膜科学与技术

芦苇纤维素在NMMO中的溶解及其再生前后性能的研究

作者：李文江¹，²，吕玲娟¹，谢飞¹，²，陈民芳¹

单位： 1.天津理工大学材料科学与工程学院,天津 300384；2.海宁朗赛纤维科技有限公司，浙江314000

关键词：芦苇；纤维素；N-甲基吗啉-N-氧化物（NMMO）；性能

出版年,卷(期):页码： 2014,34(5):49-52

摘要：

选用来源广泛、价格低廉、可再生的芦苇作为纤维素的主要来源，以N-甲基吗啉-N-氧化物（NMMO）为溶剂，利用傅里叶红外光谱（FTIR）、X射线衍射（XRD）等着重研究了芦苇纤维素在NMMO中溶解前后结构与性能的变化，并探究了芦苇纤维素的成膜性、力学性能及耐酸耐碱性。结果发现：芦苇纤维素溶解后，聚合度较溶解前有所降低，晶型由纤维素Ⅰ变成了纤维素Ⅱ。此外，芦苇纤维素在含量为4-8%时成膜性能较好，且在浓度为8%时力学性能最好，并具有较好的耐酸耐碱性。

In this study, the reed, which is one of the most abundant and useful renewable material, was chosen as the raw material of cellulose, and its environmentally friendly regenerated cellulose membranes were successfully prepared by dissolving the reed cellulose in N-methylmorpholine-N-oxide (NMMO) solution. The structural differences between reed cellulose and cellulose regenerated from NMMO had been investigated by using Fourier transform infrared (FT-IR) spectroscopy and X-ray diffraction, and the results showed that the crystalline of reed cellulose transforms completely from celluloseⅠto celluloseⅡafter regeneration from NMMO solution. In addition, when the content of reed cellulose was between 4 and 10, the membranes presented good film-forming properties, especially, the membranes consisted of 8% reed cellulose, which not only had smooth surface, but also presented good Mechanical properties and strong acid-alkali resistance.

李文江(1970－),男,辽宁人,博士，教授,主要从事纳米生物光子学与化学工程研究。通讯人电话：13502098517， E-mail: liwj@tjut.edu.cn

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