PAN链缠结的影响因素及其对PAN/DMSO溶液流变行为的影响

doi:10.19491/j.issn.1001-9278.2020.04.001

中国塑料 ›› 2020, Vol. 34 ›› Issue (4): 1-5.DOI: 10.19491/j.issn.1001-9278.2020.04.001

• 材料与性能 • 下一篇

PAN链缠结的影响因素及其对PAN/DMSO溶液流变行为的影响

邢洋洋¹^,²^,³, 王冲³, 付中禹¹, 刘士禹¹, 张会轩¹^,²()

^1.长春工业大学化学工程学院，长春 130012
^2.中国科学院长春应用化学研究所，长春 130022
^3.吉林铁道职业技术学院，吉林吉林 132200

收稿日期:2019-11-12 出版日期:2020-04-26 发布日期:2020-04-26

Effect of Influencing Factor of PAN Chain Entanglement on Rheological Behavior of PAN/DMSO Solution

Yang XING¹^,²^,³, Chong WANG³, Zhongyu FU¹, Shiyu LIU¹, Huixuan ZHANG¹^,²()

^1.School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China
^2.Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
^3.Jilin Railway Technology College, Jilin 132200, China

Received:2019-11-12 Online:2020-04-26 Published:2020-04-26
Contact: Huixuan ZHANG E-mail:zhanghx@mail.ccut.edu.cn

摘要/Abstract

摘要：

采用旋转流变仪对聚丙烯腈/二甲基亚砜（PAN/DMSO）溶液进行了流变学测试，探究了表观黏度（η_α）、储能模量、损耗模量、损耗正切角与温度、浓度以及剪切情况之间的关系，明确了PAN链缠结对PAN/DMSO溶液流变行为及其分子结构的影响，探究了PAN链缠结与浓度、温度及剪切速率之间的关系。结果表明，预剪切可以有效地拆除部分PAN链的缠结，使PAN/DMSO溶液η_α降低，且温度升高及浓度降低时剪切作用对η_α的影响作用减小，流变稳定性提高。

关键词: 聚丙烯腈, 流变, 链缠结

Abstract:

The rheological behaviors of polyacrylonitrile (PAN)/dimethyl sulfoxide (DMSO) solutions were measured with a rotary rheometer, and the relationships of apparent viscosity (η_α), storage modulus, loss modulus and loss tangent angle with the temperature, concentration and shearing conditions were investigated. The effect of PAN chain entanglement on the rheological behavior and molecular structure of PAN/DMSO solution were studied. The results indicated that pre?shear could effectively make the PAN chains disentangle to some extent and therefore resulted in a decrease of the η_α of PAN/DMSO solution. Moreover, the effect of shear on the η_α was reduced with increasing the temperature and decreasing the concentration. As a result, the rheological performance of PAN/DMSO solution was improved.

Key words: polyacrylonitrile, rheology, chain entanglement

中图分类号:

TQ 325.1

邢洋洋, 王冲, 付中禹, 刘士禹, 张会轩. PAN链缠结的影响因素及其对PAN/DMSO溶液流变行为的影响[J]. 中国塑料, 2020, 34(4): 1-5.

Yang XING, Chong WANG, Zhongyu FU, Shiyu LIU, Huixuan ZHANG. Effect of Influencing Factor of PAN Chain Entanglement on Rheological Behavior of PAN/DMSO Solution[J]. China Plastics, 2020, 34(4): 1-5.

图/表 6

图1 浓度为20 %的PAN/DMSO溶液在不同温度下ηα与γ˙的关系曲线 Fig.1　The relationship between ηα and γ˙ of PAN/DMSO solution with a concentration of 20 % at different temperatures

图2 浓度为20 %的PAN/DMSO溶液在不同温度下经4次循环剪切下ηα与γ˙的关系曲线

Fig.2 Relationship between ηα and γ˙of PAN/DMSO solution with 20 % concentration at different temperatures after 4 cycles of shearing

图3 不同浓度的PAN/DMSO溶液在55 ℃下，经4次循环剪切时ηα与γ˙的关系曲线

Fig.3 Relationship between ηα and γ˙at different concentrations of PAN/DMSO solution at 55 °C after 4 cycles of shearing

图4 不同浓度的PAN/DMSO溶液在不同温度下的logG'?logG''曲线及其曲线斜率与温度的关系曲线

Fig.4 LogG'?logG '' curves of different PAN/DMSO solution at different temperatures and the relationship between the slope of the curve and temperature

