文献类型：会议论文

英文题名：MEDICINE-GRADE MICROCRYSTALLINE CELLULOSE PRODUCT FROM COTTON LINTER - THE NEW PRODUCTION TECHNOLOGIES

作者：Liu Shanshan[1] Fang Guigan[1] Wang Qiang[] Wang Zhijie[] Xu Yongjian[]

第一作者：Liu Shanshan

通信作者：Liu, SS[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key & Open Lab Forest Chem Engn, SFA, Nanjing 210042, Peoples R China

会议论文集：International Symposium on Emerging Technologies of Pulping and Papermaking

会议日期：NOV 08-10, 2010

会议地点：Guangzhou, PEOPLES R CHINA

语种：英文

外文关键词：cotton linter; microcrystalline cellulose; ethanol pulping; hydrolysis; medicine-grade

年份：2010

摘要：Cotton linter ethanol pulping trials and TCF bleaching were carried out, and the feasibility of producing medicine-grade Microcrystalline cellulose from cotton linter was discussed as well. The operation conditions, such as the acetic acid dosages, solid-liquor ratio and the cooking time at the maximum temperature during the pulping were investigated. The experimental results indicated that KMnO(4) number of pulps was influenced significantly by solid-liquor ratio and cooking time. The optimal cooking conditions could be proposed as follows: acetic acid dose 1.0%, solid liquor ratio 1:8, cooking time 60 min, which provides pulp with KMnO(4) numbers 8.7 and yield 81.9%. A pulp of KMnO(4) numbers 3.3, alpha-cellulose content 92.5% and brightness 86.6%ISO can be obtained by EAPP bleaching. What's more, Microcrystalline Cellulose Was obtained through optimal acid hydrolysis process from cotton linter ethanol pulp and was detected by XRD, SEM and laser granularity distributing apparatus. The result shows that: the product has a good quality, and can Meet the requirements of the standards of Medicine-grade microcrystalline cellulose that listed in Chinese pharmacopoeia 2005 and USP24.