Polyacrylamide polymerization issues
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I am carrying out the polymerization of anionic PAM; why does the product obtained have a popcorn-like appearance and no viscosity? This post was last edited by QXZ-1966 on 2009-1-29 at 17:25.]
It’s difficult to make a judgment without knowing the specific details (such as polymerization time, changes in polymerization temperature, etc.); it seems to be a case of explosive polymerization, possibly due to an excessive proportion of additives, which leads to intramolecular and intermolecular cross-linking during polymerization and results in a lack of viscosity.
Is it darker in color? It should be undergoing explosive polymerization; if that’s the case, you can adjust the reaction temperature and the amount of initiator used.
I have also made popcorn-shaped polyacrylamide. The exact mechanism behind it is unknown, but we later overcame the issue by adjusting the amount of initiator; I think it was likely explosive polymerization
It has aggregated excessively; the amount of the last two components in the initiator is too high
It must be due to excessive polymerization; adjusting the amount of initiator can solve this problem.