The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Hanafi Ismail - One of the best experts on this subject based on the ideXlab platform.
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Hardness and Swelling Behaviour of epoxidized natural rubber/recycled acrylonitrile-butadiene rubber (ENR 50/NBRr) blends
2017Co-Authors: Hazwani Syaza Ahmad, Hanafi Ismail, Azura A. RashidAbstract:This recent work is to investigate the hardness and Swelling Behaviour of epoxidized natural rubber/recycled acrylonitrile-butadiene rubber (ENR 50/NBRr) blends. ENR 50/NBRr blends were prepared by two-roll mills with five different loading of NBRr from 5 to 35 phr. Results indicated that the hardness of ENR 50/NBRr blends increased as recycled NBR increased due to the improvement in crosslink density of the blends. Increasing NBRr content gives ENR 50/NBRr blends better resistance towards Swelling. Higher degree of crosslinking will increase the Swelling resistance and reduce the penetration of toluene into the blends. The presence of polar group in ENR 50 and NBRr give better hardness properties and Swelling Behaviour of the ENR 50/NBRr blends compared to the NR/NBRr blends.
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The Effects of Partial Replacement of Virgin Polyethylene (vPE) with Recycled Polyethylene (rPE) in vPE/rPE/Ethylene Propylene Diene Terpolymer (EPDM) Blends: Thermal Properties and Swelling Behaviour
Applied Mechanics and Materials, 2015Co-Authors: Hanafi Ismail, H.w. Woon, N. Z. Noriman, Sung Ting Sam, N.z. Nik YahyaAbstract:Studies on the thermoplastic elastomers (TPEs) had been extensively done. The incorporation of recycled materials into the TPEs formulation had been analysed, particularly involving recycled plastic due to its properties. The effects of partial replacement of virgin polyethylene (vPE) with recycled polyethylene (rPE) on the thermal properties and Swelling Behaviour of vPE/rPE/EPDM blends were studied. The discarded polyethylene used in the study was obtained from local wire insulation industry. The thermal properties and Swelling Behaviour of the blends were analyzed. Results show that increasing of sulfur loading had improved the thermal stability of the blends. The Swelling percentage and Swelling index of vPE/rPE/EPDM blends also decreased, inversely proportional to the increasing of sulfur loading. Thus, the increased incorporation of sulfur loading had improved the chemical and oil resistance of the blends.
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Fatigue, Resilience, Hardness, and Swelling Behaviour of Natural Rubber/Recycled Acrylonitrile-Butadiene Rubber (Nr/Nbrr) Blends:
Polymers and Polymer Composites, 2015Co-Authors: Hanafi Ismail, Hazwani Syaza Ahmad, Azura A. RashidAbstract:In the present study, the fatigue, resilience, hardness, and Swelling Behaviour of natural rubber and recycled acrylonitrile-butadiene rubber (NR/NBRr) blends were studied in the concentration rang...
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The Effects of Dynamic Vulcanization in Virgin Polyethylene (vPE)/Recycled Polyethylene (rPE)/Ethylene Propylene Diene Terpolymer (EPDM) Blends: Thermal Properties and Swelling Behaviour
Advanced Materials Research, 2013Co-Authors: Hanafi Ismail, H.w. Woon, N.z. Noimam, N.z. Nik YahyaAbstract:The effects of dynamic vulcanization on the thermal properties and Swelling Behaviour of vPE/rPE/EPDM blends were studied. The discarded polyethylene used in the study was obtained from local wire insulation industry. The thermal properties and Swelling Behaviour of the blends were analyzed. Results show that increasing of sulfur loading had improved the thermal stability of the blends. The Swelling percentage and Swelling index of vPE/rPE/EPDM blends also decreased, inversely proportional to the increasing of sulfur loading. Thus, the increased incorporation of sulfur loading had improved the chemical and oil resistance of the blends.
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cure characteristics tensile properties and Swelling Behaviour of recycled rubber powder filled natural rubber compounds
Polymer Testing, 2002Co-Authors: Hanafi Ismail, Razif Nordin, Ahmad Md NoorAbstract:The effect of recycled rubber powder (RRP) on cure characteristics, tensile properties and Swelling Behaviour of natural rubber (NR) compounds was investigated in the concentration range of 0 to 50 phr. Results indicate that the minimum torque and Mooney viscosity of the natural rubber compounds increase with increasing RRP loading whereas the scorch time and cure time exhibit a decreasing trend. Increasing RRP loading also gives natural rubber compounds better resistance towards Swelling and reduces the elongation at break but the tensile stress, M100 (stress at 100% elongation) and M300 (stress at 300% elongation), increases slightly. However, the tensile strength increases up to 10 phr of RRP and then decreases.
