Sorption and Mechanical Properties of Nitrile Rubber Compatibilized Natural Rubber—Poly (Ethylene-Co-Vinyl Acetate) Blends

Sujith, A.; Unnikrishnan, G.; Radhakrishnan, C. K.

doi:10.1177/0095244307078777

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…Similar methodology has been reported elsewhere [31][32][33]. The weight loss was found to be proportional to time, area of the membrane, and the pressure gradience across the membranes (it can be considered zero outside the vials), while inversely proportional to the thickness of the membrane.…”

Section: Vapor Permeation Studiessupporting

confidence: 72%

Natural Rubber/Acrylonitrile Butadiene Rubber Blend Membranes: Vapor Permeation Properties

Kumari

Radhakrishnan²,

Unnikrishnan

et al. 2009

Chem Eng & Technol

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Natural rubber (NR)/Acrylonitrile butadiene rubber (NBR) blend membranes, prepared by using dicumyl peroxide as the crosslinking agent, were tested for their vapor permeation characteristics. The permeation studies were conducted using three chlorinated hydrocarbons, viz. dichloro methane, chloroform, and carbon tetrachloride. The effects of the blend ratio, compatibilizer, penetrant size, and temperature on the vapor permeability of the membranes were investigated. The permeability of the blends was found to decrease with an increase in the NBR content, which has been attributed to the inherent solvent resistant nature of NBR. The permeation behavior of compatibilized blends was compared with those of the uncompatibilized blends. The separation efficiencies of the membranes were also tested using chloroform/acetone mixtures to complement the observations from the vapor permeation experiments.

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Section: Vapor Permeation Studiessupporting

confidence: 72%

Natural Rubber/Acrylonitrile Butadiene Rubber Blend Membranes: Vapor Permeation Properties

Kumari

Radhakrishnan²,

Unnikrishnan

et al. 2009

Chem Eng & Technol

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“…Vapor permeability was determined by measuring the weight loss of small vials containing permeant and tightly tied with the membrane of the NBR/NR blend. Similar methodology has been reported . The results of the experiments can be expressed by plotting the amount of vapour permeated, M t versus time t .…”

Section: Methodsmentioning

confidence: 91%

Transport and electrical properties of natural rubber/nitrile rubber blend composites reinforced with multiwalled carbon nanotube and modified nano zinc oxide

Thomas¹,

Thomas

Mathew

et al. 2013

Polymer Composites

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As a surface modified zinc oxide, stearic acid‐coated nano zinc oxide (ZOS) has been prepared by sol‐gel method and was used along with N‐benzylimine aminothioformamide‐N‐cyclohexyl benzthiazyl sulfonamide binary accelerator system, multiwalled carbon nanotube (MWCNT) and sulfur for vulcanizing 20/80 natural rubber/nitrile rubber (NR/NBR) blend. Different formulations have been prepared by using 1–7 phr of MWCNT. Solvent transport and electrical properties of the rubber compounds have been investigated. The equilibrium solvent uptake (Q∞) decreased with increase in concentration of the filler due to the decrease in the free volume and the increase in tortuousity. The conductivities of the vulcanizates increased with increase in the dosage of MWCNT from 1 phr in NBCNT1 to 7 phr in NBCNT4 indicating the formation of percolating network of MWCNTs in the NBR/NR matrix. POLYM. COMPOS., 35:956–963, 2014. © 2013 Society of Plastics Engineers

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“…With the addition of EVA into the NR/NBRr blends, t 90 is longer than the NR/NBRr blends without EVA, which indicates that NR is the cure‐activating component in the blends. The longer t 90 values of NR‐rich compounds are due to the higher degree of unsaturation in NR compared with EVA .…”

Section: Resultsmentioning

confidence: 99%

“…It can be seen that the swelling percentage of NR/NBRr blends with EVA is lower than that of similar blends but without EVA. The reduction in solvent uptake by the blends with increasing EVA content in the majority of the blends has been attributed to the semicrystalline nature of EVA and increased interfacial adhesion between the blend component .…”

Section: Resultsmentioning

confidence: 99%

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Ethylene vinyl acetate as compatibilizer on cure characteristics and mechanical properties of (natural rubber)/(Recycled acrylonitrile‐butadiene rubber) blends

Ahmad

Ismail

Azura

2015

Vinyl Additive Technology

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Ethylene vinyl acetate (EVA) has been used as a compatibilizer for (natural rubber)/(recycled acrylonitrile‐butadiene rubber) (NR/NBRr) blends, vulcanized by sulfur. EVA offers excellent heat, ozone, and weather resistance, whereas the vinyl acetate groups provide oil resistance to the blend. It exhibits good tear resistance and may be crosslinked. However, EVA exhibits poor low‐temperature flexibility. NBR gloves have excellent resistance to punctures, tears, and many types of chemicals, while NR has good physical and mechanical properties. NR/NBRr blends were prepared with various compositions with the EVA content fixed. Tensile properties, hardness, and swelling behavior tests were performed to determine the compatibility of NR/NBRr blends in the presence of EVA. Results indicated that incorporation of EVA into NR/NBRr blends improved tensile strength, modulus, and elongation at break compared with NR/NBRr blends without EVA. The improvement in hardness and reduction in resilience on compatibilization are due to an increase in crosslink density, which gives NR/NBRr blends better swelling resistance. Scanning electron microscopy of the fracture surfaces indicates that, with the addition of EVA in NR/NBRr blends, better adhesion between NR and NBRr was obtained, thus improving the compatibility of NR/NBRr blends. J. VINYL ADDIT. TECHNOL., 23:135–141, 2017. © 2015 Society of Plastics Engineers

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Sorption and Mechanical Properties of Nitrile Rubber Compatibilized Natural Rubber—Poly (Ethylene-Co-Vinyl Acetate) Blends

Cited by 5 publications

References 26 publications

Natural Rubber/Acrylonitrile Butadiene Rubber Blend Membranes: Vapor Permeation Properties

Natural Rubber/Acrylonitrile Butadiene Rubber Blend Membranes: Vapor Permeation Properties

Transport and electrical properties of natural rubber/nitrile rubber blend composites reinforced with multiwalled carbon nanotube and modified nano zinc oxide

Ethylene vinyl acetate as compatibilizer on cure characteristics and mechanical properties of (natural rubber)/(Recycled acrylonitrile‐butadiene rubber) blends

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