图5 浓度为20 %的PAN/DMSO溶液在不同温度下经稳态剪切和未经稳态剪切下的G'与ω的关系曲线

Fig.5 Relationship between storage modulus G' and shear frequency ω of 20 % PAN/DMSO solution with and without steady?state shearing at different temperatures

图6 浓度为20 %的PAN/DMSO溶液在25 ℃下经稳态剪切和未经稳态剪切下的损耗正切角tanδ与剪切频率ω的关系曲线 Fig.6　Relationshop between loss tangent angle tanδ and shear frequency ω of 20 % PAN / DMSO solution under steady state shear and non?steady?state shear at 25 ℃

参考文献 11

1	BAJAJ P, BAHRAMI S H, SEN K, et al. Thermal and Rheological Behavior of Acrylonitrile–Carboxylic Acid Copolymers and Their Metal Salt Complexes[J]. Journal of Applied Polymer Science, 1999, 74(3): 567⁃582.
2	MUKHAMEDZHANOVA M, SHIRSHOVA N, KHAMRAKULOV G. Rheological Properties of Concentrated Solutions of Ternary Acrylonitrile Copolymers[J]. Fibre Chemistry, 2000, 32(5): 340⁃343.
3	NEWCOMB B A, GULGUNJE P V, LIU Y, et al. Polyacrylonitrile Solution Homogeneity Study by Dynamic Shear Rheology and the Effect on the Carbon Fiber Tensile Strength[J]. Polymer Engineering & Science, 2016, 56(3):361⁃370.
4	RAGHAVAN V, GULGUNJE P V, GUPTA K K, et al. Correlation Between Inhomogeneity in Polyacrylonitrile Spinning Dopes and Carbon Fiber Tensile Strength[J]. Polymer Engineering and Science, 2019, 59(3):478⁃482.
5	王鹏. PAN/DMSO溶液的流变性能及干湿纺可纺性能研究[D]. 上海：东华大学, 2005.
6	EOM Y, PARK Y, JUNG Y M, et al. Effects of Conformational Change of Polyacrylonitrile on the Aging Behavior of the Solutions in N, N ⁃Dimethyl Formamide[J]. Polymer, 2017, 108:193⁃205.
7	刘峰钰, 王成国, 朱波等. 聚丙烯腈/二甲基亚砜纺丝原液流变性及流变方程拟合[J]. 高分子材料科学与工程, 2011, 27(1): 57⁃60.
	LIU F Y, WANG C G, ZHU B, et al. Rheology and Equation Simulation of PAN/DMSO Solution [J]. Polymer Science and Engineering, 2011, 27(1):57⁃60.
8	QIAN B, LIN W, HE J, et al. The Role of Macromolecular Entanglements in the Gel Spinning Process and Properties of High Performance Polyacrylonitrile Fibers[J]. Journal of Polymer Engineering, 1995, 15(3/4): 327⁃345.
9	李龙, 孔德玉, 陈旺, 等. PAN 溶液纺丝过程分子链形变及取向的力场相关性研究[J]. 高分子通报, 2014 (10): 98⁃102.
	LI L, KONG D Y, CHEN W, et al. The Force Field Dependence of the Deformation　and Orientation of Molecular Chains during the Spinning of PAN/DMSO Solution[J]. Polymer Bulletin, 2014 (10): 140⁃143.
10	陈方泉, 陈惠芳, 潘鼎. 聚丙烯腈/二甲基亚砜溶液的流变学性质[J]. 高分子材料科学与工程, 2005, 21(3): 140⁃143.
	CHEN F Y, CHEN H F, PAN D. Rheological Behavior of PAN/DMSO Solution [J]. Polymer Science and Engineering, 2005, 21(3): 140⁃143.
11	KIM J K, SON H W, LEE Y B, et al. The Effect of Phase⁃Separated Morphology on the Rheological Properties of Polystyrene/Poly(vinyl methyl ether) Blend[J]. Journal of Polymer Science Part B Polymer Physics, 1999, 37(9): 889⁃906.

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PAN链缠结的影响因素及其对PAN/DMSO溶液流变行为的影响

Effect of Influencing Factor of PAN Chain Entanglement on Rheological Behavior of PAN/DMSO Solution

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