No abstract

A novel series of polymeric surfactants has been synthesized by the reaction of maleic anhydride (MA), polyethylene glycol (PEG) and phthalic anhydride (PA). The unique structural features of these surfactants have been confirmed by IR, NMR and elemental analysis. These polymeric surfactants have been found to exhibit excellent surface active properties including surface tension, low‐foaming, solubilization, and dispersant properties in disperse dye systems.

SYNOPSISThe ability of polyamide-epichlorohydrin-cellulose ( PAE-cell) to remove various acid dyes from aqueous solutions was investigated. The classes of acid dyes included the milling type, levelling type, and metal-complex type. Operational conditions such as PAE-cell type, dye type, PAE-cell particle size, dye bath flow rate, filling density in the column, initial dye concentration, pH of solution, and adsorbent mass were studied. The results show that these PAE-cell polymers exhibit better capacity for acid dye removal than some commercial activated carbons. 0 1993 John Wiley & Sons, Inc.

SYNOPSISPolyamide-epichlorohydrin-cellulose ( PAE-Cell ) can adsorb substantial quantities of several direct dyes and acid dyes from aqueous solutions using a batch process. The adsorption kinetics of these dyes on PAE-Cell was studied using Langmuir and Freundlich isotherm equations at different temperatures. Other adsorption parameters studied were initial dye concentration, the pH of the solution, particle size, treated time, and salt added. The PAE-Cell was found to have monolayer equilibrium saturation capacities of more than 500 mg dye per PAE-Cell for these anionic dyes. These results show that PAE-Cell polymers exhibit better capacity than do some types of commercial activated carbon.