Rubber-Solvent Interactions

Aminabhavi, Tejraj M.; Harogoppad, Shivaputrappa B.; Khinnavar, R. S.; Balundgi, R. H.

doi:10.1080/15321799108021958

Cited by 34 publications

(49 citation statements)

References 80 publications

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“…[1][2][3][4][5] Particularly, such a study is valuable in membrane-based separation processes like reverse osmosis, 6 pervaporation, 7 and ultrafiltration. 8 These processes depend ultimately on the type of membranes used in a particular application to act as a barrier under specified experimental conditions such as temperature and pressure.…”

Section: Introductionmentioning

confidence: 99%

Molecular transport of esters, aldehydes, aromatic liquids, and a ketone into fluoroelastomer membrane at 30, 40, and 50°C

Kulkarni

Aminabhavi

2003

J of Applied Polymer Sci

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Molecular transport of esters, aldehydes, substituted aromatic liquids, and a ketone through a fluoroelastomer (FC-2120) membrane sample was studied at 30, 40, and 50 o C. Sorption results were obtained by using a gravimetric method and concentration-independent diffusion coefficients were calculated using Fick's diffusion equation. Permeability coefficients were calculated from sorption and diffusion data. Concentration profiles of the liquid penetrants were calculated by solving the Fick's equation under appropriate initial and boundary conditions and these plots are displayed to show the variations in liquid concentrations with reference to the nature of liquids chosen, membrane thickness, as well as the time of polymer immersion in the liquids. Arrhenius activation parameters were also estimated from a temperature dependence of diffusion and sorption coefficients.

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Section: Introductionmentioning

confidence: 99%

Molecular transport of esters, aldehydes, aromatic liquids, and a ketone into fluoroelastomer membrane at 30, 40, and 50°C

Kulkarni

Aminabhavi

2003

J of Applied Polymer Sci

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“…rubber technology. [27][28][29][30] In our research we have studied blends having a high content of low molecular weight poly(ethylene glycol)s (LMWPEG) of different molecular weights and nature of end groups. Fast changes in blend structure were induced by heating to 90°C, the temperature exceeding possible application range, while measuring the gas transport properties of an about 100µm thick film of the material.…”

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confidence: 99%

Stability of blended polymeric materials for CO2 separation

Lillepärg

Georgopanos

Shishatskiy

2014

Journal of Membrane Science

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Abstract:Blend materials of Pebax ® 1657 and low molecular weight poly(ethylene glycol)s were studied for their stability at temperature up to 90°C. It was found that a threshold of molecular weight exists at which leaching out of the low molecular weight compound from the polymer matrix becomes minimal. Poly(ethylene glycol) with methyl end groups having a molecular weight of 500 g/mol provides a blend material with a CO 2 permeability coefficient higher than in case of Polyactive™. PEBAX ® /DM500 blend can be a cheaper alternative to tailor made Polyactive™ in large scale production of thin film composite membrane.

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“…That negative slope value reflects the higher affinity of the apolar polymer towards the least polar solvents, as one could expect. Other calculations made on analogous systems (synthetic rubbers) 27 confirm that the sorption can be described by the same type of relationship where b is always a negative value.…”

Section: Polar Polymer/apolar Liquid Systemsmentioning

confidence: 50%

Use of empirical polarity parameters to describe polymer/liquid interactions: Correlation of polymer swelling with solvent polarity in binary and ternary systems

Jonquières

Roizard

Lochon

1994

J of Applied Polymer Sci

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SYNOPSIS Dimroth and Reichardt polarity parameters E~( 3 0 )have been used, in a new approach, to quantitatively describe the swelling features due to polymer liquid interactions in binary and ternary systems. With the help of a polyurethaneimide (PUI) synthesized from polytetramethyleneglycol 650, sorption of pure liquids was first examined, and it was shown that a linear relationship between the molar swelling G, and the ET(30) values well fits the experimental data of each of the two series studied, i.e., aliphatic alcohols and linear ethers: G, = a + b ET(30). The slope value b, regarded as the sensitivity of the polymer to the liquid polarity, is 3 times higher for the aprotic series. The proposed correlation was further proved valid from the study of published results concerning nine binary systems polymer-liquid, whatever the polarity of the liquids in a given family (alcohols, esters, ketones, hydrocarbons) and the nature of the polymer. Finally, that method was tested on two types of PUI-alcohol-ether ternary systems, and it was found for each case that the partial molar swelling due to an homologous set of solvents can also be described by a similar law.

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Rubber-Solvent Interactions

Cited by 34 publications

References 80 publications

Molecular transport of esters, aldehydes, aromatic liquids, and a ketone into fluoroelastomer membrane at 30, 40, and 50°C

Molecular transport of esters, aldehydes, aromatic liquids, and a ketone into fluoroelastomer membrane at 30, 40, and 50°C

Stability of blended polymeric materials for CO2 separation

Use of empirical polarity parameters to describe polymer/liquid interactions: Correlation of polymer swelling with solvent polarity in binary and ternary systems

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