Thermal Degradation of Natural Rubber/Styrene Butadiene Rubber Latex Blends by Thermogravimetric Method

Varkey, Jyothi T.; Augustine, Sunny; Thomas, Sabu

doi:10.1081/ppt-100100038

Cited by 46 publications

(37 citation statements)

References 26 publications

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“…Polyamides are known for potential applications where the properties of thermal stability and fire resistance are necessary to be controlled [1][2][3][4]. Several articles are available to prove the great impact of the thermal stability of polymers on blending [5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric and wide angle X-ray diffraction analysis of thermoplastic elastomers from nylon copolymer and EPDM rubber

Komalan¹,

George

Varughese

et al. 2008

Polymer Degradation and Stability

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Section: Introductionmentioning

confidence: 99%

Thermogravimetric and wide angle X-ray diffraction analysis of thermoplastic elastomers from nylon copolymer and EPDM rubber

Komalan¹,

George

Varughese

et al. 2008

Polymer Degradation and Stability

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“…By contrast, samples with 30% of B and BT showed about 25% of remnant mass, this value is lower than expected. This could be attributed to heterogeneity of these compounds because of high levels of filler due to formation of agglomerates [22]. The activation energy (E) calculated according to the E 2 Function method for neat NBR was 238.03 kJ/mol for a heating rate of 3°C/min.…”

Section: Filler Characterizationmentioning

confidence: 99%

“…The elastomer without filler (NBR00) showed remaining mass percentages between 8 and 9% due to the probably of crosslinking reactions produced during the degradation process, also this remaining mass contains the contribution of the additives used in the process of vulcanization of the elastomer. Additionally, the synthetic rubber (NBR) decomposition was produced by random-chain scission with intramolecular hydrogen transfer producing a weight loss above 90% [21,22].…”

Section: Filler Characterizationmentioning

confidence: 99%

Nitrile rubber–bentonite composites: a thermal degradation study

et al. 2011

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The aim of the present work was to study the kinetics of the thermal degradation mechanisms of NBR-bentonite composites by means of three methods: E2 Function, Coast-Redfern, and Invariant Kinetics Parameters (IKP). Composites with 10, 20, and 30 phr of pristine bentonite and of treated bentonite with octadecylamine were prepared. Thermogravimetric analysis was followed at different heating rates (5, 7, 10, and 13°C/min) under N 2 atmosphere. The kinetic parameters values calculated according to the E 2 Function reflect a decrease in the activation energy with the increase in the filler content, being this effect more pronounced for the treated filler, as an indicative of a lower thermal stability. With respect to the IKP method, the activation energy of the different composites lies between 262 and 293 kJ/mol. The distribution of probabilities associated to the 18 kinetic functions indicate that all the studied systems present the kinetic model of nucleation and nuclei growth as the most probable degradation mechanism, S3 with 24% of probability and S1, S2, and S4 with 12%; followed by the interphase reaction model with the S6, S7, and S8 functions with a probability ranging between 13 and 10%. In addition, we can conclude that both types of bentonites employed in this study promote an increase in the probability of the diffusion mechanism, being this fact an indicative of the formation of small molecules that diffuse in the interphase and give rise to degradation mechanisms corresponding to the reaction order kinetic model. Finally, we can say that the results of the thermal study can be corroborated by the rheological behavior and the morphology of the NBR-bentonite composites.

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“…Natural rubber (NR) is normally modified by blending with synthetic rubbers [1][2][3][4] and=or fillers [5][6][7][8] , in order to improve its physical properties, processability, thermal stability and end-use performances. Styrene butadiene rubber (SBR) is a general purpose synthetic rubber with good abrasion resistance and good aging stability [9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Effects of Nanosized Polystyrene and Polystyrene-Encapsulated Nanosilica on Physical Properties of Natural Rubber/Styrene Butadiene Rubber Nanocomposites

Boonmahitthisud

Chuayjuljit

2012

Polymer-Plastics Technology and Engineering

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Natural rubber (NR)/styrene butadiene rubber (SBR) nanocomposites have been prepared with nanosized polystyrene (nPS) and polystyrene-encapsulated nanosilica (PS-nSiO 2 ) through latex compounding. The nPS and PS-nSiO 2 were synthesized by differential microemulsion polymerization. 80/20 NR/SBR blend was filled with various loadings of nPS and PS-nSiO 2 (1, 3, 5 and 7 phr). The influence of nanofillers on the tensile properties, dynamic mechanical properties and thermal stability of the resulting nanocomposites was quantified. The results showed the improvement in the tensile strength, modulus and thermal stability by the appropriate amount of nPS and PS-nSiO 2 in the nanocomposites, whilst the elongation at break slightly deteriorated.

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Thermal Degradation of Natural Rubber/Styrene Butadiene Rubber Latex Blends by Thermogravimetric Method

Cited by 46 publications

References 26 publications

Thermogravimetric and wide angle X-ray diffraction analysis of thermoplastic elastomers from nylon copolymer and EPDM rubber

Thermogravimetric and wide angle X-ray diffraction analysis of thermoplastic elastomers from nylon copolymer and EPDM rubber

Nitrile rubber–bentonite composites: a thermal degradation study

Effects of Nanosized Polystyrene and Polystyrene-Encapsulated Nanosilica on Physical Properties of Natural Rubber/Styrene Butadiene Rubber Nanocomposites

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