广东费飘职业故本学院 Guangdong Inatitute of Textile Technology Introduction a Fibers in which forming substance is cellulose acetate where not less than 929/ of hydroxyl groups are acetylated replacing-OH groups with -COCH3 D Acetate: 2 of 3-OH groups in each 6 member ring are acetylated; N2.5 a Triacetate: Nearly all -oh groups are replaced 2.91N296 a Major use: lining fabrics for suits coats draperiesIntroduction  Fibers in which forming substance is cellulose acetate where not less than 92% of hydroxyl groups are acetylated: replacing -OH groups with -COCH3 .  Acetate: 2 of 3 -OH groups in each 6- member ring are acetylated; ~2.5  Triacetate: Nearly all -OH groups are replaced 2.91~2.96  Major use: lining fabrics for suits, coats, draperies