Micellar aggregation of poly(acrylamide-co-styrene): Towards 'self-removing' polymers from solution

被引：2

作者：

Muratspahic, Emina ^{[1
,2
]}

Schoeffmann, Jana

Jiang, Qixiang ^{[1
]}

Bismarck, Alexander ^{[1
,3
]}

机构：

[1] Univ Vienna, Inst Mat Chem & Res, Polymer & Composite Engn PaCE Grp, Wahringer Str 42, A-1090 Vienna, Austria

[2] Univ Vienna, Doctoral Coll Adv Funct Mat, Strudlhofgasse 4, A-1090 Vienna, Austria

[3] Imperial Coll London, Dept Chem Engn, South Kensington Campus, London SW7 2AZ, England

来源：

REACTIVE & FUNCTIONAL POLYMERS | 2023年 / 192卷

关键词：

Hydraulic fracturing fluid; Polymer friction reducers removal; Polymer -stabilised foams; Self -removing hydrophobically modified; copolymers; DRAG REDUCTION; WATER; SHALE; DESALINATION; COPOLYMERS; INTERFACE;

D O I：

10.1016/j.reactfunctpolym.2023.105732

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Polymer drag reducing agents (DRAs) are used in hydraulic fracturing processes to reduce frictional drag developed in fully turbulent pipe-flows. The drag reduction lowers energy consumption required to pump fluids. Removal and/or recovery of DRAs from the fracking fluids remains challenging causing environmental issues. We used model aqueous hydraulic fracturing fluids containing poly(acrylamide-co-styrene) P(AAm-co-St) as DRA and demonstrate an approach to 'self-remove'/recover the P(AAm-co-St) copolymers by up to 55%. This approach involves foaming of P(AAm-co-St) solutions by sparging gas into fluid (at application relevant conditions) resulting in copolymer enrichment in a generated foam phase and subsequent removal from solution. Our observations suggest a simple method to remove or recover DRAs after drag reduction applications from fracking fluids. Liquid foams containing the P(AAm-co-St) copolymer were dried and redissolved in water offering the potential to be reused for further drag reduction applications or, in case of waste, explored for other applications as emulsifier or in macroporous materials.

引用

页数：8