The method of cellulose acetate synthesis
Those who want to do good things in ancient times must first understand the reason, and the same is true for the synthesis of cellulose acetate.

For cellulose, it is often found in the body of plants, its quality is tough and its structure is dense. To form cellulose acetate, it is first necessary to prepare excellent cellulose raw materials, which is the foundation. When choosing, when checking its purity and polymerization, it is necessary to seek its excellence, which can lay the foundation for subsequent work.

When you have obtained good materials, you must enter the reaction process. Acetic anhydride is used as an acylating agent, which is active and can date cellulose. Add an appropriate amount of catalyst, such as sulfuric acid, to promote the reaction speed. When the temperature is too high, the reaction will be too fast, and the product will be inferior; if it is too low, it will be slow and difficult to reach, which will take time and effort. Therefore, the key to temperature control is success or failure.

When the reaction occurs, the various substances in the kettle blend, and the chemical bonds crack and new bonds are formed. The hydroxyl group of cellulose combines with the acetyl group of acetic anhydride, and then the initial shape of cellulose acetate is formed. However, at this time, the product may be impure and contain various impurities, and a method of refining must be added.

The process of refining is often carried out by washing and filtering. It is washed with a suitable solvent to dissolve the impurities, leaving pure cellulose acetate. After filtering, the liquid is removed to obtain a solid form. Then dry it, remove its moisture, so that the texture of the product is uniform and the performance is stable.

Even if it is stored, it also has its own regulations. When placed in a dry and cool place, it should be protected from moisture and heat to prevent its performance from changing. In this way, good quality cellulose acetate can be obtained to meet all kinds of consumption, and it has its own functions in the textile, plastic and coating industries.