Preparation and characterization of nanocomposite
Preparation and characterization of nanocomposite hydrogels based on polyacrylamide for enhanced oil recovery applications Reihaneh Zolfaghari Polymer Engineering Department, Amirkabir University, Tehran, Iran
Abstract. Equipment for dissolving polyacrylamide powder to obtain an aqueous solution thereof for enhanced oil recovery comprises first and second powder storage tanks for storing polyacrylamide powder under nitrogen atmosphere; a gas conveyor unit for carrying the polyacrylamide powder from the first storage tank to the second storage tank by nitrogen gas flow; a constant powder supply unit
US4069161A - Preparation of aqueous solutions
Polymer gel, e.g. polyacrylamide gel, is chilled until frozen and is ground up in a mill. The frozen particles of the polymer gel are then dissolved in water to form an aqueous solution having good efficiency in the recovery of petroleum from formations.
In a further report, Jiang et al. investigated the preparation of polyacrylamide by ATRP using a chloride initiator and tetramethylethylenediamine (TMEDA) as ligand.26,27 Low dispersity polyacrylamides (Đ = 1.19−1.57) were obtained in aqueous and mixed aqueous media; however, similar to Jewrajka and Mandal’s work, monomer conversion was found
Preparation and characterization of nanocomposite
Preparation and characterization of nanocomposite hydrogels based on polyacrylamide for enhanced oil recovery applications. Reihaneh Zolfaghari. Polymer Engineering Department, Amirkabir University, Tehran, Iran (Na‐MMT) clay aqueous solutions with chromium (III).
Hitherto, there is no study on the combination of Fe 3 O 4 nanoparticles, chitosan, and PAAm for the preparation of composite hydrogels for the adsorption of dyes from aqueous solutions to the best of our knowledge. In this research, Fe 3 O 4 magnetic nanoparticles are synthesized in situ in the PAAm/CS hydrogel matrixes. Fourier transform
METHOD FOR PREPARING AN AQUEOUS POLYACRYLAMIDE SOLUTION
A method for preparing an aqueous polyacrylamide solution, where the method includes: hydrating acrylonitrile in water in presence of a biocatalyst capable of converting acrylonitrile to acrylamide so as to obtain an acrylamide solution; directly polymerizing the acrylamide solution so as to obtain a polyacrylamide gel; and directly dissolving the polyacrylamide gel by addition of water so as
Patents by Inventor John M. Witheford . Preparation of aqueous polyacrylamide solutions for enhanced oil recovery. Patent number: 4605689 The process may additionally be adapted to the drilling site or to other on site operations requiring polyacrylamide solutions such as water treating, mining or paper making.
Preparation of chitosan-graft-polyacrylamide magnetic
Preparation of chitosan-graft-polyacrylamide magnetic composite microspheres for enhanced selective removal of mercury ions from water. lead(II), and mercury(II) ions from aqueous solutions in respective single, binary, and ternary metal systems. Compared with chitosan magnetic composite microsphere (CS-MCM) without modification, CS-PAM-MCM
Polyacrylamide production methods are solution polymerization, emulsion and inverse emulsion polymerization and radiation polymerization method. 1 solution polymerization. Aqueous solution polymerization is the traditional method of production of polyacrylamide, using this method can produce polyacrylamide gels and powder products.
Preparation of cationic surfactant-modified kaolin
In the current work, we have reported a cationic surfactant-modified Ethiopian kaolin for improved adsorption of Cr(VI) from aqueous solution. The raw kaolin was modified by treating with CTAB to enhance the adsorption properties. The crystal structure and vibrational analysis of CTAB–kaolin were investigated by Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffraction (p
Polyacrylamide and polyacrylic acid polymers: 1986-11-11: Jarovitzky et al. 4481316: Method for inhibiting the degradation of an aqueous solution of an acrylamide polymer in a petroleum recovery process: 1984-11-06: Kanda et al. 4317759: Stabilized aqueous solutions of acrylamide polymers: 1982-03-02: Kanda et al. 4141842
- What is polyacrylamide gel electrophoresis?
- Polyacrylamide gel electrophoresis provides very high resolution of DNA molecules 10–3,000 bp long. Under the appropriate conditions, DNA molecules differing in size by only a single base pair can be resolved (learn more: Nucleic acid electrophoresis education ).
- Does polyacrylamide gel electrophoresis identify thiol-protected gold nanoclusters?
- Polyacrylamide gel electrophoresis separation and identification of various thiol-protected gold nanoclusters. PAGE separation of Au nanoclusters stabilized with (A) SG, (B) (PG)SH, (C) (SA)SH and their negative-ion ESI mass spectra and optical absorption spectra of Au:S (PG) (1–6) and Au:S (SA) (7 and 8) clusters.
- What is blue native polyacrylamide gel electrophoresis?
- Blue Native Polyacrylamide Gel Electrophoresis: A Powerful Diagnostic Tool for the Detection of Assembly Defects in the Enzyme Complexes of Oxidative Phosphorylation. In: Wong, Ph.D., LJ. (eds) Mitochondrial Disorders. Methods in Molecular Biology, vol 837.
- What are the different types of gel electrophoresis?
- Horizontal (agarose) or vertical (polyacrylamide) gel electrophoresis of nucleic acids and protein using tanks, chambers, casters, plates, spacers, combs, power supplies, and other accessories. Explore Thermo Fisher Scientific’s suite of products for all your electrophoresis needs.
