PHYSICOCHEMICAL CHARACTERISTICS OF CHITIN-POLYESTER SYSTEMS IN DEPENDENCE ON THEIR COMPOSITION
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2011, Vol 0, Issue
Abstract
In order to improve the properties of their individual components, the compositions of dibutyrylchitin (DBC) and aliphatic polyesters (PCLG) were prepared and examined. The studied systems are homogeneous in a wide range of composition and molar masses of their components. The homogeneities of the blends made it possible to form smooth and transparent films, which were investigated by mechanical testing. It was found that the chemical structure and molar mass of a polyester component had an effect on mechanical properties of the systems. The films were subjected to hydrolytic degradation in media of various pH values (4.0, 7.4 and 13.0) at 37 °C. Furthermore, it was found that the molar mass and composition of the PCLG component clearly affected the rate of hydrolysis of the studied systems. The effect of hydrophilicity of the DBC/PCLG blends on degradation rate was also investigated. Consequently, by an appropriate choice of the components it is possible to control the profile of hydrolytic degradation of the DBC/PCLG systems.
Authors and Affiliations
Paweł P Sobecki, Barbara Pabin-Szafko, Joanna Szumilewicz
Keywords
Related Articles
- EP ID EP73630
- DOI -
- Views 98
- Downloads 0
CYTOTOXICITY OF CHITOSAN BASED THERMO-SENSITIVE HYDROGELS INTENDED FOR NERVOUS TISSUE ENGINEERING
The damage to the central nervous system is one of the most difficult cases of trauma to treat. Over the last few years, increasing attention has been focused on the development of strategies based on biomaterials for re...
EFFECT OF CHITOSAN ON THE RHEOLOGICAL PROPERTIES OF HYDROGELS BASED ON SODIUM CARBOXYMETHYLCELLULOSE
The aim of the study was to evaluate the effect of changing the concentrations of chitosan on the rheological properties of the obtained formulation. Hydrogels were prepared with 1% hydrocortisone containing 4% sodium ca...
CYCLICAL METAL ADSORPTION AND DESORPTION THROUGH SLUDGE IMMOBILIZED IN CHITOSAN MEDIA
In this research, a cyclical adsorption/desorption of cadmium and zinc from solutions containing a single metal or its mixture in ratio of 1:1 and 1:2 using immobilized activated sludge in the chitosan (ASC) was examined...
SYNTHESIS AND POTENTIAL CYTOTOXICITY EVALUATION OF CARBOXYMETHYL CHITOSAN HYDROGELS
The aim of the research was to employ radiation to produce flexible carboxymethyl chitosan (CMCS) based hydrogels of uniform structure to characterise their swelling properties and cytocompatibility for potential applica...
DETERMINATION OF THE HYDROLYTIC ACTIVITY OF WHOLE SALIVA USING CHITOSAN ASCORBATE AS A SUBSTRATE
The aim of this work was to evaluate of hydrolytic activity of whole saliva using chitosan ascorbate as a substrate. In this aim, the concentrations of N-acetyl-D-glucosamine were determined in saliva before addition of...