Denim fabric series

Is the denim fabric pure cotton? In the denim environment trend, although cotton is dubious and very tense, there are also a series of blended fabrics, such as cotton/polyester blends, and cotton and other fibers such as Tencel, linen, and even Jute, wool yarn woven together. Cotton denim has been used as a fabric for pants and jackets, but in the 1990s, the user population made a higher request for the soft, comfortable and easy-to-care function of the fabric, so through various chemical treatments, as well as the results of applications such as flocking, embroidery and coating, the study to transform the surface of denim has been continuous.