The main differences between viscose fiber and polyester fiber:

1.Raw Materials: Viscose fibers are made of natural cellulose raw materials such as wood pulp or cotton lint, which are chemically treated. Polyester fibers are synthesized through polycondensation reaction of organic dibasic acid and diol.

2.Hygroscopicity: Viscose fiber has good hygroscopicity and can absorb and emit moisture, so it has obvious advantages in wearing comfort of close-fitting clothing. In contrast, polyester fibers have poor hygroscopicity, but show their wrinkle resistance, elasticity and dimensional stability.

3.Warm retention: Viscose fiber is usually slightly inferior to polyester fiber in warmth due to its hygroscopicity. However, it is better in softness and feel. Polyester fiber has a longer service life in outdoor clothing and sports equipment due to its good elasticity and wear resistance.

4.Cost: Viscose fibers are usually produced at higher cost than polyester fibers. Polyester fiber, commonly known as polyester, is very common in the market due to its low cost and wide application.

5.Environmental protection: Viscose fiber may cause certain pollution during the production process, while the production of polyester fiber involves chemical synthesis, and its impact on the environment cannot be ignored. When selecting fiber materials, it is necessary to comprehensively consider environmental protection issues in the production process.