Interactions of chlorosulfonated polyethylene geomembranes with aliphatic esters: Sorption and diffusion phenomena

J of Applied Polymer Sci

2003

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ABSTRACT:The coefficients of sorption, diffusion, and permeation for five organic esters, three aldehydes, one cyclic ketone, and three substituted aromatic liquids have been calculated for tetrafluoroethylene/propylene copolymer membranes at 30, 40, and 50°C with the sorptiongravimetric technique. With the sorption data, the concentration-independent diffusion coefficients have been calculated from Fick's diffusion equation. Analytical solutions of Fick's equation under suitable boundary conditions have been obtained so that the liquid concentration profiles in the polymeric membranes at different times and different depths of liquid penetration could be computed. Because of the linearly increasing trend of the diffusion coefficients with temperature, efforts have been made to estimate Arrhenius parameters. Experimental values and the computed quantities have been used to determine the membrane-solvent interactions and to propose suitable applications for the membranes under investigation in various situations.

Section: Sorption Kineticsmentioning

confidence: 99%

Section: Sorption Kineticsmentioning

confidence: 99%

Section: Concentration Profilesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sorption, diffusion, and permeation of esters, aldehydes, ketones, and aromatic liquids into tetrafluoroethylene/propylene at 30, 40, and 50°c

Kulkarni

J of Applied Polymer Sci

2003

Self Cite

“…The values of K represent the extent of interactions between the penetrants and the geomembrane. [11][12][13][14][15][16][17] The dimensional response of the network PP geomembrane has been studied from a calculation of the change in volume of the geomembrane due to swelling. The values of K show a systematic increase with increasing temperature.…”

Section: Resultsmentioning

confidence: 99%

Sorption/desorption studies on polypropylene geomembrane in the presence of hazardous organic liquids

Naik

1999

J. Appl. Polym. Sci.

Experimental results of sorption/desorption obtained from a gravimetric method are presented for a polypropylene geomembrane with various organic liquids at 25, 50, and 70°C. The sorption data have been fitted to an Arrhenius relationship to obtain the heat of sorption. The sorption/desorption data have been analyzed using an empirical equation. The swelling of the PP geomembrane has also been studied for the chosen liquids. Experimental results and the derived quantities have been discussed to study the chemical resistivity of the geomembrane.

Sorption/desorption studies on polypropylene geomembrane in the presence of hazardous organic liquids

Naik

1999

J. Appl. Polym. Sci.

ABSTRACT:Experimental results of sorption/desorption obtained from a gravimetric method are presented for a polypropylene geomembrane with various organic liquids at 25, 50, and 70°C. The sorption data have been fitted to an Arrhenius relationship to obtain the heat of sorption. The sorption/desorption data have been analyzed using an empirical equation. The swelling of the PP geomembrane has also been studied for the chosen liquids. Experimental results and the derived quantities have been discussed to study the chemical resistivity of the geomembrane.