Variations in fiber length and some pulp chemical properties of Leucaena varieties.

摘要

To identify non-wood fast-growing species utilizable for pulp and paper production six Leucaena varieties were tested. Concurrently, these species were also tested for suitability as pulp materials on a laboratory scale. Biomass productivity of three Leucaena varieties (Leucaena diversifolia, Leucaena collinsii and Leucaena leucocephala) studied ranges from 67.14 to 9.44 t ha-1 (o.d.b.) under Mediterranean conditions for the year first sprouts. The main physico-chemical properties of the pulp produced from these varieties were also evaluated as functions of the following parameters: NaOH solubles, alcohol-benzene extractives, hot water extractives, lignin, alpha -cellulose and holocellulose. The study confirms the feasibility of the MD-organocell pulping process for Leucaena varieties. MD-organocell pulping provides an efficient delignification. In this process, the operation temperature, among studied, has a positive effect pulp measured properties. Large amounts of lignin from 83.24 to 95.05% of the initial content are removed during the pulping process, depending on the Leucaena variety..