Antidegradation and reinforcement effects of phenyltrimethoxysilane- or N-[3-(trimethoxysilyl)propyl]aniline-modified silica particles in natural rubber composites

Tunlert, Apinya; Prasassarakich, Pattarapan; Poompradub, Sirilux

doi:10.1016/j.matchemphys.2016.01.041

Cited by 19 publications

(20 citation statements)

References 59 publications

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“…The natural rubber products are very sensitive to sunlight, oxygen, ozone, or long-term heating due to the natural rubber containing the unsaturated backbones, the carbon-carbon double bonds (>C=C<), in the chemical structure that can be easily to oxidized. [1,2] The oxidation reaction occurs due to the formation of free radicals that propagate scission reactions of rubber molecules, resulting in the loss of physical and mechanical properties. To extend the service life of natural rubber products as preventing or retarding the oxidative aging, antioxidants are necessary additives in rubber compounds.…”

Section: Introductionmentioning

confidence: 99%

Prospects for rambutan peel extract as natural antioxidant on the aging properties of vulcanized natural rubber

et al. 2021

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Natural rubber (NR) is sensitive to oxidative degradation, which needs to add commercial antioxidant for NR compounding to improve its aging properties.The aim of this study is to apply natural antioxidant obtained from extracted rambutan peel powder (RE) by methanol compared to commercial antioxidants for NR compounding in a conventional vulcanization (CV system). Two types of commercial antioxidants were N-(1,3-dimethylbutyl)-N'phenyl-pphenylenediamine (6PPD) and 2,2,4-Trimethyl-1,2dihydroquinoline (TMQ).The main phenolic compounds in RE were geraniin, corilagin, ellagic acid and gallic acid which had greater antioxidant activity based on all methods, especially for 2,2-Diphenyl-2-picrlhydrazyl radical-scavenging assay (DPPH) and had a similar antioxidant activity to 6PPD. The antioxidants were applied in NR vulcanizates at 1 phr and 2 phr to study their physical and mechanical properties. The decomposition temperature of RE was higher than for 6PPD but similar to TMQ. The decomposition temperature of the rubber vulcanizates containing RE was higher than for the commercial antioxidants. Rubber vulcanizates with RE retained similar tensile strength and modulus at 100% strain as the commercial antioxidants. Furthermore, the addition of RE in rubber vulcanizates helped to resist thermal aging at 70 C and ozone aging, particularly at 1 phr at least as well as in the commercial antioxidants. Therefore, RE can be used as an alternative natural antioxidant in natural rubber to replace commercial antioxidants.

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Section: Introductionmentioning

confidence: 99%

Prospects for rambutan peel extract as natural antioxidant on the aging properties of vulcanized natural rubber

et al. 2021

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“…30 Recently, many research groups have reported the suitable use of sol-gel-synthesized in situ silica nanoparticles as filler on the development of advanced NR composites. 39,40,83 Poompradub et al 39 investigated the effect of in situ silica as filler on the overall performance of NR compounds. The mechanical and thermal properties of NR composites with in situ alkoxide silica were more superior to those of NR composites filled with ex situ silica.…”

Section: Applications Of Sol-gel-based Materials As Filler In Rubber Technologymentioning

confidence: 99%

Emerging Advances in Rubber Technology by the Suitable Application of Sol-Gel Science and Technology

Roy

Debnath

Basu

et al. 2021

Rubber Chemistry and Technology

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In recent years, the application of sol-gel science to industrial polymer research has offered advancements in rubber technology. The use of sol-gel–synthesized materials for the development of highly reinforced rubber composites is the most commonly adopted and popular method exercised by rubber scientists. This article comprehensively reviews the recent progress regarding preparation and properties of sol-gel–synthesized nanoparticles-based rubber composites. The pragmatic consequences of sol-gel–synthesized nanoparticles in rubber compounds are systematically described through rheological, mechanical, and thermal properties. Emphatic focus is given to understanding the reinforcement mechanism of rubber composites by the use of sol-gel–derived alkoxide silica as filler. The properties of rubber nanocomposites are usually dependent on the dispersion of sol-gel–synthesized nanoparticles into the rubber matrix. The results reviewed from prolific studies suggested that sol-gel science has tremendous potential to develop high performance rubber nanocomposites for future industrial application.

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“…The MSi particles were prepared by mixing 0.013 mol TEOS, 0.702 mol EtOH, 0.052 mol ammonia solution, 0.389 mol deionized water and 0.007 mol APTES at ambient temperature and stirring for 24 h. 33 For preparation of the USi particles, APTES was not added to the solution. The obtained USi or MSi particles were then separated by centrifugation, washed in deionized water, and dried in an oven at 110 C. The idealized mechanism for silica modication by APTES is shown schematically below.…”

Section: Preparation Of Msi Particlesmentioning

confidence: 99%

“…However, in general, rubber products cannot be used at high temperatures due to their low thermal properties. Silica is a reinforcing ller that is widely used in rubber products, 31,32 since it can improve not only the mechanical but also the thermal properties of rubber products, 33 and it has been reported to be an important physisorption material for CO 2 adsorption. 34,35 However, the selectivity of CO 2 adsorption is low due to the absence of active sites for CO 2 capture.…”

Section: Introductionmentioning

confidence: 99%

Natural rubber latex foam with particulate fillers for carbon dioxide adsorption and regeneration

2019

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To reduce the carbon dioxide (CO 2 ) concentration in the atmosphere, natural rubber (NR) was developed as a rubber foam for CO 2 adsorption. Although the CO 2 adsorption capacity of the NR latex foam produced by mixing with a cake mixer (CM) was higher than that produced with an overhead stirrer (OS), both capacity values were still low. To improve the CO 2 adsorption capacity, the use of unmodified and (3-aminopropyl) triethoxysilane-modified silica particles as fillers in the CM rubber foam matrix was examined. The highest CO 2 adsorption capacity, from a mixed gas flow rate of 100 mL min À1 at ambient temperature and pressure, was obtained with the CM foam filled with 5 parts by weight per hundred parts of rubber filled with modified silica particles (4.08 mg g À1 ). The CO 2 adsorption capacity of this foam was approximately 1.11-and 2.87fold higher than that of the CM foam filled with unmodified silica particles (3.69 mg g À1 ) and unfilled CM rubber (1.42 mg g À1 ), respectively. Morphological analysis supported that the cell size and number of pores per cell of the NR latex foam, which were higher in the CM foams than the OS foams, were important factors for evaluating CO 2 adsorption. In addition to physisorption between CM and CO 2 , chemisorption between the modified silica particles and CO 2 increased the CO 2 adsorption capacity.

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Antidegradation and reinforcement effects of phenyltrimethoxysilane- or N-[3-(trimethoxysilyl)propyl]aniline-modified silica particles in natural rubber composites

Cited by 19 publications

References 59 publications

Prospects for rambutan peel extract as natural antioxidant on the aging properties of vulcanized natural rubber

Prospects for rambutan peel extract as natural antioxidant on the aging properties of vulcanized natural rubber

Emerging Advances in Rubber Technology by the Suitable Application of Sol-Gel Science and Technology

Natural rubber latex foam with particulate fillers for carbon dioxide adsorption and regeneration

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