New fabricate of styrene–butadiene rubber/montmorillonite nanocomposites by anionic polymerization

Zhang, Zhenjun; Zhang, Lina; Li, Yang; Xu, Huifang

doi:10.1016/j.polymer.2004.11.008

Cited by 77 publications

(48 citation statements)

References 27 publications

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“…It has been argued that this latter situation, i.e. reduction of the size of tactoids to just two or three layers, can be considered practically equivalent to exfoliation, as far as properties are concerned [6,30,[32][33][34]. The nucleation behavior of perkalite was also studied, by DSC and PLOM.…”

Section: Resultsmentioning

confidence: 99%

The effect of a synthetic double layer hydroxide on the rate of II→I phase transformation of poly(1-butene)

Marega¹,

Causin²,

Neppalli³

et al. 2011

Express Polym. Lett.

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Section: Resultsmentioning

confidence: 99%

The effect of a synthetic double layer hydroxide on the rate of II→I phase transformation of poly(1-butene)

Marega¹,

Causin²,

Neppalli³

et al. 2011

Express Polym. Lett.

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“…In our previous work, a new fabrication of styrene-butadiene rubber/MMT nanocomposites by anionic polymerization was studied, and an improvement in the mechanical properties and thermal stability was indicated. 37 In this study, exfoliated SBS/MMT nanocomposites were synthesized by anionic polymerization with n-butyllithium (n-BuLi) as an initiator. The effect of the organophilic montmorillonite (OMMT) content on the structure and properties of the nanocomposites was investigated and discussed.…”

Section: Introductionmentioning

confidence: 99%

Styrene–butadiene–styrene/montmorillonite nanocomposites synthesized by anionic polymerization

Zhang

et al. 2005

J of Applied Polymer Sci

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ABSTRACT:We successfully synthesized an exfoliated styrene-butadiene-styrene triblock copolymer (SBS)/montmorillonite nanocomposite by anionic polymerization. Gel permeation chromatography showed that the introduction of organophilic montmorillonite (OMMT) resulted in a small high-molecular-weight fraction of SBS in the composites, leading to a slight increase in the weight-average and number-average molecular weights as well as the polydispersity index. The results from 1 H-NMR revealed that the introduction of OMMT almost did not affect the microstructure of the copolymer when the OMMT concentration was lower than 4 wt %. Transmission electron microscopy and X-ray diffraction showed a completely exfoliated nanocomposite, in which both polystyrene and polybutadiene blocks entered the OMMT galleries, leading to the dispersion of OMMT layers on a nanoscale. The exfoliated nanocomposite exhibited higher thermal stability, glass-transition temperature, elongation at break, and storage modulus than pure SBS.

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“…Existem algumas pesquisas nesta área de nanocompósitos de látex [9] , SBR [10] , borracha natural [11] , borracha termoplástica do tipo SBS [12] , nanocompósitos híbridos [13] e blendas de nanocompósitos de borracha com PP [14] . Geralmente a adição da argila na matriz polimérica favorece no ganho de propriedades mecânica.…”

Section: Introductionunclassified

Efeito do SBS Epoxidado como um Agente Compatibilizante para Obtenção de Nanocompósitos de SBS/Argila Cloisite 10A

Silva¹,

Jacobi²,

Santos³

et al. 2014

Polímeros

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Resumo: Atualmente, cargas nanométricas são utilizadas para desenvolver novos materiais poliméricos com melhor desempenho mecânico. Neste trabalho, foi empregada uma mistura de borracha termoplástica de poli(estireno-b-butadieno-b-estireno) (SBS) e de argila Montmorilonita (Cloisite 10A) via intercalação por fusão. Uma suspensão de Cloisite 10A em ciclohexano foi adicionada a SBS em solução. Para maior compatibilidade entre a argila e a borracha termoplástica utilizou-se uma borracha termoplástica epoxidada como agente compatibilizante. Neste estudo, a proporção argila compatibilizante foi de 0,6 até 3,0 para verificar a influência desta proporção nas propriedades mecânicas dos nanocompósitos. As propriedades morfológicas e mecânicas dos nanocompósitos foram avaliadas através da difração de raios X, microscopia eletrônica de transmissão, ensaio de tração, análise dinâmico-mecânica (DMA) e avaliação do torque final da mistura. A combinação de argila/conpatibilizante favoreceu a formação de estruturas mais alongadas de argila que promoveram o ganho de módulo e tensão com pequena redução de alongamento. Palavras-chave: Nanocompósitos, borracha termoplástica do tipo SBS, borracha epoxidada. Epoxidized SBS as Compatibilizer for Obtaining SBS/Clay Cloisite 10A NanocompositesAbstract: Nanoscale fillers have been used to develop new polymeric materials with better mechanical performance. In this study, a mixture of thermoplastic rubber, poly (styrene-b-butadiene-b-styrene) (SBS), and Montmorillonite (Cloisite 10A) was obtained via the melt intercalation. A suspension of Cloisite 10A in cyclohexane was added to SBS in solution. To increase the compatibility between the clay and the thermoplastic rubber an epoxidized rubber was used as coupling agent. The proportion of clay and compatibilizer was changed from 0.6 to 3.0 to probe the influence of this ratio on the mechanical properties of the nanocomposites. The morphological and mechanical properties were evaluated using X-ray diffraction, transmission electron microscopy, tensile testing, dynamic mechanical analysis (DMA) and evaluation of the final torque of the mixture. The combination of clay /compatibilizer favored the formation of elongated structures, leading to an increased modulus and strength with a small reduction in elongation.

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New fabricate of styrene–butadiene rubber/montmorillonite nanocomposites by anionic polymerization

Cited by 77 publications

References 27 publications

The effect of a synthetic double layer hydroxide on the rate of II→I phase transformation of poly(1-butene)

The effect of a synthetic double layer hydroxide on the rate of II→I phase transformation of poly(1-butene)

Styrene–butadiene–styrene/montmorillonite nanocomposites synthesized by anionic polymerization

Efeito do SBS Epoxidado como um Agente Compatibilizante para Obtenção de Nanocompósitos de SBS/Argila Cloisite 10A

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