Natural rubber

Kohjiya_

Review

Crystallization of Natural Rubber: Its unique Feature

Crystallization of natural rubber (NR) has been uniquely complicated. This review is to disentangle the complications. Low-temperature crystallization (LTC) is a difficulty when using NR during winter in the early 19th century, overcome by vulcanization. In 1925, strain-induced crystallization (SIC) was firstly reported, but it has remained obscure for long till the advent of time-resolved […] more...

October 9. 2017 - Research news

seiichi-kawahara_

NMR Spectroscopy of Latex

Mechanism of heterogeneous Hydrogenation of natural Rubber in Latex

Heterogeneous hydrogenation of natural rubber (NR) present in disper-soids in latex is studied by latex-state 13C-NMR spectroscopy in order to elucidate its mechanism. The hydrogenation is carried out with palladium catalyst under hydrogen gas atmosphere at 297 to 353 K for various reaction times. The conversion of hydrogenation is found to be dependent upon reaction […] more...

October 12. 2016 - Research news

florence-bruno_unbenannt

Mastikationsexperimente and Naturkautschuk

Behavior of masticated natural Rubber highlighted by LAOS Rheology

Mastication experiments were performed on natural rubber in an intermeshing mixer by varying the process parameters. The control of rubber temperature during mixing emerged as the key factor of the process. Two different fill factors and several processes were used to reduce viscosity. LAOS measurements with Fourier Transform allowed to study and distinguish the final […] more...

October 6. 2016 - Research news

Sa_Ad riyajan_

Biopolymer-Rubber-Blends

A Novel Approach to Blending Cassava Starch with a maleated epoxidized Natural Rubber Latex

The objective of this study was to prepare blends of maleated epoxidized natural rubber (MENR) incorporating latex and cassava starch solution (St) without using a cross-linker.  The chemical structure of the MENR was confirmed by FTIR. Increasing the proportion of St in the blend caused the swelling ratio of the sample to decrease due to […] more...

August 5. 2016 - Research news

Unbenannt

Silane-based Additives

Reinforcement Efficiency of Silica in Dependence of different Types of Silane Coupling Agents in Natural Rubber-based Tire Compounds

The effects of 3-Octanoylthio-1-propyltriethoxysilane (NXT), 3-mercaptopropyl-di(tridecan-1-oxy-13-penta (ethylen-eoxide)) ethoxysilane (VP Si-363) and vinyltriethoxysilane (VTES) on the properties of silicafilled NR compounds are studied in comparison with bis-(trieth-oxysilylpropyl) tetrasulfide (TESPT). more...

May 4. 2016 - Research news

The Influence of Thermal Ageing of Natural RubberStyrene Butadiene Rubber Vulcanizates on Steady state and Dynamic Wear Behaviour

Ageing of Rubber

The Influence of Thermal Ageing of Natural Rubber/Styrene Butadiene Rubber Vulcanizates on Steady state and Dynamic Wear Behaviour

The aim of this work is to explore the influence of thermal ageing on wear resistance of cured rubber which has been based on varied composition of Natural rubber/Styrene butadiene rubber compounds. more...

April 4. 2016 - Research news

Sa-Ad Riyajan_Unbenannt

Preparation and Properties

Novel modified Natural Rubber with Chitosan Nanofibers

The aim of this work was to prepare and characterize the nanofiber obtained from epoxidized natural rubber-g-chitosan (ENR-g-CTS)/poly(vinyl alcohol) (PVA) blends. The preparation of ENR-g-CTS/PVA blend nanofibers was carried out using the electrospinning technique. The morphology of the ENR-g-CTS/PVA blend nanofiber was confirmed by SEM, TEM and AFM. more...

December 16. 2015 - Research news

Edison Agrosciences is to develop a sunflower rubber crop that will serve to diversify global rubber production and provide the U.S. with an alternative source for this strategically important commodity. (Source: Uwe H. Friese, Germany)

News

Edison Agrosciences to develop alternative rubber crops from sunflower

Agricultural technology accelerator Ag Techinventures (AgTI), Durham, USA, has licensed a Purdue University innovation that could increase natural rubber production and expand production to new geographies. AgTI's first startup, Edison Agrosciences in Chapel Hill is the company developing this technology. more...

November 30. 2015 - News

News

Bridgestone reveals first passenger tires made from guayule

Japanese Bridgestone Corporation announced that it built passenger tires with 100 percent of its natural rubber-containing components derived from guayule, a desert shrub that grows in arid regions. By future research the company will evaluate applications in a wider range of tire types and rubber compounds. more...

October 6. 2015 - News

Engine mount made from dandelion rubber. The demands on engine mounts are completely different to those on tires.(Source: Contitech)

News

Contitech is testing engine mounts made from dandelion rubber

At the International Motor Show IAA in Frankfurt, Contitech presents promising research results for mounting elements based on the so-called „Taraxagum“, a natural rubber extracted from dandelions. more...

September 24. 2015 - News

News

ARBC concerned about protracted low rubber prices

The Asean Rubber Business Council (ARBC), which is accounting for around 76.2% of the world's total natural rubber production, is very concerned over the current protracted low rubber prices. Published by the International Rubber Council Ltd. (IRCo) a few days ago, ARBC discussed this topic at length on it’s meeting in Bali on 29 August 2015. more...

September 21. 2015 - News

Oils for Rubber Compounds

Petroleum-based Safe Process Oils in NR and NR/SBR Blends: Part III. Effects of Oil Types and Contents on the Properties of Carbon Black Filled Compounds

Part III. Effects of Oil Types and Contents on the Properties of Carbon Black Filled Compounds The influences of DAE-, TDAE- and MES-oils on the properties of carbon black filled NR and NR/SBR blend compounds are discussed. The properties are strongly affected by oil contents, but less by the oil types. Compounds with DAE have the lowest Mooney viscosity but highest complex viscosity and Payne effect. SEM micrographs show that carbon black is finely dispersed in the compounds, except for MES which shows slightly poorer filler dispersion than TDAE and DAE. The use of TDAE and MES in NR clearly influences the properties related to changes in Tg and viscoelastic behavior. Use of MES gives the best elastic response in NR, while TDAE gives the best response for NR/SBR blend vulcanizates. more...

September 16. 2015 - Research news

Additives & Fillers

Preparation and Physical Properties of Green Rubber Composite from Natural Rubber and Coconut Meal Waste

To date, the biopolymer is attractively used to blending with natural rubber (NR) to enhance its mechanical properties and biodegradable ability. Therefore, the objective of this work is to study the preparation of biopolymer composite from NR and coconut meal waste (CF filler) by using maleic anhydride (MA) as a crosslinking agent. more...

June 19. 2015 - Research news

Rubber

Dispersion Enhancement of Petroleum-based Sulfur in Natural Rubber by the Use of TDAE oil Coating Technique

The article demonstrates that the sulfur classified as a by-product from petroleum refining process (PS) is capable of being used as a curing agent. Poor dispersion of the PS is still of high concern and, thus, attempts have been made to use a common rubber plasticizer, namely treated distillate aromatic extract (TDAE) oil, as a dispersing agent. more...

March 13. 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

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