chemical recycling of sulfur-cured natural rubber using
Chemical recycling of sulfur-cured natural rubber using
Sulfur-cured unfilled natural rubber (NR) was devulcanized in supercritical CO 2 (scCO 2) by using diphenyl disulfide (DD) as a devulcanizing reagent. The product was fractionated into sol and gel components.
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Mechano-chemical recycling of sulfur cured natural rubber
Mechano-chemical recycling of sulfur cured natural rubber Summary — The disposal of cured rubber has become a major environmental problem. Discarded rubber was devulcanized by an open two-roll cracker-cum mixing mill both in the presence or absence of diphenyl disulfide at 120 oC (Mechano-Chemical Process, MCP), and then the obtained devulcan-
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Chemical recycling of sulfur-cured natural rubber using
Sulfur-cured unfilled natural rubber (NR) was devulcanized in supercritical CO2 (scCO2) by using diphenyl disulfide (DD) as a devulcanizing reagent. The product was fractionated into sol and gel ...
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Recycling of sulfur cross-linked natural rubber (NR) using
This chapter reviews an efficient recycling process using supercritical carbon dioxide (scCO2) for sulfur cross-linked natural rubber (NR). The role of scCO2 in the devulcanization process is also described; scCO2 works very well in facilitating the penetration of the most effective devulcanizing reagent, diphenyl disulfide, into NR vulcanizate.
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Polymer Degradation and Stability
Natural rubber Chemical devulcanization Crosslink density Mechanical properties abstract Chemical devulcanization of sulfur cured natural rubber (NR) was investigated using benzoyl peroxide (BPO) as a devulcanizing agent. The influence of important reclaiming parameters such as reaction time,
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EP3088455A1 - Composition for devulcanization of sulfur
This invention relates to a composition for devulcanization of sulfur-cured rubber and a method of devulcanization of sulfur-cured rubber, and can be used to recycle used rubber articles. The composition for devulcanization of sulfur-cured rubber, which contains a devulcanizing agent for the selective destruction of sulfide bonds according to this invention, has a mixture of triphenylphosphine ...
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Influence of process variables on chemical devulcanization
Chemical devulcanization of sulfur cured natural rubber (NR) was investigated using benzoyl peroxide (BPO) as a devulcanizing agent. The influence of important reclaiming parameters such as reaction time, reaction temperature and concentration of the devulcanizing agent on the devulcanization process and mechanical properties of the resulting products were studied.
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Influence of Process Variables on Chemical Devulcanization
Chemical devulcanization of sulfur cured natural rubber (NR) was investigated using benzoyl peroxide (BPO) as a devulcanizing agent.
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Influence of process variables on chemical ... - DeepDyve
Various techniques have been proposed for recycling of waste rubber including chemical method [4] , rubber incineration for production of energy [5] , grinding and using rubber powder in civil engineering [6,7] or as filler in rubber and plastics [8–10] or for blending with raw rubber [11,12] .
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Recycling and reuse of resources – Rubber
Recycling of Rubber Practical Action Type of rubber Application Natural rubber Commercial vehicles such as lorries, buses and trailers. Styrene-butadiene rubber (SBR) and Butadiene rubber (BR) Small lorries, private cars, motorbikes and bicycles. Butyl rubber (IIR) Inner tubes.
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Chemical recycling of sulfur-cured natural rubber using
Sulfur-cured unfilled natural rubber (NR) was devulcanized in supercritical CO2 (scCO2) by using diphenyl disulfide (DD) as a devulcanizing reagent. The product was fractionated into sol and gel components. The fraction of sol component that contains reusable linear polymer increased with the
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Mechano-chemical recycling of sulfur cured natural rubber
The importance of recycling of rubbers without adding chemicals for their devulcanization and reuse of devulcanized rubbers in a factory floor are stressed.Sulfur-cured filled natural rubber (NR) is successfully reclaimed by using a renewable resource material (RRM) and diallyl disulfide (DADS)
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Sulfur vulcanization
Sulfur vulcanization is a chemical process for converting natural rubber or related polymers into materials of a variety of hardness, elasticity, and mechanical durability by heating them with sulfur or other equivalent curatives or accelerators.
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Chemical recycling of sulfur-cured natural rubber using superc
Chemical recycling of sulfur-cured natural rubber using supercritical carbon dioxide.
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Mechano-chemical recycling of sulfur cured natural rubber
Curing characteristics of the rubber vulcanizate was studied using Monsanto Rheometer, R-100 atMechano-chemical devulcanization process. The vulcanized rubber compound was ground with theThis devulcanized rubber was vulcanized again with the addition of proportional amounts of sulfur.
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Chemical recycling of sulfur-cured natural rubber using
This shareable can be hosted on any platform or network and is fully compliant with publisher copyright. Chemical recycling of sulfur-cured natural rubber using supercritical carbon dioxide. Masaaki Kojima, Masatoshi Tosaka, Yuko Ikeda. Green Chemistry, January 2004, Royal Society of
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Kyoto University | Institute for Chemical Research - Academia.edu
Chemical recycling of sulfur-cured natural rubber using supercritical carbon dioxide. We propose a green process that utilizes supercritical CO 2 (scCO 2 ) asdevulcanization reaction media for the recycling of NR vulcanizate. Therefore, scCO 2 is expected to be applicable as devulcanization
Send InquiryMasatoshi Tosaka - Chemical Scholar Citations
2003. Chemical recycling of sulfur-cured natural rubber using supercritical carbon dioxide. M Kojima, M Tosaka, Y Ikeda.A route for the thermodynamic description of strain-induced crystallization in sulfur-cured natural rubber. M Tosaka.
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Efficiency of Sulfur-bonding on the | Fig. 1: Schematic of a Cure Curve
curing with sulfur and sulfur donor systems. Probably the most complex issues in rubber compoundingThe process of crosslinking is called curing or vulcanization and the chemicals used for curingIt was found heating natural rubber with sulfur resulted in improved physical properties.
Send InquiryEnhancement of processability and foamability of ground tire rubber
Kojima M, Tosaka M, Ikeda Y (2004) Chemical recycling of sulfur-cured natural rubber using supercritical carbon dioxide.Shim SE, Yashin VV, Isayev AI (2004) Environmentally-friendly physico-chemical rapid ultrasonic recycling of fumed silica-filled poly(dimethyl siloxane) vulcanizate.
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