Abstract
Rheological characteristics of solutions of Bombyx mori chitosan with various molecular masses and the graft copolymer of chitosan and vinylcaprolactam during shear flow are studied. A decrease in the molecular mass of chitosan results in a substantial narrowing of the areas of hysteresis loops and their shift to higher shear rates and lower shear stresses. The presence of vinylcaprolactam blocks in a macromolecule is favorable for increasing the chain flexibility and intermolecular interactions.
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