Indian Forester

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Dissolving Grade Pulps from Tropical Pines


     

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Results reported in this paper indicate that high alpha-cellulose pulps suitable for the manufacture of Filament Rayon and Tyrecord yarn can be produced from two species of tropica pines (P. pseudostrobus and P. greggi) by using acid -prehydrolyzed kraft process followed by multistage bleaching Dissolving-grade pulps were obtained in≈35-40% yield with ≈ 93--95% alpha cellulose and ≈86-88% Elrepho (I S.O.) brightness by using C/E/H/D or C/E/H/D/ E/D bleaching sequences.
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Rita Dhawan

B. G. Karira

Y. K. Sharma


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  • Dissolving Grade Pulps from Tropical Pines

Abstract Views: 268  |  PDF Views: 0

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Abstract


Results reported in this paper indicate that high alpha-cellulose pulps suitable for the manufacture of Filament Rayon and Tyrecord yarn can be produced from two species of tropica pines (P. pseudostrobus and P. greggi) by using acid -prehydrolyzed kraft process followed by multistage bleaching Dissolving-grade pulps were obtained in≈35-40% yield with ≈ 93--95% alpha cellulose and ≈86-88% Elrepho (I S.O.) brightness by using C/E/H/D or C/E/H/D/ E/D bleaching sequences.