How to determine acrylamide in polyacrylamide?

1971 (Germany)Obsolete method for determining acrylamide in polyacrylamide by' using standard, liquid column- chromat graphy. The polymer was dissolved in water, and its viscosity was decreased by adding electrolytes and by mechanical shearing. The mixture was separated on a Dowex 50W-X8 resin in the protonated form; the polymer eluted

What is the detection limit of acrylamide copolymer?

The detection limit reported by their method was about 7 mg/l, and the range was 7 to 400 mg/l. The method required approximately 25 ml of sample to complete both determinations. A significant advantage of this method is that it deter- mines both the degree of hydrolysis and the acrylamide copolymer concentration.

How to determine the degree of hydrolysis in polyacrylamide?

The determination of the degree of hydrolysis in poly (acrylamides): simple methods using C 13 N.M.R., and elementary analysis Polyacrylamide are used extensively in enhanced oil recovery, drilling fluids, and in gels for profile control. This review enables drilling engineers…

How do you determine acrylamide content in water?

Although numerous methods of chemical analysis exist for determining the acrylamide content of a polyacrylamide formulation, no standardized method has been adopted for directly determining trace concentrations of acrylamide in water (e.g., at the sub-parts-per-billion level, ng-micrograms/L).

Can a UV spectrophotometer measure polyacrylamide concentration?

This study presents a method for quantification of polyacrylamide concentration using an in-line UV–vis spectrophotometer that can generate real-time data. Absorbance spectra of seven polymers were established in the wavelength range of 191.5–750 nm and the highest absorbance was recorded at 191.5 nm for all polymers.

How much water is retained by a polyacrylamide sample?

They reported that water was retained by the polya- crylamide samples up to about 250, but did not use any further decomposition data to estimate the degree of hydrolysis. TGA analysis requires the use of dry polymer sam- ples. If aqueous samples are used, they must be free of salts and the polymer concentration must be known.