pH- and thermoresponsive properties of hybrid systems based on gelatin and organomodified SiO2 obtained by the sol-gel method
DOI:
https://doi.org/10.15407/dopovidi2016.11.070Keywords:
biocomposite, gelatin, hybrid structure, lyophilic properties, polysiloxane, sensors, silverAbstract
We have studied the pH- and thermoresponsive characteristics of the composites based on biopolymer gelatin and 3-gly cidyloxypropyltrimethoxysilane obtained by the sol-gel method. Sorption capacity of the systems reaches 2700 % at pH 12, whereas at pH 2—9 this parameter is at most 50—90 % depending on the composition. pH-sensitivity of the composites could be controlled by the transformation of the matrix into a basic form and introducing the silver nanoparticles into the structure . Thermoresponsive activity of the hybrid composites is suppressed by their structurization under the action of hydrogen and hydrophobic interactions of different strengths and crosslinks of different nature.
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