Characterization on the phase separation behavior of styrene-butadiene rubber/polyisoprene/organoclay ternary blends under oscillatory shear

Polymer blends lead to producing a new class of plastics, which may have better properties than being individual. In this study, the ternary blends of natural rubber (NR)/styrene-butadiene rubber (SBR)/nitrile rubber (NBR) were prepared via melt compounding, and then the physicomechanical properties of ternary NR/SBR/NBR blends were investigated. NR content was kept constant at 30 phr, while SBR and NBR fractions were varied simultaneously. The effect of the addition of 3 phr of ultrablend 4000 as compatibilizer on the compatibility of the rubber blends was studied. The results revealed that the use of the compatibilizer has significantly resulted in the clear stability of the scorch time and the optimum cure time of the blends. Tensile strength; stress at 100%, 200%, and 300% elongations; elongation at break %; compression strength; and compression set increase with the NBR content. There was a dramatic rise in the value of swelling ratio with the decrease of NBR. Moreover, the dynamic mechanical analysis showed some shifts in glass transition temperatures for blends to higher and lower temperatures as a function of the composition, which indicates the partial miscibility between the contributing components. Scanning electron microscopy of the tear fracture surfaces indicated that incorporation of NBR in the blends resulted in better adhesion of ternary blends and improved the tensile properties of ternary blends.

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Double-stage phase separation in dynamically asymmetric ternary polymer blends

RSC Advances ◽

10.1039/c6ra17274a ◽

2016 ◽

Vol 6 (94) ◽

pp. 92104-92114 ◽

Cited By ~ 2

Author(s):

Chen Kuang ◽

Sahar Qavi ◽

Reza Foudazi

Keyword(s):

Phase Separation ◽

Polymer Blends ◽

Methyl Ether ◽

Ternary Blends ◽

Vinyl Methyl ◽

Ethyl Methacrylate ◽

Vinyl Methyl Ether ◽

Phase Separation Behavior ◽

Ternary Polymer ◽

Separation Behavior

In this work, the phase separation behavior of ternary blends of polystyrene/poly(vinyl methyl ether)/polyisoprene, PS/PVME/PI, and polystyrene/poly(vinyl methyl ether)/poly(ethyl methacrylate), PS/PVME/PEMA are investigated.

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Phase separation and thermal aging behavior of styrene-butadiene rubber vulcanizates using liquid polymers as plasticizers studied by differential scanning calorimetry and dynamic mechanical spectroscopy

Journal of Applied Polymer Science ◽

10.1002/app.33165 ◽

2010 ◽

Vol 120 (1) ◽

pp. 434-440 ◽

Cited By ~ 10

Author(s):

Takeo Nakazono ◽

Anri Ozaki ◽

Akikazu Matsumoto

Keyword(s):

Differential Scanning Calorimetry ◽

Phase Separation ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Aging Behavior ◽

Mechanical Spectroscopy ◽

Scanning Calorimetry ◽

Dynamic Mechanical Spectroscopy ◽

Liquid Polymers ◽

Styrene Butadiene

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Evaluation of Chicken Feather and Styrene-Butadiene/Chicken Feather Composites as Modifier for Asphalts Binder

Applied Sciences ◽

10.3390/app9235188 ◽

2019 ◽

Vol 9 (23) ◽

pp. 5188 ◽

Cited By ~ 2

Author(s):

Leslie Mariella Colunga-Sánchez ◽

Beatriz Adriana Salazar-Cruz ◽

José Luis Rivera-Armenta ◽

Ana Beatriz Morales-Cepeda ◽

Claudia Esmeralda Ramos-Gálvan ◽

...

Keyword(s):

Phase Separation ◽

Rheological Properties ◽

Asphalt Binder ◽

Waste Product ◽

Rubber Matrix ◽

Styrene Butadiene Rubber ◽

Butadiene Rubber ◽

Chicken Feather ◽

Main Component ◽

Styrene Butadiene

In the present work, the evaluation of chicken feather particles (CFP) and styrene-butadiene/chicken feather (SBS-CF) composites as modifiers for asphalt binder is presented. It is well known that elastomers are the best asphalt modifiers, because their thermoplastic behavior assists asphalts in improving the range of their mechanical properties at both low and high temperatures. Nowadays, the use of natural products and byproducts as fillers for polymer matrices has been a matter of research, and the field of asphalt modification is not the exception. Chicken feather particles (CFP) is a waste material whose main component is keratin, which offers remarkable properties. In the present work, CFP was used as a filler of a styrene-butadiene rubber matrix (SBS) with radial structure, to obtain a composite intended as an asphalt modifier. Besides, raw CFP was also tested as an asphalt modifier. Physical, thermal and rheological properties of the modified asphalts were evaluated in order to determine their degree of modification with respect to the original asphalt. The results show that the addition of raw CFP improves some physical properties as penetration and decreases the phase separation; furthermore, the asphalt modified with CFP displayed similar rheological properties to those shown by the asphalt modified with SBS, while some other properties resulted in being even better, like the phase separation, with the advantage that the CFP comes from a natural waste product.

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