Study of P(AM-NVP-DMDA) hydrophobically associating water-soluble terpolymer

Abstract

ABSTRACT:A new kind of hydrophobically associating water-soluble terpolymer P(AM-NVP-DMDA) was synthesized by free radical terpolymerization. Compared with micellar terpolymerization, this terpolymerization can be conducted in aqueous solution in absence of external surfactant, because the hydrophobic monomer is surface active. Synthesis, structure, and solution properties of P(AM-NVP-DMDA) terpolymer were studied, including its electrolyte effect, rheological behavior, temperature dependence of viscosity, dilute solution property, and the polymer-alkali, polymer-surfactant interaction. The terpolymer shows strong hydrophobic effect, and the terpolymer aqueous brine solution exhibits high viscosity at low polymer concentration. Incorporation of N-vinyl-pyrrolidone into the terpolymer causes an improvement in thermal stability of the terpolymer. The transmission electron photomicrograph analysis of the terpolymer indicates that the presence of the microphase separation of the terpolymer in aqueous solution plays an important role in the viscosification efficiency of the terpolymer.

Novel multi-stimuli responsive sodium alginate-grafted-poly(N-isopropylacrylamide) copolymers: II. Dilute solution properties

“…Associative polymers based on polysaccharides have been widely studied since the pioneering work of Landoll (1982). The hydrophobically associated water-soluble polymers contain a small proportion of hydrophobic groups, usually in the form of pendant side chains or terminal groups, which raise of increasing interest for a wide variety of industrial applications, such as: flocculants, thickening agents in oil recovery, latex paints, cosmetics, due to the advantage offered both by polyelectrolyte and hydrophobic groups effect (Bock, Valint, & Pace, 1988;Bock, Varadaraj, Schulz, & Maurer, 1994;Kevin & Taylor, 2003;Schulz & Glass, 1991;Ye & Huang, 1999;Zhang, Da, & Hogen-Esch, 1991).…”

Temperature resistance and salt tolerance of starch derivatives containing sulfonate groups

“…The viscosity of the BSTSS solutions exhibited a smaller and gradual decrease, whereas the CMS solution exhibited a prompt decrease because the molecular chains of BSTSS were difficult to curl up cased by the large steric hindrance within the BSTSS molecules. Therefore, the viscosity of the BSTSS solution was only slightly affected by the increase in temperature . With increased steric hindrance caused by the increasing DS of the BSTS, the degree of decrease in viscosity became increasingly smaller.…”

Preparation and performance evaluation of hydrophobically associating polymer anti‐water channeling agent for oil well cement

“…When the additive amount of SMAL is 0.9%, the two‐interface bonding strength and channeling pressure of annular cement slurry are respectively 7.1 and 6.7 MPa. This indicates that SMAL makes the cement slurry have a good water invasion resistance, and the larger the dosage is, the better the water invasion resistance will be, and the better the anti‐channeling ability of the subsequent solidified cement ring will be 33,35 …”

“…This indicates that SMAL makes the cement slurry have a good water invasion resistance, and the larger the dosage is, the better the water invasion resistance will be, and the better the anti-channeling ability of the subsequent solidified cement ring will be. 33,35…”