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 are the optical properties of polyacrylamide (PAM) solution?

The optical properties of polyacrylamide (PAM) solution play an important role in measuring PAM concentration of the solution in the polymer flooding of oilfield based on optical methods.

Do polyacrylamide hydrogels have a od stretch?

The dynamics and structure of water in polyacrylamide hydrogels (PAAm-HG), polyacrylamide, and acrylamide solutions are investigated using ultrafast infrared experiments on the OD stretch of dilute HOD/H 2 O and molecular dynamics simulations.

Does polyacrylamide adsorb with Langmuir spectroscopy?

Conclusions The adsorption of a low molecular unmodified polyacrylamide (Polymer-N) and a low molecular weight hydroxyl-substituted polyacrylamide (Polymer-H) onto the surface of talc has been studied using in situ ATR–FTIR spectroscopy. Adsorption isotherms reveal that both polymers adsorb with the typical Langmuir isotherm behaviour.

Does polyacrylamide adsorb on talc?

The adsorption of a low molecular weight unmodified polyacrylamide (Polymer-N) and a hydroxyl-substituted polyacrylamide (Polymer-H) onto talc was studied using in situ particle film ATR–FTIR spectroscopy in the multiple internal reflection mode.

What is the FT-IR spectrum of pure Pam?

The FT-IR spectrum of pure PAM shows the relative strong vibration mode at 3359 cm −1 corresponded to the symmetrical stretching vibration absorption peak of NH 2 group on the PAM chains, and the shoulder peak at 3193 cm −1 was attributable to NH 2 stretching in the PAM molecules for the hydrogen-bonding state.