Morphology and mechanical properties of clay/styrene-butadiene rubber nanocomposites

Abstract

Based on the character of a clay that could be separated into many 1‐nm thickness monolayers, clay styrene‐butadiene rubber (SBR) nanocomposites were acquired by mixing the SBR latex with a clay/water dispersion and coagulating the mixture. The structure of the dispersion of clay in the SBR was studied through TEM. The mechanical properties of clay/SBR nanocomposites with different filling amounts of clay were studied. The results showed that the main structure of the dispersion of clay in the SBR was a layer bundle whose thickness was 4–10 nm and its aggregation formed by several or many layer bundles. Compared with the other filler, some mechanical properties of clay/SBR nanocomposites exceeded those of carbon black/SBR composites and they were higher than those of clay/SBR composites produced by directly mixing clay with SBR through regular rubber processing means. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1873–1878, 2000

Rubber‐Clay Nanocomposites

“…This approach was applied for blending Mt in rubbers such as NR [28,29], SBR [28][29][30][31][32], NBR [28,29,33], XNBR [29]. Moreover, bentonite was blended with SBR [34][35][36][37] and SVBR (V = vinylpiridine) [34,35] and rectorite was blended in SBR [38,39]. Different electrolytes were used: triethylenetetrammonium chloride (2% wt solution) [29,38,39], diluted sulphuric acid solution [28,[30][31][32]36], 1% calcium chloride aqueous solution [32], dilute hydrochloric acid solution [34,35,37], dilute dichloroacetic acid solution [33].…”

“…Moreover, bentonite was blended with SBR [34][35][36][37] and SVBR (V = vinylpiridine) [34,35] and rectorite was blended in SBR [38,39]. Different electrolytes were used: triethylenetetrammonium chloride (2% wt solution) [29,38,39], diluted sulphuric acid solution [28,[30][31][32]36], 1% calcium chloride aqueous solution [32], dilute hydrochloric acid solution [34,35,37], dilute dichloroacetic acid solution [33]. A scheme for blending a pristine clay with a rubber latex, as reported by Zhang, is shown in Figure 4.…”

“…In a SBR matrix as well, tensile and tear strengths were improved by adding a pristine Mt via emulsion blending, up to 20 phr [29], without any improvement for a further addition [35].…”

Effect of Amino Silane Coupling Agent on the AC Electrical Breakdown Phenomena of Epoxy/Layered Silicate Nanocomposite in Needle-plate Electrodes

“…have been introduced to polymer matrixes as a nanosized filler in order to give them some special characteristics such as electrical insulation, modulus, hardness, thermal stability, etc [1][2][3]. However, they exist as micro-sized multilayered bulk shapes prior to being used in a polymer matrix.…”

“…The driving force to separate them from each other is given by polymer penetration into the intergalleries between the silicate monolayers [4,5]. The polymer chains are presented in the intergalleries forming A coil-like conformation which leads to intercalated or exfoliated nonocomposites [2,3].…”