The mutual effect of absorption of biologically active substances and microstructure of native cellulose matrix on the properties of resulting compounds

In order to obtain multicomponent polymer systems exhibiting biological act ivity microcrystalline cellulose was used as a matrix for biologically acti ve compounds, such as dimethylbenzylalkylammonium chloride, poly-N-vinylpyr rolidone, copolymer of N-vinylpyrrolidone and crotonic acid, and complex of dimethylbenzylalkylammonium chloride with copolymer of N-vinylpyrrolidone and crotonic acid. Adsorption interaction of microcrystalline cellulose wit h these was studied under various conditions. Adsorption isotherms of compo unds of polymer nature are of similar character and are described by the Fr eundlich equation. The isotherms of dimethylbenzylalkylammonium chloride ar e described by the Langmuir equation. Characteristics of the resulting comp ounds were obtained using XPS and IR Fourier spectroscopy, WAXS, and SEM. C hemical interaction between microcrystalline cellulose and dimethylbenzylal kylammonium chloride takes place. This interaction leads to a new labile mo rphological cellulose structure accessible to penetration, which is confirm ed at a morphological level by SEM.