Mechanical behaviour and fracture toughness evaluation of rubber toughened polypropylene nanocomposites

Lim, J. W.; Hassan, Azman; Rahmat, Abdul Razak; Wahit, Mat Uzir

doi:10.1179/174328906x79897

Cited by 21 publications

(12 citation statements)

References 50 publications

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“…The ∆H values were also increased as compared to the unfilled polymer matrix ( Table 1). Similar observations were also reported by previous researchers [16][17].…”

Section: Differential Scanning Calorimeter Analysis (Dsc)supporting

confidence: 93%

A Linear Relationship between the Mechanical, Thermal and Gas Barrier Properties of MAPE Modified Rubber Toughened Nanocomposites

Jamal¹

2010

IIUMEJ

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Composites based on high density polyethylene (HDPE), ethylene propylene diene monomer (EPDM) and organophilic montmorillonite (OMMT) clays were prepared by melt compounding followed by compression molding. The addition of clay as well as compatibilizer agent (maleic anhydride polyethylene (MAPE)) considerably improved the tensile properties of nanocomposites systems. The largest improvement in mechanical and thermal properties occurred at clay loading levels of 4% (2-8 wt %) with MAPE system. Interestingly, the increased in tensile properties also resulted in improve in thermal and barrier properties. Differential scanning calorimeter analysis (DSC) revealed that the barrier property of nanocomposite was influenced by the crystalline percentage of nanocomposite. Along with crystalline percentage, the crystallization temperature, Tc and melting temperature, Tm were also improved with OMMT and MAPE agent. The d-spacings of the clay in nanocomposites were monitored using x-ray diffraction (XRD) and the extent of delamination was examined by transmission electron microscope (TEM). The wide angle of XRD patterns showed the increased interplanar spacing, d of clay layers, indicating enhanced compatibility between polymer matrix and OMMT with the aid of MAPE agent. TEM photomicrographs illustrated the mixed intercalated and partial exfoliated structures of the nanocomposites with OMMT and MAPE agent.

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“…The ∆H values were also increased as compared to the unfilled polymer matrix ( Table 1). Similar observations were also reported by previous researchers [16][17].…”

Section: Differential Scanning Calorimeter Analysis (Dsc)supporting

confidence: 93%

A Linear Relationship between the Mechanical, Thermal and Gas Barrier Properties of MAPE Modified Rubber Toughened Nanocomposites

Jamal¹

2010

IIUMEJ

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“…The ΔH values were also increased as compared to the unfilled polymer matrix (refer to Table 3). Similar observations were also reported by previous researchers [12][13][14]. The addition of OMMT at optimum level of 4 vol% increased the T m values for the whole nanocomposite system.…”

Section: Differential Scanning Calorimeter Analysis (Dsc)supporting

confidence: 91%

“…The addition of OMMT at optimum level of 4 vol% increased the T m values for the whole nanocomposite system. The increasing in T m values signifies that the crystal thickness in nanocomposites is more perfect than in polymer matrix [14]. Similar improvement pattern was observed for T c and X c values suggesting that the crystallization mechanism of neat polymer matrix was enhanced.…”

Section: Differential Scanning Calorimeter Analysis (Dsc)supporting

confidence: 68%

The Influence of EB-Irradiated Treatment on Enhancing Barrier Property and Crystallization Behavior of Rubber-Toughened Nanocomposites

Jamal

Anuar

Bahri

2011

Journal of Nanotechnology

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Electron beam (EB) irradiation technique was introduced to modify the crystallization and oxygen (O2) barrier properties of high density-polyethylene (HDPE)/ethylene propylene diene monomer (EPDM) matrix and HDPE/EPDM filled withorganophilic montmorillonite (OMMT). The absorbed dose for EB-irradiation was fixed at 100 kGy. HDPE/EPDM matrix and HDPE/EPDM filled with OMMT at 4 vol% loading were prepared via melt intercalation method. It was found that the barrier resistance of HDPE/EPDM filled withOMMT against oxygen (O2) transmission was significantly enhanced by EB-irradiation absorbed dose of 100 kGy as compared to the control system. The crystallization temperature,Tc, and melting temperature,Tm, were also improved with the addition of OMMT along with the aids of EB-irradiation technique. Field emission scanning electron microscope (FESEM) revealed that the stacking condition of OMMT particles was greatly reduced by EB-irradiation treatment as evidenced by finer surface and less formation of voids.

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“…Mechanical properties of their blends are controlled by their morphology to a great extent. For rubber toughened polymers, the shape, content, size, and size distribution of the dispersed‐phase particles have major effects on mechanical properties of polymer‐elastomer blends 10–23. Van der Wal et al24 have investigated the effect of the rubber particle size and rubber content on the fracture behavior of PP‐EPR blends.…”

Section: Introductionmentioning

confidence: 99%

Tensile behavior of polypropylene blended with bimodal distribution of styrene‐ethylene‐butadiene‐styrene particle size

Mae

Omiya

Kishimoto

2007

J of Applied Polymer Sci

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ABSTRACT:The objective is to characterize the effects of the bimodal distribution of rubber particles and its blend ratio on the mechanical properties of the thermoplastic polypropylene blended with two different styrene-ethylenebutadiene-styrene triblock copolymer at the intermediate and high strain rates. Tensile tests are conducted at the nominal strain rates from 3 3 10 21 to 10 2 (1/s). Phase morphology is investigated to estimate the bimodal rubber particle size distribution. In addition, the in situ observation is conducted during uniaxially stretching within transmission electron microscopy step by step to investigate the deformation events depending on the elongation of samples. The elastic modulus increased gradually as the blend ratio of large rubber particle increased. An increase in the rupture strain and the strain energy up to failure was found for the bimodal rubber particle distributed blend system where the blend ratios of small rubber particle and large rubber particle were same. This is because the smaller particles dominant blend systems show the bandlike craze deformation while the localized plastic deformation is taken place in the larger particles dominated blend systems. The synergistic effect of these rubber particles gives rise to a strong increase in the ductility of these bimodal rubber particle distributed polypropylene systems.

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Mechanical behaviour and fracture toughness evaluation of rubber toughened polypropylene nanocomposites

Cited by 21 publications

References 50 publications

A Linear Relationship between the Mechanical, Thermal and Gas Barrier Properties of MAPE Modified Rubber Toughened Nanocomposites

A Linear Relationship between the Mechanical, Thermal and Gas Barrier Properties of MAPE Modified Rubber Toughened Nanocomposites

The Influence of EB-Irradiated Treatment on Enhancing Barrier Property and Crystallization Behavior of Rubber-Toughened Nanocomposites

Tensile behavior of polypropylene blended with bimodal distribution of styrene‐ethylene‐butadiene‐styrene particle size

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