Can acrylamide be grafted onto starch molecular structures through free radical polymerization?

The study details the grafting of acrylic acid and acrylamide onto starch molecular structures through free radical polymerization. This graft copolymerization enhances water absorption capacity and alters physical, morphological, and mechanical characteristics, making it a novel avenue for the chemical modification of carbohydrate polymers.

How is anionic starch-graft-polyacrylamide (S-G-Pam) prepared?

Anionic starch-graft-polyacrylamide (S-g-PAM) was prepared by alkaline hydrolysis. The hydrolytic agent (mixture of sodium carbonate and sodium hydroxide) was added to starch-graft-polyacrylamide emulsion, the concentration of the hydrolytic agent was 2.12 mol/L, and the molar ratio of sodium carbonate to sodium hydroxide was 1:1.

Can graft copolymerization of acrylic acid on starch be a renewable alternative?

Graft copolymerization of acrylic acid onto starch can provide renewable alternatives for current applications of water-soluble performance polymers from fossil resources. In our laboratory, Fenton’s reagent was mostly used as the initiator for graft copolymerization experiments, in aqueous solutions.

How to obtain stable emulsion of amphoteric starch-graft-polyacrylamide as flocculant?

4. Conclusions A stable emulsion of amphoteric starch-graft-polyacrylamide as flocculant was obtained by inverse emulsion polymerization, hydrolysis reaction and Mannich reaction subsequently. In hydrolysis reaction, both NaOH and Na 2 CO 3 were common hydrolyzing agents.

How is amphoteric starch-graft-polyacrylamide used in amination reaction?

In amination reaction, the amphoteric starch-graft-polyacrylamide with high amination degree and high viscosity was yielded through control of the material addition method and the reaction conditions. The stable emulsion of the amphoteric product could be used directly and there was no need for preparation of a powder.

Can acrylic acid be grafted onto starch?

Noordergraaf, I.W.; Bronswijk, S.; Heeres, H.J. Graft copolymerization of acrylic acid onto starch: Improving the grafting performance by the development of dedicated dosage protocols. In Proceedings of the 10th European Congress of Chemical Engineering, Nice, France, 27 September–1 October 2015. [Google Scholar]