Identifying the optimum method for modifying the zinc oxide surface in order to obtain a high deposit degree of the functioning agent
Journal Title: Proceedings of the International Conference on Advanced Materials and Systems (ICAMS) - Year 2018, Vol 1, Issue
Abstract
The aim of this study is to identify the optimal method of surface modification of ZnO nanoparticles in order to obtain a high deposition rate of the polydimethylsiloxane (PDMS) functionalizing agent. Thus, in order to identify the optimal route, the surface of ZnO nanoparticles were functionalized by 3 methods, ultrasonic, magnetic stirring and vacuum adsorption, followed by advanced powder characterization, FTIR, SEM, EDS, DSC-TG. The FTIR analysis recorded on the surface modified ZnO powder highlights the functional groups in the PDMS, regardless of the synthesis method, which confirms that the functionalization took place. However, based on the intensity of PDMS functional groups, it can be concluded that the highest deposition rate is obtained in the case of ultrasonography, followed by the magnetic stirring and vacuum adsorption method. This different deposition rate can be attributed to the fact that ultrasonication leads to ZnO particles being broken down into smaller particles, resulting in a higher contact surface with PDMS. The SEM image obtained on the commercial ZnO powder and the ZnO / PDMS powder, highlights their extremely varied morphology and demonstrates that the modification does not influence either the shape or size of the ZnO. EDS analysis confirms that functionalization took place due to the presence of the Si element alongside the other Zn and O major elements. The DSC-TG analysis obtained on the ZnO / PDMS powder indicated an organic mass loss, from the organosilane structure, of 5.51% in the range of 365-530°C. The results obtained provide the premise that these functionalized ZnO nanoparticles in addition to antibacterial properties will improve compatibility / dispersibility in various polymeric matrices.
Authors and Affiliations
Maria SÖNMEZ, Denisa Ficai, Anton FICAI, Ovidiu OPREA, Ioana Lavinia Ardelean, Roxana TRUŞCĂ, Laurenţia ALEXANDRESCU, Mihaela NIŢUICĂ, Daniela STELESCU, Mihai GEORGESCU, Dana GURĂU
Keywords
Related Articles
- EP ID EP602531
- DOI 10.24264/icams-2018.I.23
- Views 157
- Downloads 0
Study on the functionalized graphene modified waterborne polyurethane materials
A new type of waterborne polyurethane (WPG) is fabricated using the functionalized graphene. The mechanical properties, wear resistance, and heat aging resistance of the modified polyurethane materials were tested. The r...
Biodegradability of hair as a waste of leather industry
Leather industry is one of the sources, which releases keratin-containing wastes. Still now, most of the tanneries are following hair-burning process, which contribute high amount of COD, BOD, TDS etc., to the effluent....
Self-cleaning properties of cotton gauzes impregnated with calcium alginate/TiO2-Ag/reduced graphene oxide composite
Nano-modified fabrics using photocatalytic materials have a vast potential for the development of new products from self-cleaning fabrics for consumer to filter membranes for separation field and/or photocatalytic degrad...
Studies on structural, surface morphological, optical, luminescence and UV photodetection properties of sol gel oxides thin films
ZnO and ZnCoO thin films have been deposited onto glass substrates by sol–gel spin coating method. Zinc acetate dihydrate, cobalt acetate tetrahydrate, Isopropanol and monoethanolamine (MEA) were used as a precursor, dop...
Phenotypic characterization and antibiotic susceptibilities of Ewingella americana and Kluyvera intermedia isolated from soaked hides and skins
Soaked hides and skins may contain different species of family Enterobacteriaceae, originating from animal’s feces, soil, and water. Some species of this family may be pathogenic to humans and animals. Hence, phenotypic...