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    Wyświetlanie 1-3 z 3
    Tytuł:
    Influence of the intermolecular interaction on physico-chemical properties of chitosan/hyaluronic acid blends
    Autorzy:
    Lewandowska, Katarzyna
    Sionkowska, Alina
    Grabska, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/1034820.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
    Tematy:
    AFM microscopy
    chitosan
    hyaluronic acid
    polymer blends
    viscosity interaction parameters
    Opis:
    In the present study, the results of viscosity measurements in dilute solutions of chitosan (Ch) with hyaluronic acid (HA) are presented. Chitosan is blended with hyaluronic acid in aqueous 0.1M CH3COOH/0.2M NaCl and 0.3M NaCl respectively, or with the addition of HEPES. Viscosity measurements of dilute polymer solution were carried out in an Ubbelohde capillary viscometer. The intrinsic viscosity, [], and the viscosity interaction parameters, bm, have been determined for the binary (solvent/polymer) and ternary (solvent/polymer A/polymer B) systems. The homogeneity and morphology of chitosan blends were ascertained from the tapping-mode atomic force microscopy. The surface roughness of chitosan, hyaluronic acid and Ch/HA blended films was altered by mixing. The obtained results suggested that there was existence of the strong interactions between chitosan and hyaluronic acid.
    Źródło:
    Progress on Chemistry and Application of Chitin and its Derivatives; 2015, 20; 170-176
    1896-5644
    Pojawia się w:
    Progress on Chemistry and Application of Chitin and its Derivatives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of the type solvent on the structure of chitosan blends with hyaluronic acid
    Autorzy:
    Lewandowska, Katarzyna
    Sionkowska, Alina
    Grabska, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/1034698.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
    Tematy:
    chitosan
    hyaluronic acid
    microscopy.
    polymer blends
    surface properties
    Opis:
    The influence of the type solvent on the structure of chitosan, hyaluronic acid and their blend films was investigated. Aqueous acetic acid, hydrochloric acid, sodium chloride and aqueous acetic acid/NaCl were used as solvents for chitosan, hyaluronic acid and Ch/HA solution blends. Ch, HA and their blend films were prepared by casting technique. The homogeneity and morphology of chitosan blends were ascertained from the tapping-mode atomic force microscopy (AFM) and scanning electron microscopy (SEM). The changes of topography images are considered by determining the root mean square (RMS, Rq) deviation in the image data. The surface roughness of chitosan, hyaluronic acid and Ch/HA blended films was altered by mixing. The structure of chitosan blends with hyaluronic acid depends on the blend composition and on the solvent used for preparing the blend.
    Źródło:
    Progress on Chemistry and Application of Chitin and its Derivatives; 2016, 21; 147-153
    1896-5644
    Pojawia się w:
    Progress on Chemistry and Application of Chitin and its Derivatives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterisation of chitosan/hyaluronic acid blend films modified by collagen
    Autorzy:
    Lewandowska, Katarzyna
    Sionkowska, Alina
    Grabska, Sylwia
    Michalska, Marta
    Powiązania:
    https://bibliotekanauki.pl/articles/1034575.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
    Tematy:
    chitosan
    collagen
    hyaluronic acid
    polymer blends
    surface properties
    Opis:
    In the present study, thin films based on the blends of chitosan (Ch) and hyaluronic acid (HA) with and without collagen (Coll) were characterised using tensile tests, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and thermogravimetric analysis (TGA). Ch/HA and Ch/HA/Coll polymer blends were prepared using the solvent evaporation technique. The interactions between polymer components in the binary and ternary blends were studied by FTIR analysis. Mechanical properties were studied and compared with those of simple polymer films. These results show that the addition of collagen into Ch/HA blends led to the increase of tensile strength and Young modulus. Moreover, it was found that the thermal stability of the Ch/HA binary blend significantly increased upon the addition of collagen.
    Źródło:
    Progress on Chemistry and Application of Chitin and its Derivatives; 2017, 22; 125-134
    1896-5644
    Pojawia się w:
    Progress on Chemistry and Application of Chitin and its Derivatives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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