The chemical composition of tropical hardwoods and its influence on pulping processes (original) (raw)

The Chemistry and Processing of Wood and Plant Fibrous Material, 1996

Abstract

ABSTRACT The chemical composition of some Ghanaian hardwoods are described as well as investigations into their pulping characteristics. The results show that the chemical composition of these hardwoods are as varied as their densities. Klason lignin values cut across the whole range of values for both temperate softwoods and hardwoods. The cellulose contents range from as low as 33.0% to 53.1%. The extractive contents are also high compared to temperate woods. The results of the pulping studies reveal that these tropical hardwoods could be pulped individually and in mixtures with soda process at 20% alkali on wood to produce pulps with total yields ranging from 45.93 to 53.2% and kappa numbers of 20 to 55.

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