What does partially hydrolyzed polyacrylamide mean?

What Does Partially Hydrolyzed Polyacrylamide Mean? Partially hydrolyzed polyacrylamide (PHPA) is a widely used polymer in the oil and gas industry due to its lesser cost and good water solubility. PHPA is used as a functional additive in water-based drilling fluids.

What is partially hydrolyzed polyacrylamide (PHPA)?

Partially hydrolyzed polyacrylamide (PHPA), consisting of neutral acrylamide and anionic acrylate groups, is suitable for use in water with <25,000 mg/L TDS 12, 15.

What are hydrophobically associating polyacrylamides (hapams)?

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 .

How to determine charge content in partially hydrolyzed polyacrylamides?

3.2.2. Hydrolysis degree Potentiometric titration is a classical way to determine charge content in partially hydrolyzed polyacrylamides . However, for the partially hydrolyzed HAPAMs used in this work, we found very limited solubilities when they are in the acid form after exchange with cationic resin.

What is hydrolyzed polyacrylamide (HPAM)?

Hydrolyzed polyacrylamide (HPAM), a derivative resulting from the hydrolysis of PAM, demonstrates significant thickening capabilities in freshwater and at relatively lower temperatures (<75 °C) due to strong intra- and inter-chain electrostatic repulsion of carboxylate groups 14.

How is partially hydrolyzed polyacrylamide treated?

Dong L, Su F, Wang YZ. Treatment of partially hydrolyzed polyacrylamide by mixed bacteria isolated from wastewater. Environmental Progress & Sustainable Energy. 2020;39 (6):e13445. doi: 10.1002/ep.13445. [DOI] [Google Scholar]