[1]周彩荣,徐敏强,王晓松,等.由化纤厂废碱液制备羧甲基纤维素[J].郑州大学学报(工学版),2015,36(01):33-36.[doi:10.3969/ j. issn.1671 -6833.2015.01. 008]
　ZHOU Cai-rong,XU Min-qiang,WANG Xiao-song,et al.Preparation of carboxymethyl cellulose (CMC) using the waste liquor of the viscose fiber industry[J].Journal of Zhengzhou University (Engineering Science),2015,36(01):33-36.[doi:10.3969/ j. issn.1671 -6833.2015.01. 008]
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由化纤厂废碱液制备羧甲基纤维素()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36
期数:
2015年01期
页码:
33-36
栏目:
出版日期:
2015-01-10

文章信息/Info

Title:
Preparation of carboxymethyl cellulose (CMC) using the waste liquor of the viscose fiber industry
作者:
周彩荣; 徐敏强; 王晓松; 王海峰
郑州大学化工与能源学院,河南郑州450001
Author(s):
ZHOU Cai-rong; XU Min-qiang; WANG Xiao-song; WANG Hai-feng
School of Chemical Engineering and Energy，Zhengzhou University ,Zhengzhou 450001 ,China
关键词:
粘胶纤维; 废碱液﹔羧甲基纤维素
Keywords:
viscose fiber ;  spent caustic ;  CMC
分类号:
TQ0352.7 TQ0352.9
DOI:
10.3969/ j. issn.1671 -6833.2015.01. 008
文献标志码:
A
摘要:
以某化纤厂的废碱液和木浆粕为主要原料制备羧甲基纤维素(CMC) ,选择梯度升温和添加助剂的方式来提高CMC的性能,提出了一种新的处理化纤厂废碱液和制备CMC的方法.为了提高CMC的性能,用单因素试验法考察了醚化过程梯度升温方式、碱化阶段添加尿素、硅酸钠以及醚化阶段添加四硼酸钠等因素的影响,优化出较佳的工艺条件:醚化反应三阶梯度升温(一阶温度55℃、二阶温度70 ℃、三阶温度80 ℃ ) ,碱化阶段分别添加质量分数为3%的尿素和质量分数为5%的硅酸钠,醚化阶段添加质量分数为6%的四硼酸钠.在此条件下制备出的CMC的黏度为2 486.7 MPa·s、取代度为0.65、酸黏比为0.416、盐黏比为0.547,较未改性前的上述性能分别提高了97.17% 、23.63% ,57.53%和45.55 % .
Abstract:
In view of the actual problem and the characteristics of carboxymethyl cellulose ( CMC) synthesisprocess,the waste liquor of the viscose fiber industry as main raw materials with wood pulp was used for pro-ducing carboxymethyl cellulose (CMC). The effect of gradient heating in ethrification process,along with theaddition of urea,sodium silicate sodium in alkalization process and the addition of tetraborate in the etherifica-tion process on the properties of the modified CMC were studied and explored by single factor test.The resultsshow that the modified CMC with the best properties were obtained by third-order heating ( first-order tempera-ture of 55 ℃,temperature of the second order of 70 ℃,and third-order temperature of 80 C ) for etherifica-tion reaction. Meanwhile, 3% urea and 5% alkaline sodium silicate were also added in alkalization process,and 6% tetraborate was added in the etherification process.The viscosity of the product CMC was up to 2486.7 MPa· s,the substitution degree was 0.65,the acid-viscosity ratio was 0.416,salt-viscosity ratio was 0.547. Compared with previous modified CMc，the indexes were promoted by 97.17%,23.63%,57.53%and 45.55 % for aboved-mentioned performances,respectively.
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