采用N-甲基吡咯烷酮的苎麻纤维柔软处理
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摘要
为提升苎麻纤维的柔软性,采用N-甲基吡咯烷酮(NMP)对其进行处理。探讨不同NMP质量分数、处理时间和温度对苎麻纤维强伸性能和柔软性能的影响,并借助X射线衍射仪、红外光谱仪和扫描电子显微镜对苎麻纤维进行表征与分析。结果表明:当NMP质量分数、处理时间或温度任一因素增加,苎麻纤维的断裂伸长率随之增加,而断裂强度随之降低;当NMP质量分数或处理时间增加时,苎麻纤维的断裂回转数会先增加后减少,当处理温度升高时,断裂回转数会先增加后保持稳定;在NMP质量分数为15%,处理时间为60 min,处理温度为80℃的较佳工艺条件下,处理后苎麻纤维的结晶度从80. 37%降至70. 19%,而其化学基团保持不变,纤维表面纵向沿竖纹出现劈裂。
In order to improve the softness of ramie fibers,N-methyl-2-pyrrolidone( NMP) was used to treat them. The effects of NMP mass fraction,time and temperature on the mechanical properties and softness of ramie fibers were studied. Meanwhile, the ramie fibers were characterized by X-ray diffractometer,infrared spectrometer and scanning electron microscope. Results show that when the NMP mass fraction,treatment time or temperature increases,the elongation of ramie fibers increases,and the tensile strength decreases. When the NMP mass fraction or the time increases,the twisting number of ramie fiber increases first and then decreases. When temperature increases,the twisting number increases quickly and then keeps stable. The optimum treatment conditions are NMP mass fraction of 15%,time of60 min and temperature of 80 ℃,the crystallinity of treated ramie fibers decreases from 80. 37% to70. 19%,but the chemical groups remain unchanged,and cracks appear along the vertical lines on the surface of ramie fibers.
In order to improve the softness of ramie fibers,N-methyl-2-pyrrolidone( NMP) was used to treat them. The effects of NMP mass fraction,time and temperature on the mechanical properties and softness of ramie fibers were studied. Meanwhile, the ramie fibers were characterized by X-ray diffractometer,infrared spectrometer and scanning electron microscope. Results show that when the NMP mass fraction,treatment time or temperature increases,the elongation of ramie fibers increases,and the tensile strength decreases. When the NMP mass fraction or the time increases,the twisting number of ramie fiber increases first and then decreases. When temperature increases,the twisting number increases quickly and then keeps stable. The optimum treatment conditions are NMP mass fraction of 15%,time of60 min and temperature of 80 ℃,the crystallinity of treated ramie fibers decreases from 80. 37% to70. 19%,but the chemical groups remain unchanged,and cracks appear along the vertical lines on the surface of ramie fibers.
引文
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[10]熊亚,张斌,郁崇文,等. DMSO/TEAC对苎麻纤维柔软处理探究[J].中国麻业科学,2017,39(1):44-49.XIONG Ya,ZHANG Bin,YU Chongwen,et al. The softing property of ramie fiber treated by DMSO/TEAC[J].Plant Fiber Science in China,2017,39(1):44-49.
[11]吕陈,张斌,郁崇文,等. N,N-二甲基乙酰胺对苎麻纤维处理的研究[J].东华大学学报(自然科学版),2017,43(2):198-204.LV Chen,ZHANG Bin,YU Chongwen,et al. Study on the performance of ramie fibers treated with N, Ndimethlacetamide[J]. Journal of Donghua University(Natural Science Edition),2017,43(2):198-204.
[12] HIROYUKI Kono, SAYAKA Fujita. Biodegradable superabsorbent hydrogels derived from cellulose by esterification crosslinking with 1, 2, 3, 4-butanetetracarboxylic dianhydride[J]. Carbohydrate Polymers,2012,87(4):2582-2588.
[13]郑虹,介兴明,于海军,等.新型ɑ-纤维素/聚砜共混超滤膜的制备与性能研究[J].膜科学与技术,2015(6):1-8.ZHENG Hong, JIE Xingming, YU Haijun, et al.Preparation and characterization ofα-cellulose/polysulfoneblend UF membrane[J]. Membrane Science and Technology,2015(6):1-8.
[14] LI Zhaoling,MENG Chaoran,YU Chongwen. Analysis of oxidized cellulose introduced into ramie fiber by oxidation degumming[J]. Textile Research Journal,2015,85(20):2125-2135.
