Poly-L-Iysine/carboxymethylcellulose multilayers on corona treated polypropylene substrates

• Published in: Journal of Optoelectronics and Advanced Materials Vol. 11; no. 10; pp. 1424 - 1427
• Main Authors: Marudova, M, Yovcheva, T, Todorov, R, Zsivanovits, G, Vozary, E, Viraneva, A, Vlaeva, I, Gencheva, E, Mekishev, G
• Format: Journal Article
• Language: English
• Published: 01.10.2009
• ISSN: 1454-4164

Poly-L-lysine/carboxymethylcellulose multilayers were formed by a self-assembly deposition technique on negative corona charged polypropylene (PP) films by consecutive dipping of these PP films in acidic solutions of poly-L-lysine (PLL) and carboxymethylcellulose (CMC). The binding of the biopolymers was irreversible over the time of the deposition. The films were examined by spectroscopic (FTIR, NIR and UV-VIS), electrical, optical and rheological methods. The transmittance spectra of the films with multilayers indicated the presence of PLL and CMC. The intensity of the typical bands was found to increase as the number of the deposited layers grew. The adhered multilayers changed the electrical impedance of the PP films. The multilayers were stable in distilled water and their equilibrium degree of swelling increased with the increase of the number of adhered layers. The tensile modulus of the coated films in the dry and hydrated states was found to increase with the increase of the number of adhered layers.