Waste newsprint fibers for reinforcement of radiation-cured styrene butadiene rubber-based composites - Part I: Mechanical and physical properties

Ali, Magdy A. M.; El‐Nemr, Khaled F.; Hassan, Medhat M.

doi:10.1177/0731684411407949

Cited by 22 publications

(14 citation statements)

References 14 publications

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“…rHDPE reinforced with 40% of rNP compared to the plain rHDPE stated for 24% higher modulus of elasticity, while the composite based on rPE HD/LD revealed for 86% higher modulus compared to plain rPE HD/LD. Such results were however expected, since rNP possesses had higher stiffness compared to the neat polymer.These findings are also in accordance with other studies investigating the influence of newsprint fibres as a reinforcing agent[5,10,11]. On the other hand, elongation at break was significantly affected by fibre content in both materials, since composites become…”

supporting

confidence: 92%

Mechanical and Thermal Properties of Recycled Mixed Waste Polymers Reinforced with Reclaimed Newsprint Fibres

Fajs¹,

Bogataj²,

Omahen³

et al. 2019

JESE-A

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This study investigates the mechanical, thermal and morphological properties of rHDPE (Recycled High Density Polyethylene) and a mixture of rPE HD/LD (High and Low Density Polyethylene), both reinforced with rNP (Reclaimed Newsprint Paper) fibres. To enhance the composite properties, the addition of highly grafted maleic anhydride polyethylene wax, as CA (Coupling Agent), and semi crystalline copolymer of propylene and ethylene, as IM (Impact Modifier), was included into the material formulation by a twin-screw extruder. Mechanical and morphological properties were studied on tensile test specimens, prepared by injection moulding, by tensile testing machine and SEM (Scanning Electron Microscope), respectively. Thermal properties, i.e. melting and crystallization behaviour, were investigated by DSC (Differential Scanning Calorimetry). Mechanical analysis showed that the addition of rNP in both composites increased the young modulus and significantly decreased the elongation at break. The DSC results revealed that the addition of the rNP in the rHDPE matrix led to a substantial decrease of crystallinity, which consequently affects the tensile strength of the composite (17 MPa) in contrast to the neat rHDPE (25 MPa). On the contrary, fibre addition in rPE HD/LD matrix had no specific impact on the crystallinity index, but did contribute to the increased tensile strength (26 MPa) when compared with neat rPE HD/LD (16 MPa). SEM photomicrographs of the impact fracture surfaces demonstrated a solid adhesion bond between the natural fibres and the rPE HD/LD matrix. Reclaimed newsprint fibres can thus be considered as a perspective alternative to the inorganic fillers in the rPE HD/LD composite.

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confidence: 92%

Mechanical and Thermal Properties of Recycled Mixed Waste Polymers Reinforced with Reclaimed Newsprint Fibres

Fajs¹,

Bogataj²,

Omahen³

et al. 2019

JESE-A

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“…The volume fraction of rubber in a swollen rubber gel (V r ) was calculated according to the following equation 13 :…”

Section: Volume Fraction Of Rubber In Swollen Gelmentioning

confidence: 99%

Effect of gamma radiation on physico-mechanical properties of vulcanized natural rubber/carbon fiber composites

Hassan

El‐Nemr

El-Megeed

2016

Journal of Elastomers & Plastics

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Natural rubber was reinforced with a short carbon fibers (SCFs) at different concentrations (0-20 part per hundred part of rubber (phr)). The composites were vulcanized by sulfur, then subjected to gamma radiation at different doses up to 40 kGy. Physico-mechanical properties of composites were studied. Also, thermogravimetric analysis was used to investigate the influence of the incorporation of SCF on the thermal properties of prepared composites. It was observed that the mechanical properties like tensile strength increases with increasing irradiation dose up to 30 kGy and fiber loading up to 15 phr, meanwhile the hardness and modulus increase with increasing fiber loading, but not affected by irradiation dose. Thermal stability of composites was increased by fiber loading content at constant irradiation dose. The morphological studies were made by means of scanning electron microscopy to investigate the structure change caused by the incorporation of SCF.

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“…While incinerating the composites produces energy recovery, it only results in a portion of the energy needed to produce the GF and the matrix. However, using GF results in wear of the preparation and manufacturing equipment (Ali et al 2011;Nedjma et al 2013). On the other hand, the use of natural fibers as reinforcements ensures the conservation of more environmental friendly materials, referred to as green composites.…”

Section: Introductionmentioning

confidence: 99%

Tensile Properties of Polypropylene Composites Reinforced with Mechanical, Thermomechanical, and Chemi-Thermomechanical Pulps from Orange Pruning

Reixach¹,

Espinach²,

Arbat³

et al. 2015

BioResources

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This paper explores the evolution in the tensile strength of orange pruning fiber-reinforced polypropylene composites. The exploitation of these pruning's can effectively avoid incineration, with the consequence of CO2 emissions and fire risk, while extending the value chain of the agricultural industry. This biomass was subjected to three different treatments yielding mechanical, thermomechanical, and chemi-thermomechanical pulps. It was found that 20 to 50% of these pulps, together with a coupling agent, were used as polypropylene reinforcement. The evolution in the tensile strength and morphological properties of the fibers, and the effect of treatments on these properties were analyzed. A modified rule of mixtures (mROM) was used to analyze the micromechanical properties of the interface. In addition, the mechanical properties were weighted against the fiber treatment yields. Finally, factors to compute the net contribution of the fibers to the final strength of the composite materials were proposed.

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Waste newsprint fibers for reinforcement of radiation-cured styrene butadiene rubber-based composites - Part I: Mechanical and physical properties

Cited by 22 publications

References 14 publications

Mechanical and Thermal Properties of Recycled Mixed Waste Polymers Reinforced with Reclaimed Newsprint Fibres

Mechanical and Thermal Properties of Recycled Mixed Waste Polymers Reinforced with Reclaimed Newsprint Fibres

Effect of gamma radiation on physico-mechanical properties of vulcanized natural rubber/carbon fiber composites

Tensile Properties of Polypropylene Composites Reinforced with Mechanical, Thermomechanical, and Chemi-Thermomechanical Pulps from Orange Pruning

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