Controlled loading and release of methylene blue in layer-by-layer assembled polyelectrolyte films

The layer-by-layer (LbL) assembled multilayer films are widely used in the biomedical field for the controlled drug delivery. Here, multilayer films were assembled by LbL technique through alternating deposition of poly(diallyldimethylammonium chloride) (PDDA) and poly(acrylic acid) (PAA) on glass slides. Methylene blue (MB) was used as a model drug to investigate the loading and release ability of the multilayer films. The result showed that...