Polyacrylamide (PAM) is a polymer widely used in sewage treatment, papermaking, oil extraction and other fields. Based on its ionic properties, polyacrylamide can be divided into cationic polyacrylamide (CPAM) and anionic polyacrylamide (APAM). These two types of polyacrylamide have significant differences in structure, uses and properties.
Structural differences
Cationic polyacrylamide: It is made by copolymerizing cationic monomers and acrylamide and has a positive charge. Its ionicity is measured by its charge density.
Anionic polyacrylamide: A group that becomes negative after hydrolysis, such as -COOH, has a negative charge. Its ionicity is measured by its degree of hydrolysis.
Performance and use
Cationic polyacrylamide (CPAM)
Scope of application: Suitable for negatively charged wastewater treatment, especially sludge dehydration.
Features: It has good flocculation effect and can effectively neutralize the negative charges in wastewater to form large flocs, thereby achieving solid-liquid separation.
Application areas: sewage treatment, sludge dewatering, paper industry, etc.
Anionic polyacrylamide (APAM)
Scope of application: Suitable for the treatment of positively charged wastewater, especially suspended solids with coarse suspended particles (0.01-1mm).
Features: It has a higher molecular weight and can form longer molecular chains, thereby achieving better flocculation effect1.
Application areas: sewage treatment, paper industry, oil extraction, etc.
