Polyacrylamide (PAM) is a polymer widely used in water treatment, papermaking, mineral processing, oil extraction and other fields. The following are the physicochemical properties, use characteristics and applicability of polyacrylamide:
Appearance: Polyacrylamide usually comes in the form of a white powder or granules.
Solubility: It dissolves rapidly in water to form a colloidal solution, but is insoluble in most organic solvents.
Molecular weight: It has an extremely high molecular weight (generally between millions and tens of millions).
Ionic properties: According to the ionic characteristics, it is divided into three types: non-ionic, cationic, and anionic.
Stability: In the dry state, polyacrylamide is stable, but it is susceptible to degradation due to mechanical shear and high temperature in aqueous solution.
Flocculation: In water treatment, polyacrylamide can make suspended particles aggregate into flocs, which is easy to remove.
Thickening effect: It has a good thickening effect in aqueous solution.
Reduced friction: It is used in oil extraction to reduce the frictional resistance of water and oil.
Selective adsorption: Depending on the ionic PAM, it can specifically adsorb certain substances.
Temperature sensitivity: The properties of polyacrylamide may be affected by temperature.
Water treatment: As a flocculant, it is used for tap water purification, sewage treatment, etc.
Paper industry: Used as a reinforcing agent, fixing agent and additive to improve the properties of paper.
Mineral processing: It is used in the beneficiation process of ores, such as coal, iron ore, etc.
Oilfield Chemistry: It is used as drilling mud additive, oil well acidification, etc. in oilfield exploitation.
Soil improvement: In agriculture, it can be used as a soil conditioner to improve the water retention ability of the soil.
Since the application of polyacrylamide involves many fields, its exact use and effect may vary depending on the specific application environment and requirements.
Polyacrylamide