Introduction Fibers in which forming substance is cellulose acetate where not less than 92%o 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, 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