Morphology and dynamic mechanical properties of styrene–butadiene rubber/silica/organoclay nanocomposites manufactured by a latex method

Abstract

In this study, the styrene–butadiene rubber (SBR)/N, N‐dimethyldodecylamine‐montmorillonite nanocomposite was prepared with a latex method by applying DDA to Na+‐MMT as a modifier. The dispersion of silica and the dynamic viscoelastic properties of the SBR/silica (60 phr) compound were studied by replacing 7 phr of the silica with organoclay. By the analysis of transmission electron microscopy images and the Payne effect, the dispersion of silica in the SBR/silica (53 phr)/DDA‐MMT (7 phr) compound was further improved as compared to the SBR/silica (60 phr) compound that used only silica as a filler. The Payne effect curve of the SBR/silica/DDA‐MMT compound was close to the curve of the SBR/silica (53 phr) compound. This indicates that organically modified silicate did not form filler–filler networks with silica. Also, the SBR/DDA‐MMT compound filled with silica showed the highest values of Tg and tan δ at 0°C. This result was attributed to the shift of the tan δ curve to the right because of the relatively higher degree of crosslink. Consequently, the SBR/silica/organoclay nanocomposite showed the best skid resistance due to the increase of Tg, and the best rolling resistance due to the reduced filler–filler networks. High 100% and 300% modulus values were also achieved. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

Isothermal Crystallization Behavior of Poly(L-lactic acid)/Organo-Montmorillonite Composites

“…Xc(t) represents the percentage of relative crystallization after time t. Eqn (1) can be transformed to eqn. (2).…”

Low permeability styrene butadiene rubber/boehmite nanocomposites modified with tannic acid

“…As summarized in Fig. 8, in comparison with the rubber composites with comparable tensile strength [10,[32][33][34][35][36][37][38][39][40], SBR/BM/TA composites exhibit a lower tensile modulus but a higher elongation at break, thus appearing more flexible without sacrificing the tensile strength. Such distinctive flexibility of SBR/BM/TA composites may be associated with interlayer sliding and separation loads, which has been applied to nano-flake filled composites [41].…”

“…8. Comparison of tensile modulus (at 300% strain) and elongation at break for various nanofiller filled rubber composites [10,[32][33][34][35][36][37][38][39][40]. Data in the bracket is tensile strength of the rubber composite.…”

Synthesis Polymer Styrene Butadiene Hybrid Latex with Laponite Organoclay as Filler via Emulsion Polymerization Technique for Application in Paper Coating

“…The benefits of copolymerized styrene butadiene latex are many, including addition of organoclay as filler to form styrene butadiene hybrid polymer or nanocomposite. This modification offered this synthetic latex essential to an ever-widening group of markets and also to improve final performance of the products [3]. Depending on the interphase force between the polymer and organoclay, effect on different morphology are thermodynamically understood such as intercalated structure, flocculated structure and exfoliated structure [4,5].…”