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Bragantia

On-line version ISSN 1678-4499

Abstract

CIARAMELLO, Dirceu. Bamboo as a raw material for the paper industry: studies of three cooking processes with Bambusa tuldoides Munro. Bragantia [online]. 1970, vol.29, n.unico, pp. 11-22. ISSN 1678-4499.  http://dx.doi.org/10.1590/S0006-87051970000100002.

A comparison was made of three cooking processes - soda, soda-sulfur, and neutral sodium sulfite - using four different amounts of alkalis to extract the pulp from Bambusa tuldoides Munro. Yields superior to 50% were obtained in the majority of cookings; but they decreased when 20% or more of NaOH, in relation to the dry weight of chips, were employed. The highest rate of pulp to raw material was obtained with the neutral sodium-sulfite process. The paper produced was highly porous, very good in the tearing and reasonable in folding, tensile-and bursting strength.

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