Mechanical and morphology characteristics of natural rubber-styrene butadiene rubber (NR-SBR) blends in the presence of natural microbentonite

Abstract Natural rubber (NR) has been the world renewable natural elastomer produced mainly in South East Asia from the sap of rubber tree (hevea brasiliensis). However it only exported to manufacturing countries for production of various engineering and specialty rubber products. Blending of the natural rubber with synthetic rubber such as styrene butadiene rubber (SBR) is a mean to improve engineering specification of the NR, especially due to exposure of mineral oils during its service life. Whereas natural microbentonite functions not only as filler but also as coagulant breaker in both SIR-10 and SBR matrices, which improves miscibility of the blends. In this work blending of Indonesian natural rubber (NR: SIR-10) with styrene butadiene rubber (SBR) were carried out in reflux reactor in xylene solution in the presence of various loading of natural microbentonite as fillers. Miscibility of the blends were measured from their mechanical properties as well as morphology of their fracture surfaces using electron microscopy (SEM). It was found that optimum loading of microbentonite in the NR/SBR (weight ratio: 50/50) blend was 3 per hundred rubber (phr), which showed good adhesion of the rubber matrices onto the filler surface and without any agglomeration.

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Knowledge Management of Net Requirements in Using Natural Rubber in Thai Rubber Industry to Support the Increase in Using Natural Rubber within Thailand

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.851.117 ◽

2016 ◽

Vol 851 ◽

pp. 117-121

Author(s):

Pran Hanthanon ◽

Thiti Kaisone ◽

Chanon Wiphanurat ◽

Tarinee Nampitch

Keyword(s):

Nmr Spectroscopy ◽

Natural Rubber ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Department Stores ◽

Rubber Industry ◽

H Nmr ◽

Synthetic Rubber ◽

Styrene Butadiene ◽

C Nmr

A blend of natural rubber (NR) and styrene butadiene rubber (SBR) was tested against conventional rubber products sold in department stores and markets, using nuclear magnetic resonance (NMR) spectroscopy to measure the amount of natural or synthetic rubber in the product. 1H-NMR spectroscopy was employed for the rubber blend and 13C-NMR spectroscopy for conventional products. The chemical shift of all the samples from the structure of natural rubber (cis-1,4 polyisoprene) was observed.

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Styrene Butadiene Rubber/Epoxidized Natural Rubber (SBR/ENR50) Nanocomposites Containing Nanoclay and Carbon Black as Fillers for Application in Tire-Tread Compounds

Journal of Macromolecular Science Part B ◽

10.1080/00222348.2016.1230464 ◽

2016 ◽

Vol 55 (10) ◽

pp. 969-983 ◽

Cited By ~ 4

Author(s):

Sima Ahmadi Shooli ◽

Mitra Tavakoli

Keyword(s):

Carbon Black ◽

Natural Rubber ◽

Epoxidized Natural Rubber ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Styrene Butadiene

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Tensile Behavior after Oxidative Aging of Gum and Black-Filled Vulcanizates of SBR and NR

Rubber Chemistry and Technology ◽

10.5254/1.3538829 ◽

1999 ◽

Vol 72 (4) ◽

pp. 721-730 ◽

Cited By ~ 39

Author(s):

G. R. Hamed ◽

J. Zhao

Keyword(s):

Tensile Strength ◽

Natural Rubber ◽

Tensile Behavior ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Oxidative Aging ◽

Prolonged Aging ◽

Aging Period ◽

Early Aging ◽

Styrene Butadiene

Abstract Typical sulfur-cured vulcanizates of styrene-butadiene rubber (SBR) and natural rubber (NR) were prepared, and subjected to air-oven aging at 100 °C. Gum specimens exhibited an initial aging period in which stiffness was unchanged, while tensile strength and strain-to-break were significantly reduced. In contrast, black-filled vulcanizates stiffened during early aging. After intermediate aging times, NR specimens softened, while SBR stiffened. With prolonged aging, all compositions became hard and inextensible.

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