Document Detail


Determination of Carbon Dioxide Transport Coefficients in Liquids and Polymers by NMR Spectroscopy.
MedLine Citation:
PMID:  22537229     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In liquids and in polymeric membranes, a precise determination of their transport properties is of paramount importance. In this work, a NMR method to measure sequentially the solubility and diffusion coefficients of carbon dioxide in liquids (n-alkanes and 1-alkanols) and in polymer membranes (polyethylene, polybutadiene and polycarbonate) is described. The results show that NMR measurements are very reproducible and in good agreement with those determined by other methods. Considering that the gas permeability is defined as the product of the solubility and diffusion coefficients, the method allows the determination of all transport parameters in an accurate manner. The influence of chain length, viscosity and solubility parameters on the transport coefficients of [<sup>13</sup>C]O<sub>2</sub> in alkanes and 1-alkanols was also analyzed and compared to those measured in polyethylene.
Authors:
Julio Guzman; Leoncio- Garrido
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-26
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  -     ISSN:  1520-5207     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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