Sugarcane is one of the main raw materials for sugar production. Bagasse is the main by-product of the sugar industry. It is the fibrous residue of sugarcane stems after crushing and extracting sugarcane juice. Bagasse is a mixture, the texture of bagasse is rough and hard, accounting for about 24%~27% of sugarcane (including about 50% water content). For every ton of sucrose produced, 2~3 tons of bagasse will be produced. The main components of bagasse are cellulose and hemicellulose, and there is less lignin, so bagasse has great advantages as a fiber raw material.
In the 1970s, the sugarcane bagasse of China's sugar factories was mainly used for burning or discarding the sugar factory itself as fuel. It is a treasure house of polymer materials and green chemicals, which also contains abundant biomass energy. Moreover, bagasse has obvious advantages as a biomass raw material: the source of bagasse is concentrated, the output is large, the collection is simple, the transportation radius is small, and the composition of sugarcane is relatively stable and uniform in nature. Concentration, continuity and homogeneity of raw materials required for biorefinery, therefore, bagasse is a high-quality raw material for biorefinery.
At present, there are mature technologies using bagasse as an alternative raw material for wood to produce paper cup base paper, fully degradable paper agricultural mulch, and paper dining utensils. Among them, the fully degradable paper agricultural mulch film uses 100% bagasse pulp, which can be recycled for papermaking and can be naturally degraded. It can solve the problem of white pollution caused by the use of polystyrene tableware for many years. It is considered to be the most promising new Results: The food and beverage made of bagasse has high whiteness and tightness, good temperature and oil resistance, non-toxic and tasteless, can be completely degraded within three months, no three waste pollution in the production process, and the production cost is much lower than Pulp molded snack boxes.
The chemical composition of bagasse is similar to that of wood, and it is a good raw material for board making. Due to the small specific gravity of bagasse and the good fiber quality, the obtained board has high strength and light weight, and the produced board and profile are free from biological invasion, low water absorption, and not corroded by seawater; good fire resistance and good resistance It has good mechanical processing performance and decorative performance, and is suitable for furniture, construction, carriages, ships, packaging boxes and other production industries. The product has strong plasticity, and it can directly produce various plates and profiles by replacing different molds or templates, which has great market value. The realization of high-density composite material technology not only solves the problem of pollution discharge of agricultural waste and urban waste, but also saves limited forestry resources, which will definitely have a huge impact on my country's environmental protection industry in the 21st century.