What is FTIR spectra of polyacrylamide (PAM)?

Fourier transform infrared (FTIR) spectra of PAM in pure water (a) and brine (b). The water-soluble polymer PAM (polyacrylamide) is used in enhanced oil recovery (EOR) operations. It is pumped into water injection wells to increase the viscosity of the injected water and in turn to direct more oil towards production wells.

What is the FTIR spectrum of acrylamide?

The FTIR spectrum of the AAm shows the existence of the N-H symmetric and asymmetric stretch indicated by the absorption peaks at 3171 and 3343 cm -1 . The absorption bands at 1664 cm -1 (C=O) and 1605 cm -1 (C=C) are characteristics of the acrylamide unit .

Which ternary composite is synthesized by free-radical polymerization of acrylamide?

A cerium oxide nanoparticles (CeO2-NPs)/graphene oxide (GO)/polyacrylamide (PAM) ternary composite was synthesized through free-radical polymerization of acrylamide in the presence of CeO2 nanoparticles and GO in an aqueous system.

What is a typical presentation of 1 H NMR spectra of acrylamide?

A typical presentation of 1 H NMR spectra of of the polymer is show in (Figures 3). The peaks at 1.2 -1.4 ppm, 2.4 -2.6 ppm, and 3.2 -3.6 ppm denote the methyne, methylene, and amide proton in cationic poly- acrylamide (CPAM) structure. … Superporous Hydrogel Composites of Acrylamide Using Starch-Silicone Dioxide Coprecipitate as Composite Agent.

What is the FT-IR spectrum of padl2.5 hydrogel?

As shown in Figure 5, the FT-IR spectrum of the pADL2.5 hydrogel exhibited two broad peaks at 3346 cm −1 and 3190 cm −1 , as well as a signal at 1654 cm −1 , corresponding to the N-H stretching and the C=O stretching vibration of AAM and PAAM, respectively .

What is the absorption band of acrylamide?

The absorption bands at 1664 cm -1 (C=O) and 1605 cm -1 (C=C) are characteristics of the acrylamide unit . FTIR spectrum of NR shows the characteristic peak of the (-C=C-) group at 1666 cm -1 . …