In this article, blend films were prepared by blending 2 wt% chitosan acetate solution with 2 wt% polyacrylamide (PAAm) aqueous solution. The structure and physical properties of the resulting blend films were analysized by FT-infrared spectra (FT-IR), wide angle X-ray diffraction (WAXD), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), and by tensile tester. The results showed the occurrence of intermolecular interactions between chitosan and polyacrylamide through hydrogen bond formation. The thermal stability, and mechanical properties were improved by blending chitosan with polyacrylamide. It was worth noting that the blend film exhibited the greatest tensile strength 68 MPa and highest thermal stability when the polyacrylamide content in the blends was around 20 wt%. The results from SEM were consistent with the results above. Meanwhile, the water absorbability of the blend films was also discussed.
|Original language||English (US)|
|Number of pages||11|
|Journal||Journal of Macromolecular Science - Pure and Applied Chemistry|
|State||Published - Aug 21 2001|
- Blend films
- Hydrogen bonds