高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (6): 990.doi: 10.7503/cjcu20160833

• 中国第四届静电纺丝大会专题研究论文 • 上一篇    下一篇

原生纤维素静电纺丝的调控

汪绍军1,2, 罗婷1,2, 张效敏1,2(), 舒友3, 朱锦4, 苏胜培1,2()   

  1. 1. 湖南师范大学化学化工学院, 资源精细化与先进材料重点实验室 长沙 410081
    2. 石化新材料与资源精细利用国家地方联合工程实验室, 长沙 410081
    3. 怀化学院, 聚乙烯醇纤维材料制备技术湖南工程实验室, 怀化 418000
    4. 中国科学院宁波材料技术与工程研究所, 宁波 315201
  • 收稿日期:2016-11-25 出版日期:2017-06-10 发布日期:2017-05-23
  • 作者简介:联系人简介: 张效敏, 男, 博士, 讲师, 主要从事纤维素氢键组装及功能化研究. E-mail: zhangxm@hunnu.edu.cn;苏胜培, 男, 博士, 教授, 主要从事高分子复合材料研究. E-mail: sushengpei@yahoo.com
  • 基金资助:
    湖南省教育厅科学研究基金(批准号: 15K080)和怀化学院聚乙烯醇纤维材料制备技术湖南工程实验室基金(批准号: HGY201610)资助.

Manipulation of Native Cellulose Eletrospinning from LiCl-DMAc System

WANG Shaojun1,2, LUO Ting1,2, ZHANG Xiaomin1,2,*(), SHU You3, ZHU Jin4, SU Shengpei1,2,*()   

  1. 1. Key Lab for Fine Processing of Resources and Advanced Materials of Hunan Province, Changsha 410081, China
    2. National and Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources,Hunan Normal University, Changsha 410081, China
    3. Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material,Huaihua University, Huaihua 418000, China
    4. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences,Ningbo 315201, China
  • Received:2016-11-25 Online:2017-06-10 Published:2017-05-23
  • Contact: ZHANG Xiaomin,SU Shengpei E-mail:zhangxm@hunnu.edu.cn;sushengpei@yahoo.com
  • Supported by:
    This paper is supported by the Scientific Research Fund of Hunan Provincial Education Department, China(No.15K080), the Fund of Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material, Huaihua University, China(No.HGY201610).

摘要:

通过电纺非溶剂调控的纤维素溶液, 制备出纤维素电纺纤维. 在N,N-二甲基乙酰胺(DMAc)-氯化锂(LiCl)溶解纤维素体系中, 以DMAc和N,N-二甲基甲酰胺(DMF)作为非溶剂, 添加到高浓度的纤维素溶液中制备电纺溶液. 考察添加非溶剂对纤维素溶液性质和电纺纤维形貌的影响. 结果表明, 添加非溶剂有助于提升纤维素溶液的可纺浓度, 获得分散性较好的电纺纤维, 其中DMF效果最好. 添加非溶剂降低了纤维素溶液的黏度, 使纤维素溶液可纺浓度提高; 添加非溶剂改变了电纺溶液的稳定性, 获得了分散良好的纳米纤维, 从而有助于纤维素射流在电纺过程中快速固化成型.

关键词: 纤维素, 静电纺丝, N,N-二甲基乙酰胺-氯化锂, 非溶剂, 纳米纤维

Abstract:

Cellulose nanofibers have been successfully fabricated by electrospinning of cellulose/lithium chloride-dimethylacetamide(LiCl-DMAc) solutions manipulated by nonsolvents. DMAc and dimethyl formamide(DMF) are used as the nonsolvents which is added into the concentrated cellulose solution. The effects of nonsolvents on the properties of cellulose solution and the morphology of electrospun cellulose nanofibers were investigated. Addition of nonsolvents is beneficial to increase the electrospinnable concentration of cellulose solution and obtain well-distributed nanofibers. The result of manipulating by DMF is better than DMAc. The improvement in electrospinnable concentration correlates well with the addition of nonsolvents which can decrease the viscosity of cellulose solution. The morphology of electrospun cellulose nanofibers is related to the rate of jet coagulation which is affected by the stability of cellulose solution during electrospinning.

Key words: Cellulose, Electrospinning, Lithium chloride/dimethylacetamide, Nonsolvent, Nanofibers

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