抄録
Cotton yarn was acetylated in fibrous form using sulfuric acid (sulfoacetic acid) catalyst in liquid phase. It may be very smoothly acetylated after a short pretreatment with acetic acid. Count of yarn has almost no influence on the acetylation rate, for cotton yarn can be acetylated as easily as cotton fibers. Acetylation rate of raw cotton yarn is somewhat lower but it may be bleached after the acetylation. In comparison to viscose rayon, amorphous part of cotton is more easily accessible to organic liquids, so that the pretreatment for acetylation is simpler in the latter case.
