Controlled Oxidation of Dextran for Evolution of Polyether Segment Bearing Pendant Carboxyl Groups for Corrosion Inhibition Applications

Oyaizu, Kenichi; Yamaguchi, Aritomo; Hayashi, Tateki; Nakamura, Yukiaki; Yoshii, Daisuke; Ito, Yuji; Yuasa, Makoto

doi:10.1295/polymj.38.343

Cited by 9 publications

(3 citation statements)

References 27 publications

(23 reference statements)

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“…Dextran is a bacterial polysaccharide consisting of glucose monomer,1 which is normally derived from the bacteria Leuconostoc mesenteroides (strain B‐512F), and usually has the structure shown in Scheme 2–5. Dextrans with different weight‐average molecular weight ( M w ) values can be produced by hydrolysis and fractionation.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic properties of aqueous dextran solutions

Xue-lin¹,

Li²,

Zhang³

et al. 2008

J of Applied Polymer Sci

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The hydrodynamic performance of aqueous dextran solutions, including the rheological and thixotropic properties, were investigated. Three kinds of dextrans with different molecular weights were employed to examine the effects of the molecular weight, concentration, temperature, and so forth on the hydrodynamic properties of aqueous dextran solutions. The results showed that an aqueous solution of a dextran with a high molecular weight of 5.223 Â 10 5 at a high concentration of 30 wt % had pseudoplastic properties, in contrast to the conclusions of other researchers finding that aqueous dextran solutions were Newtonian liquids. The viscosity of the aqueous dextran solutions decreased with temperature, and the activation energy was calculated to be 16,849.2 J/mol with a 10 wt % dextran (weight-average molecular weight ¼ 5.223 Â 10 5 ) solution. V

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Section: Introductionmentioning

confidence: 99%

Hydrodynamic properties of aqueous dextran solutions

Xue-lin¹,

Li²,

Zhang³

et al. 2008

J of Applied Polymer Sci

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“…5 Dextran has also found applications in nanoscience, which enlarged its practical use and value. 6 In academic research, it has been exploited for the study of cellular micropinocytosis 7 and used to make materials for advanced in vivo imaging techniques such as magnetic resonance imaging (MRI), 8,9 positron emission tomography (PET) imaging, 9 in photodynamic therapy (PDT) 10,11 as a corrosion inhibitor, 12 and many others.…”

Section: ■ Introductionmentioning

confidence: 99%

No Catalyst Added Hydrogen Peroxide Oxidation of Dextran: An Environmentally Friendly Route to Multifunctional Polymers

Пронина

Vorotnikov

Pozmogova

et al. 2020

ACS Sustainable Chem. Eng.

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The paper demonstrates a "greener" oxidation of dextran polymer of various molecular masses, the component of many industrially and pharmaceutically important materials, by aqueous H 2 O 2 in a no catalyst added setting that produced a multifunctional oxidized dextran. Specifically, on the top of common functional groups (hydroxo, carbonyl, and carboxylic acids), the freshly peroxide oxidized dextran had also a significant number of peroxo-groups, which endowed the polymer with significant cytotoxic properties, as demonstrated on a larynx carcinoma cell line. We also have shown that the peroxo-groups could be easily removed in an alkaline media to yield nontoxic oxidized dextran polymers.

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“…Therefore, the origin of the pH shift can be attributed to the photo oxidation of dextran, which leads to the formation of acidic byproducts. [32,33] The degradation of dextran could be observed via size exclusion chromatography (SEC) that showed a decrease in molar mass of the emulsion constituents with irradiation time (Figure S20, Supporting Information). Interestingly, a fast decrease of molar mass is observed at the beginning of the reaction, while only minor changes are observed in later stages of the reaction.…”

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confidence: 99%

Graphitic Carbon Nitride Stabilized Water‐in‐Water Emulsions

Zhang

Frank

Kumru

et al. 2020

Macromol. Rapid Commun.

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Aqueous multiphase systems have attracted a lot of interest recently espeically due to target applications in the biomedical field, cosmetics, and food. In turn, water‐in‐water Pickering emulsions are investigated frequently. In here, graphitic carbon nitride (g‐CN) stabilized water‐in‐water Pickering emulsions are fabricated via the dextran and poly(ethylene glycol)‐based aqueous two‐phase system. Five different derivatives of g‐CN as the Pickering stabilizer are described and the effect of g‐CN concentration on droplet sizes is investigated. Stable emulsions (up to 16 weeks) are obtained that can be broken on purpose via various approaches, including dilution, surfactant addition, and most notably light irradiation. The novel approach of water‐in‐water emulsion stabilization via g‐CN opens up considerable advances in aqueous multiphase systems and may also introduce photocatalytic properties.

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Controlled Oxidation of Dextran for Evolution of Polyether Segment Bearing Pendant Carboxyl Groups for Corrosion Inhibition Applications

Cited by 9 publications

References 27 publications

Hydrodynamic properties of aqueous dextran solutions

Hydrodynamic properties of aqueous dextran solutions

No Catalyst Added Hydrogen Peroxide Oxidation of Dextran: An Environmentally Friendly Route to Multifunctional Polymers

Graphitic Carbon Nitride Stabilized Water‐in‐Water Emulsions

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