生物丁醇的副产物制备羧甲基纤维素  

Preparation of Carboxymethyl Cellulose by Using Bio-butanol By-product as Raw Material

作　　者：韩春国[1] 王春鹏[1,2] 金铁铃[1] 储富祥[1,2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室国家林业局林产化学工程重点开放性实验室江苏省生物质能源与材料重点实验室,江苏南京210042 [2]中国林业科学研究院林业新技术研究所,北京100091

出　　处：《生物质化学工程》2010年第6期40-45,共6页Biomass Chemical Engineering

基　　金："十一五"国家科技支撑计划资助(2006BAD18B10);国家863计划资助(2007AA100704)

摘　　要：以玉米秸秆和玉米芯制生物丁醇的副产物为原料制备羧甲基纤维素（CMC），讨论了原料的不同处理方法、碱和醚化剂物质的量之比值以及自制助剂E1#对CMC性能的影响，并用哈克旋转流变仪和傅里叶红外光谱（Fr—IR）对产物进行分析和表征。研究表明以未经过蒸汽爆破处理并经过双氧水漂白处理的玉米秸秆制生物丁醇的副产物为原料制备CMC最为理想；当鲥醚化剂物质的量比值在2．0左右时，CMC产品的黏度较高，当碱／醚化剂物质的量比值在2．3左右时，CMC产品的取代度较高；自制助剂E1#可明显提高CMC的黏度；CMC水溶液的黏度随着剪切速率的增大而降低，表现出很强的剪切稀释性；制得的CMC在1500～1700cm^-1处有羧甲基基团的强吸收峰。得到的CMC产品的理化数据指标为：pH值7．8～8．3；含水率≤6．6％；黏度（2％，25℃）35～6300mPa·s；取代度0．65～1．16。Carboxymethyl cellulose （CMC） was prepared using bio-butanol by-product as raw material. The effects of different processing methods of raw materials, alkali dosage, ether dosage and self-made additives on properties of CMC were discussed. The products were charaterized by Haake Rheometer Rheostress and FT-IR. The results showed that CMC excellent properties could be obtained with bio-butanol by-product from corn stalks or corncob hemi-eellulose, especially those bleaching with hydrogen peroxide but without a procedure of steam explosion treatment. The CMC had high viscosity when the alkali/etherifying agent in the amount of material than about 2.0. The CMC had high substitution degree when the alkali/etherifying agent in the amount of material than about 2.3. The CMC solution viscosity increased with the decrease of shear rate, it showed a strong shear dilution. The CMC bad strong absorption peaks in 1500 -1700 cm-l. It was also demonstrated that the additives could increase significantly the viscosity of CMC. The physical and chemical data of CMC were as follows ： pH value 7.8 - 8.3 ; water content ≤ 6.6 % ; viscosity （2 % , 25 ℃ ）35 -6 300 mPa. s; substitution degree 0.65 - 1.16.

关 键 词：玉米秸秆 生物丁醇副产物 羧甲基纤维素 

分 类 号：TQ352.6[化学工程]