INFLUENCE OF ADDING FUNCTIONALIZED MICROPARTICLES ON THE PHYSICAL-MECHANICAL, STRUCTURAL, AND PROCESSABILITY PROPERTIES OF THERMOPLASTIC RUBBER
Journal Title: Revista de Pielărie Încălţăminte - Year 2019, Vol 19, Issue 1
Abstract
The aim of this paper was to assess the influence of powders, modified on the surface with organic-inorganic compounds, on the block copolymer styrene-butadiene-styrene (SBS) type thermoplastic rubber properties, obtained by the mixing. Powder surface of kaolin, CaCO3, and MgCO3 modification with precursors of TiO2 and SiO2 aimed at improving the interface, dispersion, and physico-mechanical properties, of the composites based on SBS. Titanium isopropoxide was used as a precursor to TiO2, and for SiO2 the tetraethyl orthosilicate (TEOS). Modified powders were morpho-structural characterized by SEM, FTIR, and EDAX. FTIR spectra highlight the bands characteristic of individual powders, but functional groups derived from TiO2 and SiO2 could not be viewed. Due to this issue, it has resorted to an EDAX analysis of all the powders, and the presence of silicon and/or titan elements confirmed that modification occurred. SEM microscopy performed on modified versus the simple powder, shows a reduction of areas containing particle agglomerations, due to the reduction of surface energy and implicitly electrostatic, and attraction forces. The results of the physical-mechanical properties, show that for the composites containing mixture of modified particles (even at high amounts 75%) values of resistance to tear strength, elongation at break, elasticity, were superior to blends containing unmodified particles, to SBS respectively. The results obtained confirm that by modifying the particle surface, improves dispersion, and compatibility between phases, due to achieving optimal interface between particle/polymeric matrix. Melt flow index are lower for the reinforced SBS with high amounts of particles, but without raising issues of processability.
Authors and Affiliations
Maria SÖNMEZ, Laurenţia ALEXANDRESCU, Mihai GEORGESCU, Dana GURĂU, Ciprian CHELARU, Mircea JUGĂNARU, Anton FICAI, Roxana TRUŞCĂ
Keywords
Related Articles
- EP ID EP538320
- DOI 10.24264/lfj.19.1.4
- Views 96
- Downloads 0
ELECTROCHEMICAL BEHAVIOR OF TANNIN SOLUTIONS UNDER MICROWAVE IRRADIATION
Vegetable tannin extract has an important use as a tanning agent in leather industry. The electrochemical behavior of tannin solutions, as a critical factor, greatly affect vegetable tanning. In this work, we have invest...
THE ELECTRIC ACTIVE STARCH FLOCCULATION OF PROTEIN AND ITS DEGRADATION PRODUCTS IN LEATHER EFFLUENTS
There is a large amount of protein or its degradation products in leather effluents, which are difficult to deal with, such as NH3-N and SS (suspended solids), etc., so it is significant to remove all the protein residue...
IMPACT OF SPORT DANCING ON THE DYNAMICS CHARACTERISTIC OF FOOT MOVEMENT OF COLLEGE STUDENTS
With the merits of improving physical quality, body shaping and physical aesthetics, sport dancing is more and more popular among college students. The gestural movement of sport dancing is mainly realized through the re...
SAFETY ASSESSMENT OF SHOES FIT FOR DRIVING
This study was aimed to explore a suitable heel height of shoes for driving. Fourteen healthy female students were recruited and five pairs of footwear with varied heel heights were randomly arranged to each participant;...
INVESTIGATION OF EXTRACELLULAR PROTEASE ACTIVITY OF TWO DIFFERENT EXTREMELY HALOPHILIC ARCHAEA ISOLATED FROM RAW HIDE
In this study, it was aimed to investigate extracellular protease activity of two different extremely halophilic archaea and to identify them by using phenotypic and molecular methods. The haloarchaea were isolated from...