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Poly(vinyl alcohol)-borate gels as carriers of microemulsions

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913704" target="_blank" >RIV/60461373:22310/17:43913704 - isvavai.cz</a>

  • Výsledek na webu

  • DOI - Digital Object Identifier

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Poly(vinyl alcohol)-borate gels as carriers of microemulsions

  • Popis výsledku v původním jazyce

    Poly(vinyl alcohol) ? borate gels can be used as carriers of organic solvents or as carriers of aqueous microemulsions and micellar solutions of organic solvents, which can be used instead of pure and effective but toxic organic solvents. Thanks to their micellar structure, microemulsions and micellar solutions reduce toxicity of organic solvents and potential damage to the cleaned object. Using a poly(vinyl alcohol) ? borate gel as a carrier reduces evaporation of solvents and therefore reduces their environmental impact, limits penetration of cleaning components into the surface of the treated subject and provides easy control of the cleaning process due to transparency of the gel. In this paper, some basic properties of poly(vinyl-alcohol) gels and possibility of preparation of gels containing microemulsion or micellar solution are discussed. Viscosity measurements showed that viscosity of gels increases with rising molecular weight and with the degree of hydrolysis of the selected poly(vinyl alcohol). Measurements also showed that increasing content of poly(vinyl alcohol) causes non-linear increase of gel-like system viscosity whereas increasing content of sodium tetraborate causes linear increase of viscosity. Different pH values of initial aqueous phase have no effect on the pH value of the final gels owing to buffer character of sodium tetraborate and neither have any effect on a gel?s viscosity. Testing various preparation methods showed that it is possible to prepare gels containing microemulsion based on sodium dodecyl sulfate or microemulsion based on Tween 20. The possibility of preparing gels containing micellar solutions depends on amount of organic solvent in continuous phase, not on a type of used surfactants. Relation between viscosity of gels containing microemulsion or micellar solution and content of poly(vinyl alcohol) and sodium tetraborate remains the same as suggested above.

  • Název v anglickém jazyce

    Poly(vinyl alcohol)-borate gels as carriers of microemulsions

  • Popis výsledku anglicky

    Poly(vinyl alcohol) ? borate gels can be used as carriers of organic solvents or as carriers of aqueous microemulsions and micellar solutions of organic solvents, which can be used instead of pure and effective but toxic organic solvents. Thanks to their micellar structure, microemulsions and micellar solutions reduce toxicity of organic solvents and potential damage to the cleaned object. Using a poly(vinyl alcohol) ? borate gel as a carrier reduces evaporation of solvents and therefore reduces their environmental impact, limits penetration of cleaning components into the surface of the treated subject and provides easy control of the cleaning process due to transparency of the gel. In this paper, some basic properties of poly(vinyl-alcohol) gels and possibility of preparation of gels containing microemulsion or micellar solution are discussed. Viscosity measurements showed that viscosity of gels increases with rising molecular weight and with the degree of hydrolysis of the selected poly(vinyl alcohol). Measurements also showed that increasing content of poly(vinyl alcohol) causes non-linear increase of gel-like system viscosity whereas increasing content of sodium tetraborate causes linear increase of viscosity. Different pH values of initial aqueous phase have no effect on the pH value of the final gels owing to buffer character of sodium tetraborate and neither have any effect on a gel?s viscosity. Testing various preparation methods showed that it is possible to prepare gels containing microemulsion based on sodium dodecyl sulfate or microemulsion based on Tween 20. The possibility of preparing gels containing micellar solutions depends on amount of organic solvent in continuous phase, not on a type of used surfactants. Relation between viscosity of gels containing microemulsion or micellar solution and content of poly(vinyl alcohol) and sodium tetraborate remains the same as suggested above.

Klasifikace

  • Druh

    D - Stať ve sborníku

  • CEP obor

  • OECD FORD obor

    10404 - Polymer science

Návaznosti výsledku

  • Projekt

  • Návaznosti

    S - Specificky vyzkum na vysokych skolach

Ostatní

  • Rok uplatnění

    2017

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název statě ve sborníku

    Gels in the Conservation of Art

  • ISBN

    978-1-909492-50-9

  • ISSN

  • e-ISSN

    neuvedeno

  • Počet stran výsledku

    3

  • Strana od-do

    277-279

  • Název nakladatele

    Archetype publications

  • Místo vydání

    Londýn

  • Místo konání akce

    Londýn

  • Datum konání akce

    16. 10. 2017

  • Typ akce podle státní příslušnosti

    WRD - Celosvětová akce

  • Kód UT WoS článku