Details are as follows:
Advantages:
A. Alkali resistance
Weak alkaline reagent has little damage to acetate fiber, and the fiber weight loss rate is very small. When it meets strong alkali, especially cellulose diacetate, it is easy to deacetylate, resulting in weightlessness and decreased strength and modulus.
Therefore, the pH value of the solution used to treat cellulose acetate should not exceed 10.5. Under standard washing conditions, it has strong chlorine bleaching resistance and can also be dry-cleaned with tetrachloroethylene.
B. resistance to organic solvents
Cellulose acetate is completely soluble in acetone, DMF and glacial acetic acid, but insoluble in ethanol and tetrachloroethylene. According to these characteristics, acetone can be used as spinning solvent for acetate fiber, and tetrachloroethylene can be used for dry cleaning acetate fiber fabric.
Disadvantages:
From 2065438 to 2008, the global chemical fiber output was more than 70 million tons, and that of China was 50.3 million tons, accounting for more than 70% of the world. But from the point of view of biodegradability, 90% synthetic fibers are not environmentally friendly.
However, this problem can be solved. The new solvent cellulose fiber is a kind of green regenerated cellulose fiber. Through the research and development of China Textile Research Institute, Shandong University, Shandong Yingli and other scientific research institutes and enterprises, we finally mastered the key technologies of production, broke the monopoly of international fiber giants on the China market for more than 20 years, and realized the transformation of China from "watching and running" to "leading" in the local field.