SODA-ANTHRAQUINONE PULP FROM MALAYSIAN CULTIVATED KENAF FOR LINERBOARD PRODUCTION

The goal of this study was to prepare soda- anthraquinone pulp from kenaf whole stem and to compare the resultant core and bast pulps for linerboard production. Pulping was done under mild cooking conditions (active alkali 12-15%) with a cooking time of 30-90 min and a temperature of 160oC. During the pulping process, kappa numbers ranged from 56.0 to 20.6, while total yields varied from 58.4 to 54.2% with a rejection rate of 2.3 to 0.1%. Based on the quality of pulp produced, kappa numbers 49.4 and 25.4 was selected as symbolic of high and low pulps respectively. The results of the study revealed significant difference between the properties of core, whole stem (KHK and KLK), and bast pulps. Core pulps with low freeness and high drainage time the study found produced sheets with greater density, tensile index, burst index and RCT, with lower light scattering coefficient and tear index than bast pulp. Whole stem pulps showed properties between those of core and bast pulps. Moreover, KLK with high drainage time produced papers with significantly higher strength properties than KHK.

[1]  J. C. Villar,et al.  Comparative study of Kenaf varieties and growing conditions and their effect on kraft pulp quality , 2001, Wood Science and Technology.

[2]  J. Clark.  Pulp technology and treatment for paper , 1978 .

[3]  Y. Ohtani,et al.  Influence of the chemical composition of kenaf bast and core on the alkaline pulping response , 2001, Journal of Wood Science.

[4]  O. Kordsachia,et al.  Alkaline pulping with Additives of Kenaf from Sudan , 2002 .

[5]  O. Kordsachia,et al.  Alkaline pulping of some eucalypts from Sudan. , 2006, Bioresource technology.

[6]  Hazizan Md Akil,et al.  Chemical modification of kenaf fibers , 2007 .

[7]  Mohammad Jawaid,et al.  Cell wall ultrastructure, anatomy, lignin distribution, and chemical composition of Malaysian cultivated kenaf fiber , 2010 .

[8]  J. C. Villar,et al.  Improving the use of kenaf for kraft pulping by using mixtures of bast and core fibers , 2009 .

[9]  James E. Kline,et al.  Paper and paperboard : manufacturing and converting fundamentals , 1982 .

[10]  S. Karakuş.  Physical, chemical, soda pulping and papermaking properties of Kenaf as a function of growth , 1998 .

[11]  Bahadur Singh,et al.  Studies on Hibiscus cannabinus and Hibiscus sabdariffa as an alternative pulp blend for softwood: An optimization of kraft delignification process , 2009 .

[12]  C. B. Dahl.  Limited range of the ring crush test , 1985 .

[13]  J. Gibbs,et al.  The pulping characteristics of Eucalyptus species grown in Malawi. , 1989 .

[14]  Influence of pulping variables on the properties of Elaeis guineensis soda pulp as evaluated by response surface methodology , 2004, Wood Science and Technology.

[15]  A. Ashori.  Pulp and paper from kenaf bast fibers , 2006 .

[16]  P. Khristova,et al.  Soda-AQ pulp blends from kenaf and sunflower stalks , 1998 .

[17]  J. L. Minor,et al.  RESTORING BONDING STRENGTH TO RECYCLED FIBERS , 1993 .

[18]  L. Jiménez,et al.  Soda-anthraquinone pulping of palm oil empty fruit bunches and beating of the resulting pulp. , 2009, Bioresource technology.