Hydrophobically associating polyacrylamides and their
The other type, called graft or comb-like, in which the hydrophobic units are incorporated as lateral groups. Of particular interest in this class are hydrophobically associating polyacrylamides (HAPAMs), derived from polyacrylamide by introducing a relatively low amount (generally less than 2 mol%) of hydrophobic pendent groups .
Hydrophobically associating polyacrylamides and their partially hydrolyzed derivatives prepared by post-modification. 1. Synthesis and characterization
Hydrophobically associating polyacrylamides and their
Hydrophobically associating polyacrylamides and their partially hydrolyzed derivatives prepared by post-modification. 2. Properties of non-hydrolyzed polymers in pure water and brine (PAM) and its hydrophobically modified analogues (HAPAMs) in both pure water and brine were compared by means of viscometry, light scattering and fluorescence
Hydrophobically associating polyacrylamides (HAPAMs) or hydrophobically associating hydrolyzed polyacrylamides (HHAPAMs) are generally prepared by micellar copolymerization which leads to a blocky distribution of hydrophobes and drifted compositions.
Properties of hydrophobically associating polyacrylamides
Hydrophobically associating polyacrylamides and their partially hydrolyzed derivatives prepared by post-modification. 2. Properties of non-hydrolyzed polymers in pure water and brine. Polymer 2005, 46 (22) , 9283-9295. DOI: 10.1016/j.polymer.2005.07.054.
Properties of hydrophobically associating polyacrylamides: influence of the method of synthesis Alain Hill , Francoise Candau , and Joseph Selb Macromolecules , 1993 , 26 (17), pp 4521–4532
Adsorption of Hydrophobically Associating Polyacrylamides
Soil Science Society of America Journal 2006, 70 (1) , 297-304. DOI: 10.2136/sssaj2005.0200. Yujun Feng, Laurent Billon, Bruno Grassl, Guillaume Bastiat, Oleg Borisov, Jeanne François. Hydrophobically associating polyacrylamides and their partially hydrolyzed derivatives prepared by post-modification. 2.
A composition is composed of a hydrophobically modified polyacetal-polyether (HM-PAPE) or comb hydrophobically modified polyacetal-polyether (comb HM-PAPE) and a viscosity suppressing agent of cyclodextrins or derivatives thereof. A method for improving the pumpability and pourability of aqueous solutions of HM-PAPE or comb HM-PAPE is provided by admixing a cyclodextrin with the HM-PAPE or
Complex Reactive Fluids Laboratory – CPG
Annual meeting of North America Thermal Analysis Society, New Mexico, USA September 14-17, 2014. Shahzad Kamal Muhammad, Ibnelwaleed A. Hussein, Abdullah S. Sultan, and Usamah A. Al-Mubaiyedh. (2014). Rheological study of a novel hydrophobically associating polyacrylamide surfactant system for enhanced oil recovery.
The invention provides formulations for facilitating the removal of oil from a surface using a chisel composition, wherein the chisel composition includes a polymer having one or more binding points with a high affinity for the surface, and one or more hydrophilic segments that form a hydrophilic coating on the surface, rendering the surface water-wet and thereby facilitating the removal of
Smart Polymers and Coatings Obtained by Ionizing Radiation
Gamma radiation has been shown particularly useful for the functionalization of surfaces with stimuli-responsive polymers. This method involves the formation of active sites (free radicals) onto the polymeric backbone as a result of the exposition to high-energy radiation, in which a proper microenvironment for the reaction among monomer and/or polymer and the active sites takes place, thus
Mixtures of an associating polymer and a degradable surfactant. The addition of surfactant to a solution of an “associating” hydrophobically modified polymer generally gives rise to a dramatic change in viscosity, but the sign and magnitude of the change depends on the amount of surfactant added. The result is the development of
- What is the price of polyacrylamide (anionic grade) in 2025?
- Thus, after the conclusion of the first quarter of 2025, PAM prices (Anionic Grade) were assessed at USD 3400 per MT. For the Quarter Ending December 2025 North America The market prices of Polyacrylamide moved in a downward direction in the North American market during the fourth quarter of 2025, as per ChemAnalyst Research Team Data.
- How much is polyacrylamide anionic grade in Germany?
- The latest quarter-ending price for Polyacrylamide Anionic Grade in Germany was USD 3425/MT FD Hamburg, underscoring the sustained upward momentum in pricing driven by consistent industrial demand and regulatory pressures. The quarter was devoid of major plant shutdowns or operational disruptions, ensuring a stable supply amid rising demand.
- How much does polyacrylamide cost in the US?
- North America The prices of Polyacrylamide declined in the USA market during the third quarter of 2025, with cost ranging at USD 2252/tonne Polyacrylamide Anionic Grade FOB Texas with a quarterly decline of 11.1% as per recorded by ChemAnalyst pricing team data.
- What is the price of polyacrylamide anionic grade FOB Qingdao?
- The latest price for Polyacrylamide Anionic Grade FOB Qingdao in China for Q4 2025 is USD 1120/MT. Overall, the market dynamics for PAM in the APAC region were influenced by the global reduction in crude oil production, oversupply of products, and weakened demand from key sectors.
