纤维素浆粕在NMMO/H2O中的溶胀行为研究

纺织学报 ›› 2014, Vol. 35 ›› Issue (2): 116-0.

纤维素浆粕在NMMO/H2O中的溶胀行为研究

李春花^1，2 徐纪纲² 程春祖² 王荣民¹ 赵庆章²

1. 西北师范大学生态环境相关高分子材料教育部重点实验室
2. 中国纺织科学研究院生物源纤维制造技术国家重点实验室

收稿日期:2013-11-05 修回日期:2013-07-26 出版日期:2014-02-15 发布日期:2014-02-17
通讯作者: 徐纪纲 E-mail:xu_jigang@163.com
基金资助:
国家973项目;十二五科技支撑计划

Study on swelling behaviors of cellulose pulp in NMMO/H₂O

Received:2013-11-05 Revised:2013-07-26 Online:2014-02-15 Published:2014-02-17

摘要/Abstract

摘要： 通过纤维素浆粕在溶胀过程中厚度的变化以及溶胀前后结晶程度的变化，研究了纤维素浆粕在NMMO/H2O中的溶胀行为。详细研究了溶胀工艺条件NMMO/H2O溶液的浓度、溶胀温度及时间对纤维素浆粕厚度的影响，结果表明随着NMMO浓度、溶胀温度的升高，纤维素浆粕厚度变化明显，溶胀效果较好。用X-射线衍射法分析了纤维素浆粕溶胀前后的衍射峰的变化，发现NMMO/H2O能进入纤维素的结晶区，改变纤维素的结晶程度，且NMMO/H2O溶液浓度越大、温度越高，纤维素的结晶度变化越明显。

关键词: NMMO/H2O, 纤维素, 溶胀, 厚度, 结晶度

Abstract: The swelling behaviors of cellulose in N-methyl morpholine solution (NMMO/H2O) were investigated by measuring the thickness crystallinity changes before and after swelling of cellulose pulp in NMMO/H2O. The effects of concentration, temperature and time of swelling conditions in NMMO/H2O solution during swelling of cellulose pulp were discussed. The results showed that cellulose swelling rate was increased with increasing the NMMO concentration and swelling temperature, and the swelling effect is better. Based on X- ray diffraction analysis of the crystallinity of the swelling cellulose pulp, it was concluded as following: NMMO/H2O can change the crystallinity of cellulose pulp. The more crystallinity the of cellulose pulp was decreased with increasing the concentration of NMMO/H2O solution, and it was influenced by temperature.

Key words: , NMMO/H₂O, cellulose, thickness, swelling, crystallinity

李春花徐纪纲程春祖王荣民赵庆章. 纤维素浆粕在NMMO/H2O中的溶胀行为研究[J]. 纺织学报, 2014, 35(2): 116-0.

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