On the key to the glass transition temperature of cellulose acetate
The nature of the material is essential for use. In this sentence, the glass transition temperature of cellulose acetate (Cellulose Acetate Tg) is a material cardinal, which is related to its state change and use.
Cellulose acetate has unique properties. Its Tg is also the temperature at which the state change is critical. When the temperature is less than Tg, if the material is solid, the molecular chain segment activity is limited, and it has rigid properties. It can withstand external forces and become smaller. If the temperature rises above Tg, the molecule is energized, the chain segment is flexible, and the material is gradually elastic, and the deformation is easy and complex.
Looking at its application, Tg has a great impact. When making a film, controlling Tg can determine the density and permeability of the film. If Tg is suitable, the film quality is uniform, and the use effect is excellent. It can be used for filtration, separation and other things. In spinning, Tg is related to the molding and properties of silk. The spinning temperature is adjusted according to Tg, and the silk thickness is uniform and strong, and it is suitable for weaving processes.
Furthermore, Tg is related to cyclic change. The temperature rises and falls, and the material varies according to Tg. Ambient temperature changes, cellulose acetate is suitable according to Tg, and its properties are stable. It is necessary for outdoor use and permanent storage.
To sum up, cellulose acetate Tg can be used to make good use of it and expand its path, which is of great benefit to both material research and industry. It is also the key to exploring and developing materials.