Synthesis and characterizations of hydrophobically associating water‐soluble polymer with nonionic surfmer

Abstract

In this article, a hydrophobically associating copolymer (2‐acrylamido)‐2‐methylpropanesulfonic acid (AMPS)/AA‐EO25C12 was synthesized by AMPS and nonionic surfmer AA‐EO25C12 through free radical copolymerization. The structure of copolymer was characterized by FT‐IR and 1H‐NMR. The properties of copolymer were studied and the results indicated that the copolymer exhibits good thickening ability due to intermolecular hydrophobic associations as the apparent viscosity of the copolymer solution increases sharply with increasing polymer concentration. Compared with homopolymer PAMPS, the rheological test indicates that the copolymer solution shows shear thickening behavior at low shear rate region. Besides, the copolymer exhibits interfacial activity as it can reduce the interfacial tension to 10° level, and ability to form emulsion with good stability, which is due to successfully introducing the structure of nonionic surfmer AA‐EO25C12 to the polymer chain. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43195.

Self-assembly properties of a temperature- and salt-tolerant amphoteric hydrophobically associating polyacrylamide

“…These side chains form hydrophobic microdomains in solution because of hydrophobic association, which leads to intramolecular and intermolecular associations. [6][7][8] In order to tolerate reservoir conditions, which are typically severe, new polymers have been designed and synthesized to achieve improved properties; these new polymers have included hydrophobically associating polymers, hyperbranched polymers, amphoteric polymers, star polymers, etc. At copolymer concentrations greater than the critical association concentration (CAC), macromolecules have an increased tendency to associate intermolecularly and can as a result form a supramolecular network.…”

Novel, rosin‐based, hydrophobically modified cationic polyacrylamide for kaolin suspension flocculation

“…Above 0.7 wt %, the apparent viscosities increased with increasing hydrophobic monomer dosage, and this was because of the increase in the degree of hydrophobic associations with increasing hydrophobic monomer content. Moreover, HMPAM exhibited stronger hydrophobic association properties than the HMPAM modified with other hydrophobic side chains (e.g., fatty alcohol, phenyl, dialkyl, or stearic acid groups), and this proved that the hydrophenanthrene structure of DMDAAC made HMPAM more hydrophobic.…”

“…The apparent viscosities of HMPAM exhibited remarkable salt‐thickening properties, as shown in Figure . The apparent viscosities of CPAM sharply decreased in the salt solution, and this was because the CPAM macromolecular chains expand in the brine solution; this led to lower hydrodynamic volumes and apparent viscosities . However, the apparent viscosities of HMPAM dramatically increased with increasing concentration of NaCl or CaCl 2 .…”

Synthesis, characterization, and solution properties of a surface‐active hydrophobically associating polymer

“…Figure illustrates the synthesis process of MAA‐EO 23 C 12 similar to the literature . About 20 mmol of EO 23 C 12 , 24 mmol of Et 3 N, and 100 mL of dry methylene chloride were added and mixed in 500 mL three‐necked, round‐bottomed flask equipped with a magnetic stirrer and a dropping funnel.…”