The method of making cellulose acetate
To make cellulose acetate, you need to prepare an appropriate amount of cellulose raw materials, which is the foundation. Cellulose is often taken from wood pulp, cotton lint, etc. Whether its texture is pure or not depends on the quality of the finished product.

First pretreat the cellulose to make it suitable for reaction. Or chop it to increase the contact area with the reaction reagent; or moisten it to make the cellulose structure loose, which is more conducive to subsequent reaction.

Secondary preparation of reaction reagent, acetic anhydride and catalyst are indispensable. Acetic anhydride is an acetylation reagent that imparts an acetyl group to cellulose; catalysts such as sulfuric acid can promote the reaction to proceed efficiently, but the dosage needs to be precisely controlled. If there is more, the reaction will be over-reacted, and if there is less, the reaction will be slow.

The reaction is carried out in a suitable container, and the pretreated cellulose, acetic anhydride and catalyst are mixed in proportion. Temperature and time are also key factors. If the temperature is maintained at a certain range, the reaction will be slow if it is too low, and if it is too high, it will easily cause side reactions. After some time, the reaction will be sufficient.

After the reaction is completed, the product needs to be treated. The residual catalyst is often removed by neutralization method,

Homemade cellulose acetate requires rigorous operation in each step to obtain high-quality products for use in a variety of fields, such as plastics and fiber manufacturing.