| 纤维素在NMMO水溶液中的溶胀过程及影响因素分析 |
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| 引用本文： | 杨彦菊,汤云潞,张慧慧,杨革生,邵惠丽. 纤维素在NMMO水溶液中的溶胀过程及影响因素分析[J]. 合成纤维, 2019, 48(1): 8-11,24 |
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| 作者姓名： | 杨彦菊 汤云潞 张慧慧 杨革生 邵惠丽 |
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| 作者单位： | 纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620;纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620;纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620;纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620;纤维材料改性国家重点实验室,东华大学材料科学与工程学院,上海201620 |
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| 基金项目： | 国家重点研发计划项目课题 |
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| 摘 要： | 采用显微镜观察和离心表征的方法,通过控制单一因素变量探讨溶胀时间、溶胀温度、N-甲基吗啉-N-氧化物(NMMO)溶液质量分数等对纤维素在NMMO水溶液中溶胀行为的影响。显微镜观察的结果表明:在溶胀初期,溶剂迅速渗透到纤维素中使单纤维直径变大,20 min后纤维素溶胀接近饱和,纤维直径基本不再变化;随着NMMO质量分数的增加、溶胀温度的升高,纤维素纤维的溶胀率以及吸液率增加,表明纤维素溶胀效果更好。
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| 关 键 词： | 纤维素 NMMO水溶液 溶胀 偏光显微镜 |
Analysis on Swelling and Affecting Factors of Cellulose in NMMO Aqueous Solution |
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| Affiliation: | ,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University |
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| Abstract: | The effects of swelling time, swelling temperature and concentration of N-methylmorpholine-Noxide(NMMO) aqueous solution on the swelling behavior of cellulose were investigated by the methods of microscopic observation and centrifugal characterization. The results from microscopic observation showed that the solvent rapidly penetrated into the cellulose to increase the diameter of the single fiber in the initial stage of swelling, after 20 minutes, the fiber diameter did not change substantially. With the increase of NMMO concentration and the temperature, the swelling ratio and the absorbency characteristics of cellulose fibers increased, which illustrated that the swelling effect of cellulose was better. |
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| Keywords: | cellulose NMMO aqueous solution swelling polarizing microscope |
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