Rheological Behaviors of Sodium Polystyrene Sulfonate in 1-Allyl-3-methylimidazolium Chloride

	Rheological Behaviors of Sodium Polystyrene Sulfonate in 1-Allyl-3-methylimidazolium Chloride
	Liu, Fu-yong 1,2; Zhang, Bao-qing 2; Zhang, Jun 2; Liu, Chen-yang 2
刊名	ACTA POLYMERICA SINICA
	2016-09-20
期号	9 页码:1263-1272
关键词	Polyelectrolyte Ionic Liquids (ILs) Electrostatic interaction Rheological behaviors
英文摘要	Effect of electrostatic interactions between these ions and the charged monomer of polyelectrolyte on the chain conformation and the rheological behavior is a fundamentally important issue for engineering application of polyelectrolyte/ILs systems. Rheological behavior of a polyelectrolyte, sodium polystyrene sulfonate (NaPSS), in 1-allyl-3-methylimidazolium chloride (AmimCl) has been investigated and compared to that in AmimCl/H2O co-solvent solutions. Mole of chain segment unit per liter (mol/L) is used to define the concentration of NaPSS. The results show that, NaPSS in AmimCl solution shows different rheological behaviors from which in salt-free aqueous solution, added salt aqueous solution and neutral polymer in ionic liquid solution. Rheological behaviors of NaPSS in AmimCl/H2O co-solvent solutions are also different from each other. With increasing AmimCl concentration, intrinsic viscosity [eta] of NaPSS in AmimCl/H2O decreases, indicating the decline of chain coil size of NaPSS. NaPSS in AmimCl/H2O co-solvent show the rheological behaviors changing from salt-free polyelectrolyte solution to neutral polymer in theta solvent with increasing AmimCl concentration. When the solvent changes into pure AmimCl, NaPSS in AmimCl solution is divided into two concentration regimes in the range from 0.007 mol/L to 0.8 mol/L. Dynamic frequency sweep shows that NaPSS chain does not overlap in the concentration regime bellow 0.29 mol/L, where the power laws for the concentration dependence of specific viscosity and terminal relaxation time are eta(sp) similar to c(p)(1.4) and tau similar to c(p)(0), respectively, similar to theoretical prediction for salt-free polyelectrolyte solutions in entangled regime. The concentration regime above 0.29 mol/L is considered as semidilute un-entangled regime, where the power laws for the concentration dependence of specific viscosity and terminal relaxation time are eta(sp) similar to c(p)(3.5) and tau similar to c(p)(1.9), respectively, closing to theoretical prediction for neutral polymer in good solvents in entangled regime. The unique phenomenon may be caused by the high electrostatic coupling of monomer-ion and monomer-monomer.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35654]
专题	化学研究所_工程塑料实验室
作者单位	1.Shanxi Univ, Inst Environm Sci, Taiyuan 030006, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fu-yong,Zhang, Bao-qing,Zhang, Jun,et al. Rheological Behaviors of Sodium Polystyrene Sulfonate in 1-Allyl-3-methylimidazolium Chloride[J]. ACTA POLYMERICA SINICA,2016(9):1263-1272.
APA	Liu, Fu-yong,Zhang, Bao-qing,Zhang, Jun,&Liu, Chen-yang.(2016).Rheological Behaviors of Sodium Polystyrene Sulfonate in 1-Allyl-3-methylimidazolium Chloride.ACTA POLYMERICA SINICA(9),1263-1272.
MLA	Liu, Fu-yong,et al."Rheological Behaviors of Sodium Polystyrene Sulfonate in 1-Allyl-3-methylimidazolium Chloride".ACTA POLYMERICA SINICA .9(2016):1263-1272.