Thermal behaviour of natural rubber/polystyrene blends: thermogravimetric and differential scanning calorimetric analysis

Asaletha, R.; Kumaran, M. G.; Thomas, Sabu

doi:10.1016/s0141-3910(97)00229-2

Cited by 72 publications

(40 citation statements)

References 17 publications

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“…5(c, d)] differed slightly from that of NR-latex, with a weight loss of ∼5 % in the temperature range 200-300°C, consistent with the weight loss of the free surfactant that remained in the polymer matrix and low boiling point constituents [40,41]. The weight loss of the NR-latex occurred in the temperature range of 300-440°C (88 %) and at temperatures greater than 440°C (8 %), corresponding to a degradation of the non-volatile residues [42].…”

Section: Thermal Stability Measurementsmentioning

confidence: 67%

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

et al. 2014

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The performance of single-, double-and triple-chain anionic sulphosuccinate surfactants for dispersing multiwall carbon nanotubes (MWNCTs) in natural rubber latex (NR-latex) was studied using a range of techniques, including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Raman spectroscopy. The conductivities of the nanocomposites were also investigated using four-point probe measurements. Here, MWCNTs were efficiently dispersed in NR-latex with the aid of hyperbranched tri-chain sulphosuccinate anionic surfactants, specifically sodium 1,4-bis(neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulphonate (TC14). This paper highlights that TC14 performs much better than that of the commercially available surfactant sodium dodecyl sulphate (SDS), demonstrating how careful consideration of surfactant architecture leads to improved dispersibility of MWCNTs in NR-latex. The results should be of significant interest for improving nanowiring applications suitable for aerospace-based technology.

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Section: Thermal Stability Measurementsmentioning

confidence: 67%

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

et al. 2014

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“…One of the most widely accepted methods for studying the thermal properties of polymeric materials is thermogravimetry. Thermogravimetric data provides information on thermal breakdown, mass loss of the material in different stages, threshold temperature, and the nature and the extent of the degradation of the material (Asaletha et al, 1998). Typical TG/ DTG curves obtained for raw natural rubber from the IAC 500 series and the RRIM 600 clones in inert atmosphere (Figure 1) showed that the TG curve has only one large plateau and that the DTG curve has one degradation peak.…”

Section: Resultsmentioning

confidence: 99%

Assessment of growth and yield performance of rubber tree clones of the IAC 500 series

Gonçalves¹,

Júnior²,

Martins³

et al. 2011

Pesq. agropec. bras.

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-The objective of this work was to evaluate the performance of 15 clones of the IAC 500 series of Hevea brasiliensis, developed at Instituto Agronômico (IAC), over a 12-year period, in the northwest region of São Paulo State, Brazil. The 15 new clones evaluated are primary clones obtained from selected ortets within half-sib progenies. The clone RRIM 600, of Malaysian origin, was used as the control. Dry rubber yield performance over a four-year period, mean girth at the tenth year, girth increment before and during tapping, thermal properties of the natural rubber produced and other characters of the laticiferous system were evaluated. Forty percent of the clones were superior in comparison to the control for yield. Clone IAC 500 recorded the highest yield (66.81 g per tree per tapping) over four years of tapping, followed by IAC 502 (62.37 g per tree per tapping), whereas the control recorded 48.71 g per tree per tapping. All selected clones were vigorous in growth. The natural rubber from this IAC clones showed thermal stability up to 300ºC. No differences were observed in the thermal behavior of rubber among the IAC series and the RRIM 600 clones. The clones IAC 500, IAC 501, IAC 502, IAC 503 and IAC 506 are the more promising for small-scale plantations, due to growth and yield potential.Index terms: Hevea brasiliensis, bark thickness, brown bast, vigor, yield. Avaliação do vigor e do desempenho da produção de clones de seringueira da série IAC 500Resumo -O objetivo deste trabalho foi avaliar o desempenho de 15 clones da série IAC 500 de Hevea brasiliensis, desenvolvidos pelo Instituto Agronômico (IAC), durante um período de 12 anos, na região noroeste do Estado de São Paulo. Os 15 novos clones avaliados são clones primários resultantes de ortetes selecionados dentro de progênies de meios-irmãos. O clone RRIM 600, de origem Malaia, foi usado como testemunha. Foram avaliados: desempenho da produção por um período de quatro anos, média do perímetro do caule no décimo ano, incremento anual do perímetro antes e durante a sangria, propriedades térmicas da borracha natural produzida e outros caracteres do sistema laticífero. Quarenta por cento dos clones foram superiores em produção, em comparação ao clone RRIM 600. O clone IAC 500 registrou a maior produção (66,81 g por árvore por sangria) em quatro anos de sangria, seguido pelo IAC 502 (62,37 g por árvore por sangria), enquanto o clone testemunha registrou 48,71 g por árvore por sangria. Todos os clones selecionados apresentaram crescimento vigoroso. As borrachas avaliadas apresentaram estabilidade térmica até cerca de 300ºC. Não foram observadas diferenças no comportamento térmico entre os clones da série IAC e o RRIM 600. Os clones IAC 500, IAC 501, IAC 502, IAC 503 e IAC 506 são mais promissores para plantações em pequena escala, em virtude de seu crescimento e potencial produtivo.Termos para indexação: Hevea brasiliensis, espessura de casca, secamento do painel, vigor, produção.

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“…Thermoplastic elastomeric blends of natural rubber with polystyrene, polyvinyl alcohol, chitosan, polyethylene etc. are reported in the literature [2][3][4][5]. The elasticity of rubber reduced by improving the plasticity was observed with the incorporation of thermoplastic materials.…”

Section: Introductionmentioning

confidence: 86%

Thermogravimetric and Swelling Studies on the Natural Rubber Based Super Elastomer

Rs¹,

Avadhani²,

Vijayakumar³

et al. 2017

IJIREM

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The Thermal stability and solvent transport properties of elastomeric blends of natural rubber and exudated resin of Ailanthus Malabaricum tree were studied in detail. The elastomeric blend samples have been prepared from solution casting technique. Benzene was used as a common solvent for both the constituent polymers to prepare the blends. The resulting material exhibits excellent elastic properties. Thermogravimetry was employed to analyze the thermal stability of natural rubber by the addition of resin. The temperatures at various weight losses for different samples were determined from Thermogravimetric curves. The activation energy of degradation was calculated from Horowitz Metzger equation. The addition of natural rubber improves the thermal stability of resin. The solvent transport properties of the resulting samples were studied in benzene. The combination of natural rubber and the resin exudated from Ailanthus Malabaricum tree can be used to prepare the elastomeric material with suitable properties for specific applications.

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Thermal behaviour of natural rubber/polystyrene blends: thermogravimetric and differential scanning calorimetric analysis

Cited by 72 publications

References 17 publications

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

Assessment of growth and yield performance of rubber tree clones of the IAC 500 series

Thermogravimetric and Swelling Studies on the Natural Rubber Based Super Elastomer

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