mm, cell wall thickness 6.9 mm and cell lumen 4.4 mm, respectively. The chemical compositions of sweet bamboo illustrated holocellulose 76.3%, alpha-cellulose 68.1%, lignin 28.7% and ash 1.4%. Considering the increment of alkaline charge from 25 to 35% and the
addition of 0.1% AQ in AS – pulping found that the kappa number of alkaline pulping with anthraquinone (AS-AQ) pulp was reduced 12.5 to 9.6 points but AS-pulping condition hadn’t affect AS-AQ pulped yield. The highest kappa number of AS-AQ pulps was evaluated unbleached pulp properties by PFI mill beating. The pulp beating revolution had more affect properties and less influenced optical properties of AS-AQ pulp. At 4,000 revs, presented the highest tensile index, 60.1 Nm/g and tear index, 27.9 mN.m2/g. In contrast to the highest burst index and fold endurance was observed at 5,000 and 7,000 revs. They were 3.3 kPa.m2/
g and 405 r/c respectively.
Start & End Page 
235 - 247
Received Date 
2006-03-16
Revised Date 
Accepted Date 
2007-02-19
Full Text 
  Download
Keyword 
Dendrocalamus asper Backer, alkaline-sulfite pulping, alkaline-sulfite pulping with anthraquinone, holocellulose, alpha-cellulose, lignin, screened yield
Volume 
Vol.34 No.2 (MAY 2007)
DOI 
Citation 
Kamthai S., Preliminary Study of Anthraquinone in Sweet Bamboo (Dendrocalamus asper Backer) Alkaline Sulfite Pulping, Chiang Mai J. Sci., 2007; 34(2): 235-247.
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