Mechanical and dynamic mechanical properties of miscible blends of epoxidized natural rubber and poly(ethylene-co-acrylic acid)

Mohanty, S.; Nando, G. B.; Vijayan, Kalyani; Neelakanthan, N.R.

doi:10.1016/s0032-3861(96)00391-6

Cited by 42 publications

(25 citation statements)

References 14 publications

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“…This could be due to good interaction between HDPE and UHMWPE. Mohanty and Nando 31 reported that a good interaction between the blend components is one factor that leads to a synergistic effect. Also, the results from DSC (Table II and Fig.…”

Section: Dscmentioning

confidence: 99%

High‐density polyethylene/ultrahigh‐molecular‐weight polyethylene blend. I. The processing, thermal, and mechanical properties

Lim

Ishak

Ishiaku

et al. 2005

J of Applied Polymer Sci

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ABSTRACT:Various blend ratios of high-density polyethylene (HDPE) and ultrahigh-molecular-weight polyethylene (UHMWPE) were prepared with the objective of determining their suitability as biomaterials. Although the presence of HDPE in the blends enabled melt processing, the presence of UHMWPE helped to improve the toughness of the resulting blends. The processability of the blends was investigated with the Brabender torque, which was used as an indication of the optimum blend conditions. The blends were characterized with differential scanning calorimetry. The mechanical tests performed on the blends included tensile, flexural, and impact tests. A 50:50 (w/w) blend yielded optimum properties in terms of the processability and mechanical properties. The tensile property of the 50:50 blend was intermediate between those of HDPE and UHMWPE, but the strain at break increased 200% in comparison with that of both neat resins. The energy at break of the 50:50 blend revealed an improvement in the toughness. The fracture mechanism was also investigated with scanning electron microscopy.

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Section: Dscmentioning

confidence: 99%

High‐density polyethylene/ultrahigh‐molecular‐weight polyethylene blend. I. The processing, thermal, and mechanical properties

Lim

Ishak

Ishiaku

et al. 2005

J of Applied Polymer Sci

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“…Natural rubber has been blended with many polymers such as chitosan [10,11] , starch [6] , cellulose [12] , polypropylene [13] , poly (acrylic acid) [14] , polyethylene [15] and polystyrene [16] . Only a limited number of investigations have been carried out on the preparation of IPNs from NR and PVA.…”

Section: Introductionmentioning

confidence: 99%

Novel Interpenetrating Polymer Networks Based on Natural Rubber/Poly(vinyl alcohol)

Johns

Nakason

2012

Polymer-Plastics Technology and Engineering

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Fully interpenetrating polymer networks (IPN) based on natural rubber (NR) and poly(vinyl alcohol) (PVA) were prepared by using glutaraldehyde as the common cross-linking agent. The mechanical performance of this system has been studied in detail. Stress-stain behavior, tensile strength, elongation at break and young's modulus was determined. Effects of weight fraction on the physical properties of NR/PVA IPN's were also studied along with the thermal degradation behavior using thermogravimetric analysis. A remarkable improvement was observed in the mechanical strength and the thermal stability of the blend by the formation of IPN. The activation energy of degradation was analyzed using the Horowitz-Metzger equation. The solvent resistance properties of these samples were investigated by the equilibrium swelling method using benzene as a solvent. The impact of weight fraction of PVA on the solvent transport of the system was also analyzed. A reduction in swelling was exhibited with the addition of PVA to natural rubber by the formation of IPN. The water absorbability of the blend decreases by the addition of glutaraldehyde.

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“…Apart from raw NR, modified forms of NR have also been extensively used to prepare TPNRs. These include epoxidized natural rubber (ENR) [25][26][27], maleated natural rubber (MNR) [28,29], and natural rubber-g-poly(methyl methacrylate) [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Dual phase continuity and phase inversion phenomena in natural rubber/ethylene vinyl acetate (EVA) copolymer blends

2012

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Abstract:Blending of polymers provide an attractive route to obtain new materials with unique combination of properties. Among the possible blend morphologies are dispersion of droplet, fiber, lamella in continuous phase and cocontinuous morphology. The unique feature of co-continuous is the mutual interpenetration of the phases which exhibits a number of advantageous properties and hence wider range of applications. Therefore, it is important to perform accurate determination of the co-continuous phase morphology and phase inversion phenomena. The rubber co-continuity index (solvent extraction), SEM micrographs and dynamic properties indicated the inversion occurred in the blends with rubber content 40 to 50 wt%. Furthermore, three empirical models (i.e., Ultracki, Steiman et al and Gergen et al models) could predict the phase continuity and phase inversion phenomena but other two (i.e., Paul-Barlow and MetelkinBlekht models) failed. Therefore, based on rubber co-continuity index, SEM micrographs, dynamic mechanical properties and prediction, the inversion phenomena occurred in the blends with rubber contents in a range of 40-50 wt%. Full co-continuity was found in the blends with the rubber contents of 46 to 60 wt%.

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Mechanical and dynamic mechanical properties of miscible blends of epoxidized natural rubber and poly(ethylene-co-acrylic acid)

Cited by 42 publications

References 14 publications

High‐density polyethylene/ultrahigh‐molecular‐weight polyethylene blend. I. The processing, thermal, and mechanical properties

High‐density polyethylene/ultrahigh‐molecular‐weight polyethylene blend. I. The processing, thermal, and mechanical properties

Novel Interpenetrating Polymer Networks Based on Natural Rubber/Poly(vinyl alcohol)

Dual phase continuity and phase inversion phenomena in natural rubber/ethylene vinyl acetate (EVA) copolymer blends

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