Nitrogen/oxygen permeability of natural rubber, epoxidised natural rubber and natural rubber/epoxidised natural rubber blends

Johnson, T.; Thomas, Sabu

doi:10.1016/s0032-3861(98)00528-x

Cited by 72 publications

(54 citation statements)

References 16 publications

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“…MgO molecules adsorb high concentration of CO 2 even at low pressure and consequently enhanced the gas permeability [17]. TABLE (2) shows the selectivity coefficient of CO 2 to N 2 for all membranes calculated using equation (2). The selectivity coefficient of ENR/PVC membrane is higher than the membranes with fillers.…”

Section: Gas Permeation Propertiesmentioning

confidence: 99%

“…Polymers were being used as the primary membrane materials due to their advantages of good film forming, flexibility, toughness, separation properties and low costing [1]. According to Johnson and Thomas [2], membranes for gas separation processes need to meet several criteria, such as high permeability to the desired gas, high selectivity, the ability to form into useful membrane configurations and resistance to processing conditions. They also said that an ideal membrane requires high permeability (P) together with high selectivity ( ).…”

Section: Introductionmentioning

confidence: 99%

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Gas permeability of ENR/PVC membrane with the addition of inorganic fillers

Nor¹,

Abdullah²,

Othaman³

2013

AIP Conference Proceedings

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Abstract. Epoxidized natural rubber (ENR) was blended with polyvinyl chloride to form a flexible and porous membrane. SiO 2 and MgO were added into the membrane for pore formation and the effects of the addition was investigated by means of FTIR, TGA, SEM, EDX and gas permeability towards CO 2 and N 2 gases. FTIR result showed the presence of Si−O−Si asymmetric stretching at the absorption peak of 467 cm -1 for ENR/PVC/SiO 2 membrane and MgO signature peak at 3700 cm -1 for ENR/PVC/MgO membrane. Thermal analysis showed that the thermal stability of ENR/PVC membrane increased with the addition of fillers. Morphological studies prove that subsequently, the pores in the membranes increased showing that some of the added fillers were drawn towards the water leaving empty spaces and tracks. The remaining fillers are homogenously distributed on the surface of the membranes. CO 2 and N 2 gas permeability increased with increasing filler content and the permeability of ENR/PVC/SiO 2 membranes towards CO 2 and N 2 gasses was higher than ENR/PVC/MgO membranes.

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Section: Gas Permeation Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gas permeability of ENR/PVC membrane with the addition of inorganic fillers

Nor¹,

Abdullah²,

Othaman³

2013

AIP Conference Proceedings

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“…We combined atomic simulations with an approximate model to predict the gas permeability of an MMM composed of a zeolite (filler-1), a MOF (filler-2), and a polymer for the first time in the literature. [32] The approximate model was originally developed to describe the gas permeability in homogeneous and heterogeneous binary blends and copolymers: [54] log P blend 5/ 1 log P 1 1/ 2 log P 2 (14) In Eq. (14), P blend , P 1 , and P 2 are the gas permeabilities of the polymer blend, polymer-1, and polymer-2, respectively, and / 1 and / 2 represent the volume fractions of polymer-1 and polymer-2 in the blend.…”

Section: Modeling Mmms With Two Types Of Fillers: Mof/zeolite/polymermentioning

confidence: 99%

Computational Methods for MOF/Polymer Membranes

Eruçar

Keskin

2016

The Chemical Record

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Metal-organic framework (MOF)/polymer mixed matrix membranes (MMMs) have received significant interest in the last decade. MOFs are incorporated into polymers to make MMMs that exhibit improved gas permeability and selectivity compared with pure polymer membranes. The fundamental challenge in this area is to choose the appropriate MOF/polymer combinations for a gas separation of interest. Even if a single polymer is considered, there are thousands of MOFs that could potentially be used as fillers in MMMs. As a result, there has been a large demand for computational studies that can accurately predict the gas separation performance of MOF/polymer MMMs prior to experiments. We have developed computational approaches to assess gas separation potentials of MOF/polymer MMMs and used them to identify the most promising MOF/polymer pairs. In this Personal Account, we aim to provide a critical overview of current computational methods for modeling MOF/polymer MMMs. We give our perspective on the background, successes, and failures that led to developments in this area and discuss the opportunities and challenges of using computational methods for MOF/polymer MMMs.

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“…The studied polymers include polyisoprene and thermoplastic polymers such as polycarbonate, polystyrene and polyvinylchloride (Chen et al 2000;Dobre et al 2011;Nagasaki et al 1996;Rajabi et al 2013). Johnson and Thomas (1999) stated that the membrane for gas separation process needs to meet several criteria which are high permeability to the desired gas, high selectivity and resistance to processing conditions. However, the drawback in gas separation membrane research is the tradeoff limitation between gas permeability and selectivity (Robeson 2008(Robeson , 1991.…”

Section: Introductionmentioning

confidence: 99%

Effects of MgO Particle Loading on Gas Permeation Properties of Epoxidized Natural Rubber (ENR) / Polyvinyl Chloride (PVC) Membrane

Nor

Othaman²

2015

JSM

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A composite membrane was prepared by mixing epoxidized natural rubber (ENR) and polyvinyl chloride (PVC). An inorganic filler, MgO, was introduced into the polymer matrix by certain percentages to form a mixed matrix membrane (MMM Membran komposit telah disediakan dengan mencampurkan getah asli terepoksida (ENR) dengan polivinil klorida (PVC). Pengisi tak organik (MgO) telah dimasukkan ke dalam matriks polimer tersebut dengan peratusan tertentu untuk menghasilkan membran campuran matriks (MMM). Membran yang terhasil telah dicirikan dengan menggunakan FTIR

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Nitrogen/oxygen permeability of natural rubber, epoxidised natural rubber and natural rubber/epoxidised natural rubber blends

Cited by 72 publications

References 16 publications

Gas permeability of ENR/PVC membrane with the addition of inorganic fillers

Gas permeability of ENR/PVC membrane with the addition of inorganic fillers

Computational Methods for MOF/Polymer Membranes

Effects of MgO Particle Loading on Gas Permeation Properties of Epoxidized Natural Rubber (ENR) / Polyvinyl Chloride (PVC) Membrane

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