SURFACE PROPERTIES OF CHITOSAN COMPOSITES WITH POLY(VINYL ALCOHOL) AND HYDROXYAPATITE

• Authors: Katarzyna Lewandowska
• Languages of publication: EN

Abstracts

EN

Surface properties of composites containing chitosan (Ch), poly(vinyl alcohol) (PVA) with hydroxyapatite (HAP) were investigated by contact angle measurements and atomic force microscopy (AFM). Thin films of Ch/HAP and Ch/PVA/HAP composites have been formed by casting methods from acetic acid solutions. Measurements of the contact angle for diiodomethane (D), and glycerol (G) on the surface of chitosan films, Ch/HAP and chitosan/PVA/HAP films were made and surface free energy was calculated. It was found that chitosan/HAP or Ch/PVA/HAP blend surface is enriched in high surface energy component i.e. chitosan. The study of composites by AFM showed a completely different morphology when compared with unmodified components. The roughness of composites increase after the addition of hydroxyapatite. This may indicates a strong interaction between the polymeric components and inorganic additive.

Keywords

EN

AFM; chitosan; composites; hydroxyapatite; poly(vinyl alcohol); surface properties

• Publisher: Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
• Journal: Progress on Chemistry and Application of Chitin and its Derivatives
• Year: 2015
• Volume: 20
• Pages: 177-182

Contributors

author

Katarzyna Lewandowska

• Faculty of Chemistry, Nicolaus Copernicus University in Torun , ul. Gagarina 7, 87-100 Toruń Poland

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• Document Type: article