废报纸纤维制备微晶纤维素的工艺研究
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摘要
以预处理的废报纸为原料,在一定条件下进行盐酸水解改性研究,考察了液料比、浓度、时间、温度对废报纸盐酸水解纤维素程度的影响,并采用正交试验法优化了反应工艺条件。研究结果表明,在温度80℃、水解时间1h、盐酸质量分数为6wt%、液料比为1:15时,微晶纤维素的得率最高可达88.65%。
The pretreated waste newspaper is used as raw material for the hydrochloric acid hydrolysis under certain conditions, the effects of liquid-to-solid ratio, hydrochloric acid concentration, time and temperature on the degree of hydrochloric acid hydrolysis of cellulose waste newspaper are studied in the present paper. The orthogonal test is adopted to optimize the reaction conditions. The results show that the yield of microcrystalline cellulose is up to 88.65% when the temperature reaches 80℃, the hydrolysis time is 1 H, the hydrochloric acid mass fraction is 6 wt%and the liquid-to-solid ratio is 1:15.
The pretreated waste newspaper is used as raw material for the hydrochloric acid hydrolysis under certain conditions, the effects of liquid-to-solid ratio, hydrochloric acid concentration, time and temperature on the degree of hydrochloric acid hydrolysis of cellulose waste newspaper are studied in the present paper. The orthogonal test is adopted to optimize the reaction conditions. The results show that the yield of microcrystalline cellulose is up to 88.65% when the temperature reaches 80℃, the hydrolysis time is 1 H, the hydrochloric acid mass fraction is 6 wt%and the liquid-to-solid ratio is 1:15.
引文
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[2]王佳佳,樊一帆,吴一山,等.废报纸吸附甲基蓝的过程研究:吸附模型比较与误差分析[J].宁波工程学院学报,2014,26(4):12-16.
[3]王宗德,胡庆国.微晶纤维素的特性及其应用[J].江西林业科技,2000(1):26-28.
[4]JEN SEN Wu,HSIU-O HO,MING-THAU SHEU.A statistical design to evaluate the influence of manufacturing factors on the material properties and functionalities of microcrystalline cellulose[J].European Journal of Pharmaceutical Sciences,2001,12(4):417-425.
[5]徐永建,敬玲梅.微晶纤维素特性的研究论文[J].陕西科技大学学报,2010,28(2):54-56.
[6]张凯镝,顾燕芳,吕荣俊,等.废报纸纤维的乙酰化改性研究论文[J].宁波工程学院学报,2016,28(4):21-25.
[7]薛金莲.加拿大一只黄花基的生物炼制及应用[D].上海:东华大学,2013:15-21.
[8]PETRA M.FECHNER,SIEGFRIED WARTEWi IG.Properties of microcrystalline cellulose and powder cellulose after extrusion/spheronization.A studied by fourier transformraman spectroscopy and environmental scanning electron microscopy[J].The AAPS pharmaceutical Science,2003,5(4):12-13.
[9]何耀良,廖小新,黄科林,等.微晶纤维素的研究进展[J].化工技术与开发,2010,39(1):12-16.
[10]韩颖,李凤萍,樊婷婷,等.酸法制备芦苇微晶纤维素工艺的研究[J].中国造纸,2015,34(1):71-74.