Production manner null of two cellulose acetates which designate the bamboo fiber as

摘要

PROBLEM TO BE SOLVED: To reduce loss and contamination of a raw material, sufficiently disintegrate and disperse bamboo fibers, accelerate the acetylation reaction rate, reduce the crystallinity of fibers, improve the accessability to a reacting agent of fibers, circulatingly utilize an immersion acetic acid solution, and reduce the consumption and the recovery amount of acetic acid.;SOLUTION: The present invention disclose a method for producing diacetylcellulose using one type of bamboo fibers as a raw material, and the method includes the steps of immersion dispersion, ultrasonic treatment, deacidification, acetyl group substitution reaction, hydrolysis, precipitation deposition, sieving, acid extrusion, cleaning, squeezing, drying and the like.;COPYRIGHT: (C)2012,JPO&INPIT