[2]张明明,张斌.苎麻纤维柔软改性研究进展[J].上海纺织科技,2015,43(4):1-4.ZHANG Mingming,ZHANG Bin. The research progress of soft modification of ramie fiber[J]. Shanghai Textile Science&Technology,2015,43(4):1-4.
[3]徐海燕.国内苎麻纤维化学改性现状研究[J].河南工程学院学报(自然科学版),2012,24(2):20-24.XU Haiyan. A review:chemical modification on ramie fiber in China[J]. Journal of Henan Institution of Engineering(Natural Science Edition),2012,24(2):20-24.
[4]岳军,熊立堃,苏立炜,等.液固相法纤维素氨基甲酸酯的合成与表征[J].高分子材料科学与工程,2015,31(11):44-49.YUE Jun,XIONG Likun,SU Liwei,et al. Synthesis and characterization of cellulose carbamate by liquidsolid phase[J]. Polymer Materials Science and Engineering,2015,31(11):44-49.
[5]王革辉,王芳,赵涛.纤维素酶处理对高支纯苎麻织物性能的影响[J].纺织学报,2010,31(9):45-48.WANG Gehui,WANG Fang,ZHAO Tao. Effects of enzymatic treatment on properties of high count ramie fiber[J]. Journal of Textile Research,2010,31(9):45-48.
[6]喻红芹,张琦,李虹,等.苎麻纤维改性方法的对比分析[J].河南工程学院学报(自然科学版),2015,27(3):1-4.YU Hongqin,ZHANG Qi,LI Hong,et al. Comparison of modification methods of ramie fiber[J]. Journal of Henan Insititution of Engineering(Natural Science Edition),2015,27(3):1-4.
[7]张华,冯家好,李俊.液氨处理对苎麻织物结构和性能的影响[J].印染,2008(7):5-8.ZHANG Hua,FENG Jiahao,LI Jun. Effect of liquid ammonia and caustic mercerization on structures and properties of ramie fiber[J]. China Dyeing&Finishing,2008(7):5-8.
[8]胡仁志,张波兰,张永金,等.离子液体改性苎麻纤维性质研究[J].武汉科技学院学报,2004,17(5):25-28.HU Renzhi,ZHANG Bolan,ZHANG Yongjin,et al.Study on the properties of ramie fiber modified with ionic liquid[J]. Journal of Wuhan University of Science and Engineering,2004,17(5):25-28.
[9]张明明,张斌,郁崇文. N-甲基吗啉-N-氧化物处理苎麻纤维工艺的优化[J].纺织学报,2015,36(12):64-68.ZHANG Mingming, ZHANG Bin, YU Chongwen.Optimizing of process for treating ramie fiber by Nmethylmorpholine-N-oxide[J]. Journal of Textile Research,2015,36(12):64-68.
[10]熊亚,张斌,郁崇文,等. DMSO/TEAC对苎麻纤维柔软处理探究[J].中国麻业科学,2017,39(1):44-49.XIONG Ya,ZHANG Bin,YU Chongwen,et al. The softing property of ramie fiber treated by DMSO/TEAC[J].Plant Fiber Science in China,2017,39(1):44-49.
[11]吕陈,张斌,郁崇文,等. N,N-二甲基乙酰胺对苎麻纤维处理的研究[J].东华大学学报(自然科学版),2017,43(2):198-204.LV Chen,ZHANG Bin,YU Chongwen,et al. Study on the performance of ramie fibers treated with N, Ndimethlacetamide[J]. Journal of Donghua University(Natural Science Edition),2017,43(2):198-204.
[12] HIROYUKI Kono, SAYAKA Fujita. Biodegradable superabsorbent hydrogels derived from cellulose by esterification crosslinking with 1, 2, 3, 4-butanetetracarboxylic dianhydride[J]. Carbohydrate Polymers,2012,87(4):2582-2588.
[13]郑虹,介兴明,于海军,等.新型ɑ-纤维素/聚砜共混超滤膜的制备与性能研究[J].膜科学与技术,2015(6):1-8.ZHENG Hong, JIE Xingming, YU Haijun, et al.Preparation and characterization ofα-cellulose/polysulfoneblend UF membrane[J]. Membrane Science and Technology,2015(6):1-8.
[14] LI Zhaoling,MENG Chaoran,YU Chongwen. Analysis of oxidized cellulose introduced into ramie fiber by oxidation degumming[J]. Textile Research Journal,2015,85(20):2125-2135.
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