Effect of polyethylene glycol on the properties of styrene‐butadiene rubber/organoclay nanocomposites filled with silica and carbon black

Abstract

Polyethyene glycol (PEG) is widely used as a dispersing agent and can also be used to prevent the adsorption of ingredients on the surface of silica. From the XRD results, PEG that was used as the dispersing agent on the SBR/organoclay compound filled with silica and carbon black (CB) was intercalated between the organoclay layer. Additionally, the interactions with the PEG differed depending on whether 3-aminopropyltriethoxysilane (APTES) or N,N-dimethyldodecylamine (DDA) were used as clay modifiers. When PEG was added, the T g of the SBR/silica/ APTES-MMT compound increased through the formation of hydrogen bonds between the ether linkages of PEG and the hydroxyl groups of APTES. For the SBR/silica/DDA-MMT compound with PEG, slippage occurred between the silicate, and DDA because of the alkyl chain of DDA. The SBR/ silica/APTES-MMT/CB compound with PEG exhibited the highest T g value and the highest bound rubber content, with high modulus values at 100 and 300%. The SBR/silica/ DDA-MMT/CB compound had the best properties in terms of the wet skid resistance and the rolling resistance.

Dispersion and properties of natural rubber‐montmorillonite nanocomposites fabricated by novel in situ organomodified and latex compounding method

“…Therefore, the peaks at the q value of 1.62 nm −1 and 3.24 nm −1 are attributed to the characteristic peak of the stearic acid crystal. This finding was similar to the previous reports on rubber‐MMT nanocomposites . Interestingly, the intensity of stearic acid crystal slightly increased with increasing cationic surfactant loading (Fig.…”

Reduction of filler networking in silica based elastomeric nanocomposites with exfoliated organo-montmorillonite

“…The addition of OC to silica based composite could thus lead to the en-hancement of the filler networking phenomenon. Only a few papers are available on elastomeric CPN containing silica and OC: they are based on poly(1,4-cis-isoprene) from Hevea brasiliensis (natural rubber, NR) (Rattanasom and Prasertsri, 2012) and poly(styrene-co-butadiene)(SBR) (Kim et al, 2009(Kim et al, , 2011(Kim et al, , 2013. The presence of OC was shown to enhance the tensile moduli and to worsen the ultimate properties (Kim et al, 2011) and it was reported that OC does not form filler-filler net-works with silica (Kim et al, 2013).…”

Effect of polyethylene glycol-intercalated organoclay on vulcanization characteristics and reinforcement of natural rubber nanocomposites

“…The increase in specific surface area of clay platelets/stacks and the improved compatibility between the clay platelets and rubber molecules through PEG molecules would lead to a stronger interaction between clay and rubber molecules, resulting in higher tensile properties of NROCN4-P. Kim at al. 18 have also shown the effect of PEG on preparation of SBR/organoclay compounds filled with binary (i.e. organoclay/silica) and tertiary (i.e.…”