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Get Price- Do polyacrylamide hydrogels undergo hydrolysis?
- Polyacrylamide (PAAm) hydrogels are widely used and studied. Their feature of hydrolysis is often ignored. When PAAm hydrogels are stored under alkaline conditions, they can undergo a hydrolysis reaction, which changes them from neutral hydrogels to polyelectrolyte hydrogels, resulting in significant volumetric increases.
- Can a dangling amide group be hydrolyzed to form an acrylic acid?
- The dangling amide group of the PAM polymer could be hydrolyzed to form an acrylic acid that is subject to the easier interaction with cations. Chemistry regarding the amide hydrolysis is very rich and has been considered as an important modeled reaction for the enzymatic cleavage of peptide bonds , , .
- How does pH affect the hydrolysis reaction of amide group?
- The hydrolysis reaction of the amide group (AM) to form acrylic acid (AA) is significantly affected by the pH of solution and the presence of cationic species such as Ca 2+. Without catalyzed, PAM is thermally stable with transition barriers as high as 50 kcal/mol.
- How do cations affect the hydrolysis of Pam/HPAM polymers?
- These cations not only can form complexes (gels or precipitates) with the carboxylic groups with HAPM to alter their rheological and phase properties, they can also catalyze the amide hydrolysis reaction to increase the degree of hydrolysis of PAM/HPAM polymers.
