Graft polymerization of acrylamide on chitosan: Copolymer structure and properties
- 1 September 2006
- journal article
- Published by Pleiades Publishing Ltd in Polymer Science Series A
- Vol. 48 (9), 918-923
- https://doi.org/10.1134/s0965545x06090069
Abstract
Graft copolymers have been prepared through the free-radical polymerization of acrylamide in water-acetic acid solutions of chitosan in the presence of ammonium persulfate as an initiator. The effect of temperature, pH of a medium, and concentrations of initiator, chitosan, and acrylamide on the grafting kinetics and efficiency has been established. The local concentration of acrylamide in the reaction zone increases due to intermolecular hydrogen bonding between polysaccharide and monomer molecules. Copolymer films are characterized by better mechanical properties compared to those of polysaccharide. Hydrogels with good viscoelastic properties have been obtained when grafting was performed in the presence of N,N-methylenebisacrylamide as a crosslinking agent.Keywords
This publication has 7 references indexed in Scilit:
- Graft copolymerized chitosan—present status and applicationsCarbohydrate Polymers, 2005
- Study of the effect of reaction variables on grafting of polyacrylamide onto chitosanPolymer Bulletin, 2002
- Free radical degradation of chitosan with potassium persulfatePolymer Degradation and Stability, 2002
- Review of Vinyl Graft Copolymerization Featuring Recent Advances toward Controlled Radical-Based Reactions and Illustrated with Chitin/Chitosan Trunk PolymersChemical Reviews, 2001
- BLEND FILMS FROM CHITOSAN AND POLYACRYLAMIDE SOLUTIONSJournal of Macromolecular Science, Part A, 2001
- DiscussionEuropean Polymer Journal, 1998
- Homogeneous grafting reaction of vinyl pyrrolidone onto chitosanJournal of Applied Polymer Science, 1997