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Titolo:
The mutual effect of absorption of biologically active substances and microstructure of native cellulose matrix on the properties of resulting compounds
Autore:
Kotelnikova, NE; Panarin, EF; Serimaa, R; Paakkari, T; Wegener, G; Windeisen, E;
Indirizzi:
Russian Acad Sci, Inst Mol Cpds, St Petersburg 199004, Russia Russian AcadSci St Petersburg Russia 199004 t Petersburg 199004, Russia Univ Helsinki, Dept Phys, SF-00014 Helsinki, Finland Univ Helsinki Helsinki Finland SF-00014 Phys, SF-00014 Helsinki, Finland Univ Munich, Wood Res Inst, D-80797 Munich, Germany Univ Munich Munich Germany D-80797 ood Res Inst, D-80797 Munich, Germany
Titolo Testata:
MACROMOLECULAR SYMPOSIA
, volume: 138, anno: 1999,
pagine: 181 - 189
SICI:
1022-1360(199903)138:<181:TMEOAO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
5
Recensione:
Indirizzi per estratti:
Indirizzo: Kotelnikova, NE Russian Acad Sci, Inst Mol Cpds, St Petersburg 199004, Russia Russian Acad Sci St Petersburg Russia 199004 004, Russia
Citazione:
N.E. Kotelnikova et al., "The mutual effect of absorption of biologically active substances and microstructure of native cellulose matrix on the properties of resulting compounds", MACRO SYMP, 138, 1999, pp. 181-189

Abstract

In order to obtain multicomponent polymer systems exhibiting biological activity microcrystalline cellulose was used as a matrix for biologically active compounds, such as dimethylbenzylalkylammonium chloride, poly-N-vinylpyrrolidone, copolymer of N-vinylpyrrolidone and crotonic acid, and complex of dimethylbenzylalkylammonium chloride with copolymer of N-vinylpyrrolidoneand crotonic acid. Adsorption interaction of microcrystalline cellulose with these was studied under various conditions. Adsorption isotherms of compounds of polymer nature are of similar character and are described by the Freundlich equation. The isotherms of dimethylbenzylalkylammonium chloride are described by the Langmuir equation. Characteristics of the resulting compounds were obtained using XPS and IR Fourier spectroscopy, WAXS, and SEM. Chemical interaction between microcrystalline cellulose and dimethylbenzylalkylammonium chloride takes place. This interaction leads to a new labile morphological cellulose structure accessible to penetration, which is confirmed at a morphological level by SEM.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/11/20 alle ore 10:11:12