Zobrazeno 1 - 10
of 25
pro vyhledávání: '"N. M. Zabivalova"'
Autor:
N. M. Zabivalova, M. F. Lebedeva, Elena N. Popova, V. K. Lavrent’ev, A. M. Bochek, Vladimir E. Yudin
Publikováno v:
Polymer Science, Series A. 63:63-76
The rheological properties of dilute and moderately concentrated solutions of methyl cellulose–chitosan blends in aqueous solutions of acetic and succinic acids are studied. Using dynamic mechanical, thermogravimetric, and X-ray diffraction analyse
Publikováno v:
Fibre Chemistry. 50:391-395
The conditions for producing composite nanofibers of chitosan and polyamide PA 6/66-3 using needleless electrospinning from polymer solutions in HOAc (75%) were studied. The mixed solutions became more viscous and the average diameter of spun fibers
Autor:
E. N. Vlasova, N. M. Zabivalova, I. V. Serov, A. M. Bochek, V. K. Lavrent′ev, Boris Volchek, N. P. Novoselov
Publikováno v:
Fibre Chemistry. 47:247-250
Studies of the solubility of chitin from North Sea shrimp shells in aqueous NaOH solutions with urea and thiourea additives showed that chitin was totally dissolved in aqueous NaOH (10%) + urea (5%) + thiourea (5%). A thermally reversible gel formed
Autor:
V. K. Lavrent′ev, A. M. Bochek, Iosif V. Gofman, N. M. Zabivalova, I. V. Serov, M. F. Lebedeva, Elena N. Popova
Publikováno v:
Fibre Chemistry. 47:183-186
Composite films were prepared from aqueous mixtures of the sodium salt of carboxymethylcellulose and arabinogalactan. Their physicomechanical properties, structural organization, and thermal stability were studied. The region of compositions in which
Autor:
E. N. Vlasova, I. V. Serov, V. K. Lavrent′ev, N. M. Zabivalova, N. P. Novoselov, Boris Volchek, A. M. Bochek
Publikováno v:
Fibre Chemistry. 47:166-170
The solubility of wood cellulose of various molecular weights in aqueous NaOH solutions with added urea and thiourea was studied with variable temperature, solvent composition, and sequence of dissolution stages. It was shown that cellulose of averag
Autor:
N. M. Zabivalova, Iosif V. Gofman, V. K. Lavrent’ev, M. F. Lebedeva, Elena N. Popova, A. M. Bochek
Publikováno v:
Polymer Science Series A. 57:430-436
The stress-strain properties of composite films obtained from aqueous solutions of methylcellulose with arabinogalactan are studied. The structural organization and thermal stability are investigated via X-ray diffraction, dynamic mechanical analysis
Autor:
N. M. Zabivalova, Iosif V. Gofman, E. F. Panarin, Vladimir E. Yudin, A. M. Bochek, V. K. Lavrent’ev, Irina I. Gavrilova, I. V. Abalov, Elena N. Popova
Publikováno v:
Polymer Science Series A. 56:158-168
The rheological properties of dilute and moderately concentrated solutions of methyl cellulose blends with poly(N-methyl-N-vinylacetamide) in water and dimethylacetamide are studied, and the stressstrain characteristics of the composite films based o
Autor:
Elena N. Popova, V. K. Lavrent’ev, Valentina A. Petrova, N. M. Zabivalova, N. P. Novoselov, A. M. Bochek, A. A. Murav’ev, Vladimir E. Yudin
Publikováno v:
Russian Journal of Applied Chemistry. 86:1913-1917
Rheological properties of solutions of cellulose mixed with chitin in 1-butyl-3-methylimidazolium acetate were studied. Positive and negative deviations of values of the viscosity and activation energy E a of viscous flow from additive values were ob
Autor:
N. M. Zabivalova, Boris Volchek, V. K. Lavrent’ev, E. N. Vlasova, A. M. Bochek, A. A. Murav’ev, Valentina A. Petrova, N. P. Novoselov, M. Zaborski
Publikováno v:
Russian Journal of Applied Chemistry. 85:1718-1725
Solubility of cellulose, chitin, and chitosan in seven ionic liquids of varied structure was studied. It was found that pressure, temperature, and amount of an aprotic diluent (dimethyl sulfoxide) affect the dissolution of cellulose and chitin in an
Autor:
N. M. Zabivalova, A. M. Bochek, Vladimir E. Yudin, Iosif V. Gofman, B. Z. Volchek, I. I. Osovskaya, I. V. Abalov, N. G. Brusilovskaya, V. K. Lavrent’ev, Elena N. Vlasova
Publikováno v:
Polymer Science Series A. 53:1167-1174
The rheological properties of carboxymethyl cellulose aqueous solutions containing small amounts of purified montmorillonite and bentonite nanoparticles are studied. The viscosity of mixed solutions decreases after addition of 1 wt % nanoparticles. X