A Asroun - One of the best experts on this subject based on the ideXlab platform.
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effects of scrap tyre rubber fibre on Swelling Behaviour of two clayey soils in algeria
Geosynthetics International, 2012Co-Authors: H Trouzine, M Bekhiti, A AsrounAbstract:ABSTRACT: An experimental programme was undertaken to investigate the effect of scrap tyre rubber on the Swelling Behaviour of composite clayey soils, using a large mix ratio. Two soils were studied (Ayaida and bentonite soils in the north-west of Algeria) by considering the high compressibility and low water absorption of scrap tyre rubber. Grain size, specific gravity, Atterberg limit analysis, swell-consolidation and loading–unloading tests were performed on the two soils and their mixtures with varying fibre content (10%, 20%, 25% and 50%). The results show that the liquid limits, swell potentials, Swelling pressure and time to reach maximum heave decrease gradually when the scrap rubber content increases, and this reduction is significant for the soil with the higher Swelling potential. Owing to the high compressibility of scrap tyre rubber, the compression and recompression indexes increase considerably with the content of scrap tyre rubber. It appears from the results that scrap tyre rubber can be ...
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Effects of scrap tyre rubber fibre on Swelling Behaviour of two clayey soils in Algeria
Geosynthetics International, 2012Co-Authors: H Trouzine, M Bekhiti, A AsrounAbstract:ABSTRACT: An experimental programme was undertaken to investigate the effect of scrap tyre rubber on the Swelling Behaviour of composite clayey soils, using a large mix ratio. Two soils were studie...
Larisa A. Bimendina - One of the best experts on this subject based on the ideXlab platform.
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Swelling Behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) gel in a linear poly(acrylic acid) solution
Macromolecular Chemistry and Physics, 1999Co-Authors: Esen A. Bekturov, Vera A. Frolova, Larisa A. BimendinaAbstract:The Swelling Behaviour of a non-ionic poly(N-vinyl-2-pyrrolidone) hydrogel in a linear poly(acrylic acid) solution upon the influence of chain length, pH, ionic strength, and water/dimethyl sulfoxide composition was studied. The sharp shrinkage of the gel volume within a narrow range of polyacid concentration takes place as a result of the formation of an intermacromolecular gel-polymer complex on the base of hydrogen bonding. According to X-ray diffraction this complex is amorphous. The formation of the gel-polymer complex is a long term process and the system reaches equilibrium within 48 h. The Swelling Behaviour strongly depends on the chain length of the polyacid whereas it does not depend on the ionic strength. With increasing pH value and changing water/dimethyl sulfoxide composition the gel reSwelling is induced. The complex formation with poly(acrylic acid) occurs in the same way for linear and crosslinked poly(N-vinyl-2-pyrrolidone).
N.z. Nik Yahya - One of the best experts on this subject based on the ideXlab platform.
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The Effects of Partial Replacement of Virgin Polyethylene (vPE) with Recycled Polyethylene (rPE) in vPE/rPE/Ethylene Propylene Diene Terpolymer (EPDM) Blends: Thermal Properties and Swelling Behaviour
Applied Mechanics and Materials, 2015Co-Authors: Hanafi Ismail, H.w. Woon, N. Z. Noriman, Sung Ting Sam, N.z. Nik YahyaAbstract:Studies on the thermoplastic elastomers (TPEs) had been extensively done. The incorporation of recycled materials into the TPEs formulation had been analysed, particularly involving recycled plastic due to its properties. The effects of partial replacement of virgin polyethylene (vPE) with recycled polyethylene (rPE) on the thermal properties and Swelling Behaviour of vPE/rPE/EPDM blends were studied. The discarded polyethylene used in the study was obtained from local wire insulation industry. The thermal properties and Swelling Behaviour of the blends were analyzed. Results show that increasing of sulfur loading had improved the thermal stability of the blends. The Swelling percentage and Swelling index of vPE/rPE/EPDM blends also decreased, inversely proportional to the increasing of sulfur loading. Thus, the increased incorporation of sulfur loading had improved the chemical and oil resistance of the blends.
