EFFECT OF A HYDROPHILISING SUBSTANCE ON THE VISCOSITY OF GYNAECOLOGICAL GELS CONTAINING LACTIC ACID COMPLEXED WITH CHITOSAN
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2012, Vol 0, Issue
Abstract
Thus ensuring a continuous action of a drug also during daily activity time of a patient is a vital question in gynaecological treatment. The main problem in applied therapies is to maintain the continuity of treatment during 24 hours. The addition of 5-25% glycerol or 1,2-propylene glycol decreases the pH of investigated gels with calcium alginate to 4.20 to 4.88 (1:1) and 3.69 to 4.19 (2:1); 4.29 to 4.88 (1:1) and 3.62 to 4.40 (2:1). The addition of 5-25% glycerol or 1,2-propylene glycol increases the dynamic viscosity gels with calcium alginate from 595.14 to 820.25 for 1:1 and 640.15 to 769.12 for 2:1; 585.40 to 815.56 for 1:1 and 648.52 to 780.10 for 2:1 ratios. Rheological investigations revealed an increase in the dynamic viscosity of preparations containing poloxamer 407 with the addition of calcium alginate and glycerol or 1,2-propylene glycol in comparison to the reference gels.
Authors and Affiliations
Katarzyna Małolepsza-Jarmołowska
VISCOMETRIC STUDIES OF CHITOSAN/POLYACRYLAMIDE MIXTURES
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 intera...
PREPARATION OF MICRO AND NANOSTRUCTURES OF CHITOSAN BY ULTRASONIC COALESCENCE OF W/O EMULSIONS
In the paper, the preeliminary study of chitosan micro and nanospheres precipitation due to two reverse emulsions (W/O) coalescence is described. The composition conditions, which must be filled to obtain stable reverse...
PHARMACEUTICAL ASSESSMENT OF THERMOSENSITIVE HYDROPHILIC GELS WITH POLYVINYL PYRROLIDONE K-30 CONTAINING LACTIC ACID COMPLEXED WITH CHITOSAN
Gels containing lactic acid complexed with chitosan at a stoichiometric ration 1:1 and 2:1 and 5 - 25% content of polyoxyethylene glycol 200 are able to move from 25 to 30 cm. Measurements performed in a biopharmaceutica...
ELECTROLYTIC METHOD FOR OBTAINING POROUS CHITOSAN STRUCTURES WITH HYDROXYAPATITE
The aim of this study was to develop a preparation method of porous chitosan structures, in the electrolysis of the chitosan solution in acetic acid. Chitosan in aqueous acetic acid is a polyelectrolyte. During the const...
HYDROXYAPATITE - CHITOSAN BIOCOMPOSITES
Both samples of HAp form with chitosan and it’s useful forms (MKCh, chitosan lactate) well shaped 3-dimentional forms – sponges. The sponges can be used as implants in orthopedic surgery. 3-dimentional structures of HAp...