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[1]王文聪,杜淑宁,王鸿博,等.低取代羟乙基纤维素溶液在酸性凝固浴的扩散动力学[J].丝绸,2018,55(10):101103.[doi:10.3969/j.issn.1001-7003.2018.10.003]
 WANG Wencong,DU Shuning,WANG Hongbo,et al.The diffusion kinetics of low-substituted hydroxyethyl cellulose solution in acidic coagulation bath[J].Journal of Silk,2018,55(10):101103.[doi:10.3969/j.issn.1001-7003.2018.10.003]
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低取代羟乙基纤维素溶液在酸性凝固浴的扩散动力学(PDF)
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《丝绸》[ISSN:1001-7003/CN:33-1122/TS]

卷:
55
期数:
2018年10期
页码:
101103
栏目:
研究与技术
出版日期:
2018-10-20

文章信息/Info

Title:
The diffusion kinetics of low-substituted hydroxyethyl cellulose solution in acidic coagulation bath
文章编号:
1001-7003(2018)10-0015-06
作者:
王文聪杜淑宁王鸿博高卫东
江南大学 a.江苏省功能纺织品工程技术研究中心;b.生态纺织教育部重点实验室,江苏 无锡 214122
Author(s):
WANG Wencong DU Shuning WANG Hongbo GAO Weidong
 a. Jiangsu Engineering Technology Research Center of Functional Textiles; b. Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi214122, China
关键词:
羟乙基纤维素NaOH溶剂醋酸水溶液扩散系数凝固条件
Keywords:
hydroxyethyl cellulose NaOH solvent acetic acid solution diffusion coefficient coagulation conditions
分类号:
TS 102.5
doi:
10.3969/j.issn.1001-7003.2018.10.003
文献标志码:
A
摘要:
纤维素及其衍生物溶解后凝固成形可制备纤维、膜或海绵等纤维素基制品,溶解和凝固过程对制品的结构和性能有重要影响。纤维素醚化改性后所得低取代羟乙基纤维(HEC)被视为是粘胶工艺的良好替代品之一,但目前缺乏对其凝固过程中扩散动力学的研究。基于Fick扩散定律,通过原位监测凝固浴中的pH值,在平面扩散模型的基础上,计算得到HEC溶液中NaOH溶剂在醋酸水溶液中的扩散系数(1.1×10-4~2.5×10-4 mm2/s)。研究发现,提高凝固温度、凝固浴浓度或降低HEC溶液固含量可不同水平促进溶剂的扩散;合适的流体力学理论扩散模型可用以研究HEC试样微观结构影响溶剂扩散行为的规律。
Abstract:
Cellulose-based products such as fibers, films and sponges could be prepared after dissolution and coagulation of cellulose or cellulose derivatives. The dissolution and coagulation process play a leading role for the properties and the structure of these products. Hydroxyethyl cellulose (HEC) with low molar substitution gained after cellulose etherification and modification is of great potential to replace the traditional viscose technology. However, there is lack of the research on the diffusion kinetics of HEC solutions in coagulation process. In this study, the diffusion coefficients of NaOH solvent in acetic acid solution were calculated by monitoring the change of pH values in the coagulation bath based on the plane diffusion model and Fick diffusion law, and the corresponding values were in the range of 1.1×10-4~2.5×10-4 mm2/s. It was found that the increase of coagulation temperature and concentration of coagulation batch, or the decrease of solid content in HEC solution would enhance the diffusion of NaOH to different degrees. Besides, the appropriate hydrodynamic diffusion models could be used to study the influence law of microstructure of HEC samples on diffusion behavior of solvents.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目:国家自然科学基金(51703085);江苏省自然科学基金(BK20170189);中央高校基本科研业务费专项资金资助(JUSRP11704)
收稿日期:2018-04-16;
修回日期:2018-00-00
作者简介:王文聪(1988—),女,讲师,博士,主要纤维素溶解及凝固成形、功能纺织材料
更新日期/Last Update: 2018-09-13