Rheological properties of solutions of chitosan and its graft copolymer with N-vinylcaprolactam
A. A. KholmuminovInstitute of Chemistry and Physics of Polymers, Uzbek Academy of Sciences, ul. Abdully Kadyri 7b, 100128, Tashkent, UzbekistanВ. О. КудышкинInstitute of Chemistry and Physics of Polymers, Uzbek Academy of Sciences, ul. Abdully Kadyri 7b, 100128, Tashkent, UzbekistanA. M. FutoryanskayaInstitute of Chemistry and Physics of Polymers, Uzbek Academy of Sciences, ul. Abdully Kadyri 7b, 100128, Tashkent, UzbekistanO. B. AvazovaInstitute of Chemistry and Physics of Polymers, Uzbek Academy of Sciences, ul. Abdully Kadyri 7b, 100128, Tashkent, UzbekistanR. Yu. MilushevaInstitute of Chemistry and Physics of Polymers, Uzbek Academy of Sciences, ul. Abdully Kadyri 7b, 100128, Tashkent, UzbekistanС. Ш. РашидоваInstitute of Chemistry and Physics of Polymers, Uzbek Academy of Sciences, ul. Abdully Kadyri 7b, 100128, Tashkent, Uzbekistan
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Аннотация
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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