Materials

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Rubber and Polymeric Materials Conference in Slovakia

Automotive Industry in Slovakia

Ten years ago, in May 2005, the first International Conference on polymeric Materials in Automotive was organized in Bratislava. The events reflect the permanent importance of automotive industry as a key economic factor in Slovakia, derived from the presence of dominant investors in Slovakia. more...

May 19. 2015 - Research news

Polyurethanes & Thermoplastics

Effect of Beta Irradiation on Mechanical Properties of Surface Layer of Injection Moulded High Density Polyethylene (HDPE)

The influence of beta radiation on the changes in the structure and selected properties (mechanical and thermal) polymers were proved. The specimens of high density polyethylene (HDPE) were made by injection moulding technology and irradiated by low doses of beta radiation (0, 33, 66, 99, 132, 165 and 198 kGy). more...

May 19. 2015 - Research news

Rubber

Rheological and mechanical Properties of biodegradable polymer Blends based on Polylactic Acid and Polyhydroxybutyrate

The present work is focused on study of rheological and mechanical properties of biodegradable polymer blends based on PLA/PHB combination. Flow curves and processing stability was measured using the oscillation rheometry. Effect of PLA/PHB ratio on processing stability as well as mechanical properties was investigated. more...

May 19. 2015 - Research news

Additives & Fillers

The Influence of Corn Starch on Resistance of Rubber Blends to Fungi

In this project vulcanizates of rubber blends were prepared based on ethylenepropylenediene rubber with content of corn starch as a filler. Starch was used in its native and also thermoplasticform. more...

May 19. 2015 - Research news

Rubber

Effects of low Temperature Atmospheric Plasma on Wett­ability of natural Polymer surfaces and Microorganisms

Utilization of plasma in connection with wood is currently driven by availability of new types of plasma generating low temperature discharge at atmospheric pressure. The aim of this paper is to evaluate capability of atmospheric discharge with runaway electrons (ADRE plasma) in improving wettability of sessile oak wood surface at various regimes of plasma treatment. more...

May 19. 2015 - Research news

Polyurethanes & Thermoplastics

Effect of low Doses Beta Irradiation on Mechanical Properties of Surface Layer of Injection Moulded Polybutylene Terephthalate (PBT)

Using low doses of beta radiation for polybutylene terephthalate (PBT) and its influence on the changes of micromechanical properties of surface layer has not been studied in detail so far. The specimens of PBT were made by injection moulding technology and irradiated by low doses of beta radiation (0, 33, 66 and 99 kGy). more...

May 19. 2015 - Research news

Rubber

Effect of uniaxial Deformation and Relaxation of Rubber/Carbon black Composites on their electrical Properties

Two composites with elastomeric matrices, namely EPDM and SBR, filled with elecroconductive carbon blacks were tested regarding the effect of mechanical deformation of the testing specimen on electrical conductivity of the material. Both decrease as well as increase of electric current was observed during the mechanical deformation or recovery. more...

May 19. 2015 - Research news

Dynamically Vulcanized Blends – Closing Study (Part IV)

Thermoplastic Vulcanizates Based on Polyethylene and Styrene-Butadiene Rubber (Part IV)

Thermoplastic vulcanizates (TPVs) are thermoplastic elastomers (TPEs) prepared by dynamic vulcanization where the rubber component is cured during intensive mixing with thermoplastics. It is suitable to decrease the costs of such materials. more...

May 19. 2015 - Research news

Plast 2015 / Rubber 2015

Meeting Point: Milan in May

After the great results of last edition, Rubber 2015, the satellite trade show dedicated to rubber within Plast 2015, returns at Fiera Milano, in Rho-Pero quarter, from 5 to 9 of May 2015. All important players of the rubber industy will present their innovative technologies and products. More than 50,000 visitors are expected. more...

April 16. 2015 - Tires in

Measuring

Free-Volume Changes in EVA Composites Studied by Positron Annihilation Lifetime Technique

The influence of different concentrations (0 - 60 wt %) of carbon black (HAF) filler on macrostructure and microstructure of ethylene vinyl acetate (EVA) composites was studied through electrical, mechanical measurements and positron annihilation lifetime (PAL) spectroscopy. The electrical conductivity measurements showed an abrupt increase when the concentration of HAF reaches 30 wt%. more...

April 16. 2015 - Research news

Additives & Fillers

Influence of Silica-Polymer Bond Microstructure on Tire-Performance Indicators

Changes in the coupling agent structure in a silica-silane filler system lead to alterations of the microstructure of the silica-polymer interface and determine the dynamic properties, thus wet skid resistance (WSR) and rolling resistance (RR) of a tire tread. more...

April 16. 2015 - Research news

Rubber

Preparation of Super-low Protein Natural Rubber

An attempt was made to remove all proteins from natural rubber in the latex stage by both denaturation of the proteins and removal of lipids, which provided free space between them for fast detachment of the proteins. The removal of proteins was carried out by incubation of natural rubber latex with surfactant, denaturing agent and polar organic solvent, followed by centrifugation. more...

April 16. 2015 - Research news

Rubber

Method for computerized Estimation of Temperature Profiles for Elastomers

In this work a study was carried out about the influence of temperature on the transmission characteristics and lifecycle of an elastomer based on natural rubber. The resulting experimental data were used to develop a thermo-viscoelastic material model, which was then integrated into a new concept for temperature-dependent lifecycle analysis. more...

April 16. 2015 - Research news

Rubber

Removal of Proteins from natural Rubber Latex and Gloves

Removal of proteins from natural rubber was performed by leaching and deproteinization. The leaching was carried out for commercial natural rubber glove, whereas deproteinization was for commercial high ammonia natural rubber latex (HANR) in the presence of urea, sodium dodecyl sulfate (SDS) and acetone. more...

March 13. 2015 - Research news

Materials

Extracted Chitosan as Biosorbent for Co-60 and Cs-137 from Radio­active Waste Simulates

Chitosan, an environmentally friendly biopolymer, has been extracted from local shrimp shell wastes, and has been characterized by Fourier transform infrared spectroscopy (FT-IR) , X-ray diffraction (X-RD), thermal and electron micro-scopic analyses (SEM). The extracted chitosan was used as biosorbent for Co-60 and Cs-137 from their radioactive aqueous waste simulates. more...

March 13. 2015 - Research news

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