The Effect of Dicumyl Peroxide Vulcanization on the Properties &amp; Morphology of Polypropylene/Ethylene-Propylene Diene Terpolymer/Natural Rubber Blends

Halimatuddahliana,; Ismail, Hanafi; Akil, Hazizan Md

doi:10.1080/009140390901752

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…After the reaction, an insoluble polymer is formed, indicating the formation of a gel or crosslinked material. It is well known that free radical initiators can be used as crosslinking agents in NR because they can create free radicals on polymer chains via hydrogen abstraction processes . The formation of free radicals on polymer chains leads to crosslinking reactions between polymer chains.…”

Section: Resultsmentioning

confidence: 99%

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

Sansuk

Phetrong

Paoprasert

2017

Polymer International

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Stimuli‐responsive elastomers are smart materials for sensing applications. Natural rubber (NR) is a renewable elastomer with excellent elasticity and fatigue resistance. In this work, a straightforward method for the preparation of pH‐responsive crosslinked materials from NR and poly(4‐vinylpyridine) (P4VP) via free radical crosslinking reaction using benzoyl peroxide (BPO) as an initiator is described. The effects of P4VP and BPO concentrations, reaction time and reaction temperature on immobilization percentage were investigated. It was found that the immobilization percentage reached 90% when using a P4VP concentration of 150 phr and a BPO concentration of 10 phr for 24 h at 90 °C. The pH responsiveness of the crosslinked materials was studied via water swelling, water contact angle and dye release measurements. Unlike unmodified rubber, the P4VP‐crosslinked NR was found to be pH‐responsive in acidic solution. Indigo carmine adsorption studies showed the Langmuir isotherm suggesting monolayer coverage of dye on the rubber surface. The dye could also be released upon increasing the pH of solution above 4. Based on these results, the introduction of pH responsiveness to NR will lead to novel responsive rubber‐based materials that can be used in biomedical and sensing applications. © 2016 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

Sansuk

Phetrong

Paoprasert

2017

Polymer International

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“…The reduction of elongation at break is caused by the chain scission reaction in natural rubber phase in the presence of DCP. 19 The stress-strain plots of NR 85 CS 15 blend system with different DCP concentrations are shown in Figure 6. Table II shows the tensile properties of NR 85 CS 15 blend at different DCP concentrations (up to 20 p.p.h.r).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Perhaps the particle size reduction and accompanying packing densification contributes to the enhanced hardness. The hardness values of the blend NR 85 CS 15 for different DCP concentrations are given in Table II …”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Mechanical Properties and Swelling Behavior of Cross-Linked Natural Rubber/Chitosan Blends

Johns

Rao

2009

International Journal of Polymer Analysis and Characterization

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This article discusses properties such as surface hardness, solvent uptake, cross-link density, diffusion coefficient, and tensile properties of vulcanized natural rubber (NR)/chitosan (CS) blends. Dicumyl peroxide was selected as a cross-linking agent. In the case of tensile properties, peroxide vulcanized blends show higher tensile strength and hardness (Shore A) than the unvulcanized blend. The effect of thermal aging on mechanical properties of vulcanized NR/CS blends was also examined. The solvent-resistance properties of these vulcanized blends were investigated by the equilibrium swelling method using benzene as solvent. The impact of weight fraction of chitosan on the transport properties of vulcanized blend was also analyzed. The improved solvent resistance for peroxide vulcanized blends proved the formation of crosslinks in the rubber phase. The blends showed reduced swelling rate due to the tortuosity of the path and the reduced transport area in blended samples.

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Temperature-responsive N-isopropylacrylamide-grafted natural rubber

2017

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The Effect of Dicumyl Peroxide Vulcanization on the Properties & Morphology of Polypropylene/Ethylene-Propylene Diene Terpolymer/Natural Rubber Blends

Cited by 6 publications

References 14 publications

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

Preparation of pH‐responsive crosslinked materials from natural rubber and poly(4‐vinylpyridine)

Mechanical Properties and Swelling Behavior of Cross-Linked Natural Rubber/Chitosan Blends

Temperature-responsive N-isopropylacrylamide-grafted natural rubber

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