Effects of chemical functional groups on the polymer
The aim of this study is to investigate the role of polymer chemical functional groups in adsorption onto titania pigment particles. Four polymers, polyacrylic acid and three modified polyacrylamides, have been carefully chosen in this study. The functional groups are acrylamide and hydroxyl and carboxylate groups of varying density.
The effects of polymer functional group and solution pH on stability of colloidal Al 2 O 3 water suspension were studied. Both the nonionic polymers: polyethylene glycol (PEG), polyethylene oxide (PEO) and the ionic ones: polyacrylic acid (PAA), polyacrylamide (PAM), polyvinyl alcohol (PVA) were used in the experiments.
Effect of functional groups of polyacrylamide
Fractions of polyacrylamide (PAM) and polyacrylic acid (PAA) of different molecular weights obtained by fractionation of polydisperse samples were investigated. The effect of molecular weight and functional groups of the polymers on their adsorption densities and the surface charge of TiO 2 were studied using adsorption and potentiometric
Effect of functional groups of polyacrylamide and polyacrylic acid on their adsorption onto TiO2 surface Chibowski, Stanislaw; Abstract. Publication: Journal of Colloid and Interface Science. Pub Date: December 1990 DOI: 10.1016/0021-9797(90)90365-U Bibcode: 1990JCIS..140..444C
Unveiling the mechanisms of how cationic polyacrylamide
Effect of polyacrylic acid and acrylic acid on WAS anaerobic fermentation In this work, it was measured that the concentrations of cPAM, polyacrylic acid and acrylic acid in the semi-continuous reactor fed with sludge with 12 g/kg TSS cPAM were 64.9 ± 4.2, 82.7 ± 5.2 and 39.1 ± 3.6 mg/L, respectively ( Fig. S2 ).
A novel polyacrylamide–polyacrylic acid copolymer hydrogel (PAM–PAA) was found to be selective for the transition metals Cu 2+ and Cd 2+, over alkali and alkaline earth metals, and also suitable for use with the diffusive gradients in thin-films technique (DGT) used for environmental analysis of natural waters. The PAM–PAA hydrogel was
Effect of the type of polymer functional groups
Effect of the type of polymer functional groups on the structure of its film formed on the alumina surface – Suspension stability Article in Reactive and Functional Polymers 72(11):791–798
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Polyacrylamide
Polyacrylamide (abbreviated as PAM) is a polymer with the formula (-CH2CHCONH2-). It has a linear-chain structure. PAM is highly water-absorbent, forming a soft gel when hydrated. In 2008, an estimated 750,000,000 kg were produced, mainly for
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The use of polyacrylamide flocculants in mineral processing has been reviewed recently by Moody [5]. In the present work preliminary experiments showed that the addition of polyacrylamide (PAM) to
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- Is polyacrylamide a cationic or nonionic polymer?
- rade or bioaccumulate. Anionic polyacrylamide has a low acute toxicity concer CO-CHEMICAL PROPERTIESPolyacrylamide polymers can exist in cationic, anionic or non-ionic forms, depending on their ionic charge. The non-ionic form of polyacrylamide is generated from the basic polyme
- What type of polyacrylamide is used in oil industry?
- The polyacrylamide use can be anionic, cationic, or nonionic with various ratios of the comonomers used in the case of the anionic and cationic polymers. The anionic polyacrylamides in the oil field industry are designated by the generic name of partially hydrolyzed polyacrylamide (PHPA), although they are in actuality copolymers .
- What is an anionic polyacrylamide?
- Anionic polyacrylamides make up the largest portion of the polyacrylamide market. The polymers can be prepared over a wide range of anionic charges and molecular weights (1000 to > 20,000,000 molecular weight). The workhorse comonomer for the production of anionic polyacrylamides is acrylate salts of acrylic acid.
- Which comonomer is used for the production of anionic polyacrylamides?
- The workhorse comonomer for the production of anionic polyacrylamides is acrylate salts of acrylic acid. These anionic polymers can be prepared as various mono- and divalent metal salts and other positively charged inorganic and organic counterions of the polymerization of acrylic acid with acrylamide (see Fig. 34.4 ).
