Rheological properties of solutions of chitosan and its complexes with colloid particles of a silver iodide sol

Bazunova, M. V.; Valiev, D. R.; Chernova, V. V.; Kulish, E. I.

doi:10.1134/s0965545x15050041

Cited by 12 publications

(5 citation statements)

References 7 publications

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“…The hysteresis at low temperature is more pronounced. A similar behavior was observed for chitosan in acetic acid solution by Bazunova et al (2015). The authors investigated the rheological properties and determined that the critical chitosan concentration for the formation of the fluctuation network in chitosan/acetic acid is 1.3 g L −1 .…”

Section: Characteristics Of Chitosan/dpl Solutionssupporting

confidence: 64%

“…where A is the pre-exponential factor, E a is the activation energy of flow, R is the Regnault constant, and T is the absolute temperature (Bazunova et al 2015). The calculated value of activation energy of flow is 23.16 kJ mol −1 .…”

Section: Characteristics Of Chitosan/dpl Solutionsmentioning

confidence: 99%

“…7 Viscosity as a function of temperature for the system composed of 10.0 g L −1 chitosan in DPL systems in the temperature range from 10 to 40°C was estimated via Arrhenius-Frenkel-Eyring, also referred to in the literature as De Gusman Eq. (5) (Bazunova et al 2015;Schifino 2013):…”

Section: Characteristics Of Chitosan/dpl Solutionsmentioning

confidence: 99%

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Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Porto

Campos

Garcia

2018

Environ Sci Pollut Res

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The pyroligneous liquor is a product obtained during the production of charcoal, with well-known antimicrobial activity. In this work, we characterized the physical chemistry properties of a formulation composed of distilled pyroligneous liquor (DPL), obtained from Eucalyptus grandis, and chitosan. A good interaction between the polymer and the solvent was observed. Auto-supported films were prepared with these systems and characterized with respect to their structure and photo-protection properties, water vapor permeability, and resistance to water and to thermal degradation. They present a semi-crystalline structure and are hygroscopic, but are stable under immersion for up to 7 days. The swelling degree in water is 300% in weight and the permeability to water vapor was between 30 and 45 g m −1 h −1 (for films with 80 to 10 μm, respectively). The obtained films are able to efficiently block the incident UVB and UVC radiation; the molar absorptivity decreases exponentially with increasing wavelength and is stable up to 300°C. These properties confer desirable properties to the films, obtained from these precursors of a renewable source, to be used as coatings.

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Section: Characteristics Of Chitosan/dpl Solutionssupporting

confidence: 64%

Section: Characteristics Of Chitosan/dpl Solutionsmentioning

confidence: 99%

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Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Porto

Campos

Garcia

2018

Environ Sci Pollut Res

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“…Therefore, in the solutions of polyelectrolytes there can be the area of semi-diluted solutions in which coils touch each other, but do not form the network of meshes. The presence of such an area is discussed, for example, in [19][20][21][22][23].…”

Section: Resultsmentioning

confidence: 99%

Study of Rheological Properties of Aqueous Pectin Solutions

Afanasieva

Lazdina

Titlova

et al. 2021

Вестник Башкирского Университета

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The study is devoted to the rheological behavior of aqueous solutions of pectin, a natural polysaccharide, which is a polyelectrolyte and has a spectrum of physiological activity. It is shown that the polyelectrolyte nature of the polymer introduces significant features into its rheological behavior. These features are manifested in the form of low values of the activation energy of viscous flow, in the absence of an anomaly in the viscous flow of solutions above the crossover point, as well as in the existence of a concentration region in which macromolecules are in contact with each other, but do not form a fluctuation network of meshes.

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“…1). Existence of extended area of the semidiluted solutions (at concentration bigger than c*), in which coils already adjoin with each other but grids of gearings do not form yet, is characteristic of solutions of ionic polymers [11,12].…”

Section: Resultsmentioning

confidence: 99%

Receiving Elastoviscous Systems on the Basis of Aqueous Solution of Acetate and Succinimide of Chitosan in the Presence of Polyhydric Alcohols

Lazdin¹,

Bazunova²,

Chernova³

et al. 2019

ChChT

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The rheological behavior of acetate and succinimide of chitosan in mixed solvents was investigated. It is shown that the replacement of a part of the solvent by two-or three-atom alcohols is accompanied by an increase in the relative and dynamic viscosity of the succinimide chitosan solution, an earlier formation of the net of links, a transition from viscoelastic systems to elastoviscous ones at lower polymer concentration values and an increase in the relaxation time.

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Rheological properties of solutions of chitosan and its complexes with colloid particles of a silver iodide sol

Cited by 12 publications

References 7 publications

Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Study of Rheological Properties of Aqueous Pectin Solutions

Receiving Elastoviscous Systems on the Basis of Aqueous Solution of Acetate and Succinimide of Chitosan in the Presence of Polyhydric Alcohols

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