Essays about: "Viscometry"

Found 3 essays containing the word Viscometry.

  1. 1. Formulation development, rheological characterization, and cosmetic evaluation of gel-creams

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Carl Pontén; [2024]
    Keywords : Rheology; Texture analysis; Viscometry; Semisolids; Design of Experiments; Critical Process Parameters; Critical Quality Atttibutes; Pharmaceutical Technology; Technology and Engineering;

    Abstract : Oil in water (o/w) emulsions are thermodynamically unstable systems composed of small oil droplets dispersed in a continuous aqueous phase. This means that given enough time, the two phases will separate. Pharmaceutical emulsions are used as a method of administering the Active Pharmaceutical Ingredient (API) for topical applications. READ MORE

  3. 2. The discolouration of Hyaluronan in presence of phosphate buffer

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Alma Fjällström; Emmy Draxler; Saida Adan; Sandra Andersson; Louise Aidanpää; [2018]
    Keywords : Hyaluronan; degradation; Molecular weight; yellow; discolouration;

    Abstract : Hyaluronan is a polymer that among other things is used in fillers. Products containing Hyaluronan is sometimes discoloured over time and the mechanism behind this discolouration is still unknown. However, it was suspected that discolouration occurs during the degradation due to high pH values or with a phosphate buffer. READ MORE

  4. 3. Mapping the intrinsic viscosityof hyaluronic acid at high concentrations of OH-

    University essay from Uppsala universitet/Institutionen för teknikvetenskaper

    Author : Victor Spelling; Mathias Axelsson; Lovisa Ringström; Johanna Munck af Rosenschöld; Anton Lindblad; [2017]
    Keywords : Alkaline solution; Degradation; Extrapolation; Hyaluronic acid; Intrinsic viscocity; Macromolecules; Polymer; Regression; Sodium hydroxide; Ubbelohde capillary viscometry;

    Abstract : Hyaluronic acid is commonly used in dermatological fillers in the form of gels. It is established how these gels' firmness is affected by the amount of cross linker and hyaluronic acid respectively. However, the effect of hydroxide ions in solution is rather unknown. READ MORE