The sugarcane bagasse is a by-product of the sugar industry. It is a kind of fibrous waste containing lignin and cellulose after the juice of sugarcane is squeezed out by the press.
The color of the bagasse is grayish yellow to light green. It is a mixture of hard fiber and soft parenchyma (bagasse pith). The bagasse contains rich cellulose. The main chemical components are about 50% cellulose (C6H10O5)n, about 25% hemicelluloses (C5H804)n, and about 25% lignin.
Bagasse pulp paper has good evenness, smoothness, and strong ink absorption ability, so it has a broad application prospect. The bleached bagasse pulp mixed with a certain amount of long fibers can be used to produce high-grade printing paper, writing paper, paper tissue, coated paper, pulp molding packaging, etc.
As a type of paper making material, the bagasse has its own features compared with wood and straw materials:
1. The source of bagasse supply is stable. Large-scale sugar industry can produce a large number of bagasse, and the bagasse is convenient to store and transport.
2. The content of cellulose in bagasse is generally 50% ~ 55%, which is higher than straw and equivalent to wood; the lignin content is about 20%, higher than straw and lower than wood, so bagasse pulp is easy to cook; silicon content is lower than straw and higher than wood, so alkali recovery of bagasse pulping black liquor is easier than that of straw pulp.
3. Bagasse is a kind of mixed fiber material with heterogeneous structure and different size particles. The pith ratio of bagasse is about 35%~40%, which is the reason why bagasse has strong absorption ability. However, the bagasse pith has no interlacing force, so it should be removed from the bagasse before the pulping process.
Post time: May-26-2023