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The Effects of Dynamic Vulcanization in Virgin Polyethylene (vPE)/Recycled Polyethylene (rPE)/Ethylene Propylene Diene Terpolymer (EPDM) Blends: Thermal Properties and Swelling Behaviour
Advanced Materials Research, 2013Co-Authors: Hanafi Ismail, H.w. Woon, N.z. Noimam, N.z. Nik YahyaAbstract:The effects of dynamic vulcanization on the thermal properties and Swelling Behaviour of vPE/rPE/EPDM blends were studied. The discarded polyethylene used in the study was obtained from local wire insulation industry. The thermal properties and Swelling Behaviour of the blends were analyzed. Results show that increasing of sulfur loading had improved the thermal stability of the blends. The Swelling percentage and Swelling index of vPE/rPE/EPDM blends also decreased, inversely proportional to the increasing of sulfur loading. Thus, the increased incorporation of sulfur loading had improved the chemical and oil resistance of the blends.
Gholam Bagheri Marandi - One of the best experts on this subject based on the ideXlab platform.
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effect of hydrophobic monomer on the synthesis and Swelling Behaviour of a collagen graft poly acrylic acid co sodium acrylate hydrogel
Polymer International, 2009Co-Authors: Gholam Bagheri Marandi, Safoura Hariri, Gholam Reza MahdaviniaAbstract:BACKGROUND: Graft polymerization of vinylic monomers onto natural backbones is an efficient approach for the synthesis of natural-based superabsorbents. The nature of the monomers will affect the Swelling Behaviour of the superabsorbents. Here, a novel superabsorbent was synthesized through grafting of acrylic acid onto collagen in the presence of hydrophobic styrene as co-monomer. Subsequently, the effect of styrene on the Swelling Behaviour of the superabsorbent was studied. RESULTS: The highly Swelling superabsorbent was prepared by introducing styrene into a collagen-graft-poly(acrylic acid) hydrogel. By inclusion of styrene monomer, the Swelling capacity of the hydrogel was increased; this is discussed according to the network composition. The effect of Swelling media (salt solutions and various pH values) was investigated. The results of absorbency under load showed that hydrogels containing phenyl groups exhibit better Behaviour; however, by introducing styrene, the rate of water uptake and resistance to water holding under heating was reduced. Scanning electron micrographs of hydrogels revealed a decrease in porosity on using styrene. CONCLUSION: Inclusion of styrene monomer in the ionic superabsorbent caused high Swelling capacity with better absorbency under load. This can be used to prepare highly Swelling superabsorbents with good mechanical properties. The pH reversibility of the synthesized superabsorbent makes it a candidate for use in the controlled release of drugs and in agrochemicals. Copyright © 2008 Society of Chemical Industry
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Effect of hydrophobic monomer on the synthesis and Swelling Behaviour of a collagen‐graft‐poly[(acrylic acid)‐co‐(sodium acrylate)] hydrogel
Polymer International, 2009Co-Authors: Gholam Bagheri Marandi, Safoura Hariri, Gholam Reza MahdaviniaAbstract:BACKGROUND: Graft polymerization of vinylic monomers onto natural backbones is an efficient approach for the synthesis of natural-based superabsorbents. The nature of the monomers will affect the Swelling Behaviour of the superabsorbents. Here, a novel superabsorbent was synthesized through grafting of acrylic acid onto collagen in the presence of hydrophobic styrene as co-monomer. Subsequently, the effect of styrene on the Swelling Behaviour of the superabsorbent was studied. RESULTS: The highly Swelling superabsorbent was prepared by introducing styrene into a collagen-graft-poly(acrylic acid) hydrogel. By inclusion of styrene monomer, the Swelling capacity of the hydrogel was increased; this is discussed according to the network composition. The effect of Swelling media (salt solutions and various pH values) was investigated. The results of absorbency under load showed that hydrogels containing phenyl groups exhibit better Behaviour; however, by introducing styrene, the rate of water uptake and resistance to water holding under heating was reduced. Scanning electron micrographs of hydrogels revealed a decrease in porosity on using styrene. CONCLUSION: Inclusion of styrene monomer in the ionic superabsorbent caused high Swelling capacity with better absorbency under load. This can be used to prepare highly Swelling superabsorbents with good mechanical properties. The pH reversibility of the synthesized superabsorbent makes it a candidate for use in the controlled release of drugs and in agrochemicals. Copyright © 2008 Society of Chemical Industry
