Effect of Direct-Current Discharge Treatment on the Surface Properties of Chitosan-Poly(L,L-Lactide)-Gelatin Composite Films

[摘要]：The surface of films made from a chitosan-poly(L,L-lactide)-gelatin mixture stabilized with a grafted-copolymer fraction has been modified by dc discharge treatment, as well as that of films made of the individual components. The surface properties of the films (wettability, surface energy), the chemical structure of surface layers, and their morphology have been examined by goniometric measurement of contact angles, X-ray photoelectron spectroscopy, and scanning electron microscopy.

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