Abstract:

The solubility of a series of hydrophobic modified poly-acryamides (HMPAM) has been measured by conductometric technique. The influences of some structural parameters such as content of hydrophobic group, type of the anionic group, molecular weight and particle size of HMPAM on its dissolution rate has been investigated. Results show that the dissolution time of HMPAM was much longer than that of polyacryamide; the higher the content of the hydrophobic group, the slower the dissolution time; the higher the molecular weight, or the lager the particle size, the longer the dissolution time will be need. These conclusions have proved the feasibility of the way to measure the solubility of the hydrophobically associating the water-soluble polymer by conductometry method.

Key words: water-soluble polymer, hydrophobic modified polyacryamide, solubility, conductometry