Synthesis of perfectly sulfonated sodium polystyrene sulfonate over a wide molar mass range via reversible-deactivation radical polymerization

被引:13
作者
Balding, Paul [1 ,5 ]
Cueto, Rafael [2 ,3 ]
Russo, Paul S. [1 ,4 ,5 ]
Gutekunst, Will R. [1 ,5 ]
机构
[1] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA
[2] Louisiana State Univ, Dept Chem, Baton Rouge, LA 70803 USA
[3] Louisiana State Univ, Macromol Studies Grp, Baton Rouge, LA 70803 USA
[4] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
[5] Georgia Inst Technol, GTPN, Georgia Tech Polymer Network, Atlanta, GA 30332 USA
关键词
aqueous synthesis; gel-permeation chromatography coupled multiangle light scattering; high molecular weight; parametric optimization; polyelectrolyte; reversible-deactivation radical polymerization; sodium polystyrene sulfonate; MOLECULAR-WEIGHT; COMPOSITE MEMBRANES; BLOCK-COPOLYMERS; AQUEOUS-SOLUTION; SET-LRP; ATRP; WATER; POLYMERS; EXCHANGE; DISPROPORTIONATION;
D O I
10.1002/pola.29415
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
An aqueous reversible-deactivation radical polymerization (RDRP) approach is used to synthesize sodium polystyrene sulfonate directly from functionalized monomers to give uniformly and completely sulfonated materials. Reproducible gram scale syntheses are achieved under simple one pot reaction conditions at ambient temperatures, and full monomer conversions are achieved within approximately 3 h. Reaction variables such as pH, sodium chloride concentration, and methanol cosolvent have a significant effect on the molecular weights (M-n approximate to 20,000-400,000 g.mol(-1)) obtained by gel permeation chromatography coupled multiangle light scattering. Observed dispersities were reasonably narrow: D approximate to 1.05-1.3. A parametric optimization, rather than direct variation of the monomer to initiator ratio, resulted in some of the highest molecular weight polymers by an RDRP approach. Linear progression between M-n and monomer conversion occurs at a neutral reaction pH, which results in narrow polymer molecular weight distributions, along with high end-group fidelity as demonstrated with chain extension reactions. (c) 2019 Wiley Periodicals, Inc.
引用
收藏
页码:1527 / 1537
页数:11
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