Application of amphoteric polyacrylamide solely or with
Amphoteric polyacrylamide (AmPAM) has been widely used in the wet-end of the papermaking process as a strength additive because of its unique features. AmPAM is a typical polyampholyte, carrying both basic and acid groups along the molecular chain (Dobrynin et al. 2004). Basic and acid groups dissociate in an aqueous solution.
(TG), and scanning electron microscopy (SEM). The amphoteric polyacrylamide exhibited excellent salinity tolerance. The slow increase in apparent viscosity of the polymer with increase in salinity was interesting. The amphoteric polyacrylamide showed perfect temperature resistance in high-salinity solution.
Preparation of amphoteric polyacrylamide flocculant
Through two‐phase aqueous polymerization, amphoteric polyacrylamide (AmPAM) emulsion, as an environmental friendly flocculant for the tannery wastewater, was firstly synthesized using ammonium sulfate aqueous solution as the dispersion, using acrylamide, cationic monomer ethylene methyl propenoyl‐trimethylammonium chloride (DMC), and anionic monomer acrylic acid (AA).
1. Industrial water treatment Amphoteric polyacrylamide has been widely used for industrial water treatment, oil refinery plants and mining etc. Amphoteric polyacrylamide has a better performance and efficiency than the mono-ionic polyacrylamide, especially when the water condition is complicated, or the water condition is keep changing, because its ability to decrease the surface tension of
Amphoteric amylopectin: a novel polymeric flocculant
By grafting of polyacrylamide and subsequent hydrolysis, anionic amylopectin has been synthesized. Afterwards, a cationic moiety has been inserted both by chemical/microwave processing. The flocculation efficiency of the amphoteric amylopectin has been tested in kaolin and iron ore suspensions.
CHINAFLOC is a professional manufacturer and supplier of Acrylamide, Polyacrylamide and Flocculant in Qingdao, China. - AMPHOTERIC POLYACRYLAMIDE
Molecular weight of amphoteric polyacrylamide: How it
Amphoteric polyacrylamide (AmPAM) is a linear water-soluble polymer that has been applied in papermaking as an agent for flocculation, retention, filtration, and dry-strength improvement. However, AmPAM with different ranges of molecular weight (MW) have different properties in these processes.
Amphoteric polyacrylamide (AmPAM) [6,7] carries anionic and cationic charge group on the polymer back-bone, which can adsorb both organic and inorganic sus-pension substances. So it is more suitable to deal with occasions that other flocculants cannot treat. Comparing with cationic polyacrylamide (CPAM) and anionic polya-
Assessment of Polyacrylamide Based Co-Polymers Enhanced
A similar explanation was reported for amphoteric hydrophobically associating polyacrylamide . This kind of behavior in highly saline water makes the THERMOASSOCIATIF polymer more economical because a lower polymer consumption will be required to attain target viscosity for high salinity reservoir applications.
US5171808A US07/803,120 US80312091A US5171808A US 5171808 A US5171808 A US 5171808A US 80312091 A US80312091 A US 80312091A US 5171808 A US5171808 A US 5171808A Authority US United States Prior art keywords defined composition monomer process anionic Prior art date 1990-06-11 Legal status (The legal status is an assumption and is not a legal conclusion.
Swelling properties of particles in amphoteric
Swelling properties of amphoteric polyacrylamide (AmPAM) dispersions were investigated by measurements of apparent viscosity and particle morphology. AmPAM dispersion was prepared by dispersion polymerization in aqueous solution of ammonium sulphate.
Synthesis of Low Molecular Weight Amphoteric Polyacrylamide by Foamed Copolymerization Article in Journal of Applied Polymer Science 118(1):159 - 164 · October 2010 with 76 Reads
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