Making cellulose acetate from cellulose
There is a technique today, starting with cellulose, making cellulose acetate. Cellulose is a natural polysaccharide, and its molecules are long chains and have hydroxyl groups. To form cellulose acetate, first make cellulose meet acetic anhydride, and use sulfuric acid as a catalyst.

At the beginning, take an appropriate amount of cellulose and place it in a clean vessel. Next, slowly inject acetic anhydride into it. Acetic anhydride is strong, and when it meets cellulose, it will undergo a chemical change. Then drop a little sulfuric acid, which is used as a catalyst to promote the reaction. In the meantime, the temperature needs to be controlled properly and evenly to ensure the smooth reaction.

At the time of the reaction, the hydroxyl group of cellulose and the acetyl group of acetic anhydride are combined to form cellulose acetate. After the reaction is completed, quench it with water to remove the excess acetic anhydride and sulfuric acid. After that, filter it and wash it to obtain crude cellulose acetate. After refining, such as recrystallization, etc., pure products can be obtained.

This method can be used to cellulose cellulose acetate, which has a wide range of uses and is widely used in textiles, plastics, and film industries. It can increase the properties of materials and expand its use.