Superior Cellulose hpmc

The production of cellulose products begins with the acquisition and pretreatment of raw materials. Common cellulose raw materials include wood (softwood and hardwood), cotton linter, bamboo, hemp plants, and agricultural waste (such as straw, bagasse, etc.). Raw material pretreatment usually includes steps such as washing, crushing and screening to remove impurities and obtain material sizes suitable for subsequent processing. For lignocellulosic raw materials, lignin and hemicellulose need to be separated by chemical or mechanical methods. This process is called pulping. Chemical pulping methods (such as the sulfate process and sulfite process) are efficient but polluting, while mechanical pulping methods are more environmentally friendly but have lower yields.

Purified cellulose can be made into various products through different processing methods. In the papermaking industry, cellulose fibers are made into paper through processes such as pulping, adding additives, forming and drying. For regenerated cellulose products (such as viscose fibers), cellulose is first dissolved in a specific solvent (such as sodium hydroxide/carbon disulfide system) and then reshaped into fibers through a spinning process. In recent years, new environmentally friendly solvent systems such as N-methylmorpholine-N-oxide (NMMO) have been developed for the production of lyocell fibers. The production of nanocellulose usually uses acid hydrolysis, mechanical treatment or enzyme treatment to depolymerize cellulose fibers to the nanoscale.

Paper Industry

Textile Industry

food additives

Pharmaceutical excipients: microcrystalline cellulose for tablets

Battery separator

Water treatment materials