Vol. 325 No. 3 (2014): Химия и химические технологии

Properties of polymer composites on the basis polyvinyl alcohol

The urgency of the discussed issue is caused by the increase interest of obtaining and using the polymer compositions with nanoparticles of silver and gold, possessing a number of specific properties for biomedicine researches like a material for tissues and cell engine ering, medicine substance with controlled secrete of drugs, in electronic and other fields of engineering. The paper demonstrates the possibility to get polymer composites based on polyvinyl alcohol with Na-carboxymethyl cellulose and natrium tetraborate and fillers in the form of sols of silver and gold nanoparticles. The main aim of the study is to obtain polymer compositions based on water solutions of polyvinyl alcohol and Na-carboxymethyl cellulose adding natrium tetraborate and fillers in the form of sols silver and gold nanoparticles; to study their rheological and surface properties: dynamic viscosity, module elasticity and adhesion strength. The methods used in the study: viscosimetric study of polymer composites was carried out on rheoviscosimeter Rheotest-2; elasticity module was defined by the method of spherical indenter penetration; adhesion strength was studied by the method of metal ring perpendicular separation from polymer body surface. The author has determined the quantity of hydrogen bonds in polymer composites by Infra-Red spectral method on spectrometer Nicolet 5700. The results: It was shown for the first time that while forming polymer complex the dynamic viscosity and elasticity module increase and adhesion strength decreases in comparison with the initial polymers due to interdependent influence of the components in the mixture of polyvinyl alcohol, Na-carboxymethyl cellulose, natrium tetraborate and sols of silver and gold nanoparticles. The author carried out the comparative estimation of the properties of the polymer composites. The interaction of the polymer composition results in change of chemical composition and structure of polymers in comparison with the initial ones; their mixtures are water-insoluble. It is possible to use this composition with silver nanoparticles in the form of polymer pigs for antibacterial cleaning of inside surface of pipelines for different purposes. The polymer compositions with silver and gold nanoparticles can find application in medicine in the form of films for dressing and medical materials.

Keywords:

composition, nanoparticles, dynamic viscosity, module of elasticity, adhesion

Authors:

Ludmila Trufakina