VISCOMETRIC STUDIES OF CHITOSAN/POLYACRYLAMIDE MIXTURES
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2014, Vol 0, Issue
Abstract
Polymer-polymer interactions and miscibility for chitosan (Ch) and partially hydrolysed polyacrylamide (HPAM) have been investigated using dilute solution viscosity. The intrinsic viscosity, [η], and the viscosity interaction parameters, bm, have been determined for the binary (solvent/polymer) and ternary (solvent/polymer A/polymer B) systems. Degree of miscibility of these polymer mixtures was estimated on the basis of two criteria. The final result depends on (i) the applied extrapolation method used for determination of the interaction parameters, (ii) the assumed miscibility criteria, and (iii) the blend composition.
Authors and Affiliations
Katarzyna Lewandowska, Alina Sionkowska
PHARMACEUTICAL ASSESSMENT OF GYNAECOLOGICAL POWDERS WITH THE ADDITION OF HYDROPHILISING SUBSTANCES CONTAINING LACTIC ACID COMPLEXED WITH CHITOSAN
Research on gynaecological preparations followed that of optimising their pharmaceutical properties, which is beneficial for gynaecological powders. Gels obtained from powders containing lactic acid complexed with chitos...
STUDIES ON ADSORPTION TIAMFENICOL ON CHITOSANS DEGRADED RADIATION IN PHARMACEUTICAL IN VITRO MODEL
Connections of polymers and biopolymers with biologically active compounds are recently the subject of intensive research. Low molecular weight active ingredient combined with a polymer has, in many cases, the modified a...
INFLUENCE OF THE PHYSICOCHEMICAL FACTORS ON DISSOLUTION OF THE SUBSTANCE OF CLASS II BCS FROM SOLID DISPERSIONS WITH CHITOSAN
The BCS class II includes drugs with low solubility and high permeability. Fenofibrate is an example of this class drugs. The aim of the study was to investigate the effect of chitosan about average molecular weight in v...
PHARMACEUTICAL ASSESSMENT OF GYNAECOLOGICAL POWDERS WITH SODIUM ALGINATE CONTAINING A LACTIC ACID-CHITOSAN COMPLEX
The insufficient duration of the drug’s contact with the vaginal mucosa does not provide adequate pH, conditioning the physiological biocenosis of the organ. This effect is hampered by numerous anatomic and physiological...
ENZYMATIC PREPARATIONS FROM Mucor MOULDS AND THEIR APPLICATION IN OLIGOAMINOSACCHARIDES PRODUCTION
A method of chitosan hydrolysis catalyzed by intracellular chitosanolytic enzymes produced by strains of Mucor circinelloides and Mucor racemosus was developed within the scope of presented study. Hydrolysis of the biopo...