Adsorpce/desorpce Saccharomyces Cerevisiae na plazmou deponovaných organokřemičitých tenkých vrstvách

Abstract

Adsorpce barviv na povrchu přírodních a syntetických polymerních vláken nebo tkaných textilií je způsobena účinkem mezimolekulových sil mezi povrchem vlákna a barvivem. Tyto síly jsou poměrně silné. V tomto příspěvku je popsán vliv nízkoteplotní plazmy na povrch polyesteru pro jeho následné barvení.

Adsorption of the dyes on the surface of the natural and synthetic polymer fibers, or weaved fabrics is created due to the effect of the intermolecular forces between fiber surface and the dye. Such forces are causing relatively strong bonding interaction between dye dipoles and the stained matrix. In the case of polymer and biopolymer materials the number of the dipoles is directly proportional to the number of polar groups in macromolecular side chains. The latter number of present dipoles is possible to be increased by several physico-chemical methods, e.g. fire treatment, chemical etching by strong acids, UV irradiation, corona discharge or low-temperature plasma treatments etc. In this communication the effect of low-temperature plasma treatment of polyester (PES) weaved fabric on dye adsorption to the surface of the studied substrate is discussed. Obtained increased dye selectivity to the stained matrix results in improved tinctorial strength, better economical effectiveness as well as to the improved ecology of the process.