1998
DOI: 10.1177/0021955x9803400403
|View full text |Cite
|
Sign up to set email alerts
|

Solubilities of Nitrogen, Isobutane and Carbon Dioxide in Polyethylene

Abstract: This paper describes the use of a novel method for measuring gas solubilities in polymers. It involves the use of a magnetic suspension device, an instrument with good mass sensitivity and short equilibration times that is able to operate in relatively hostile conditions, At similar temperatures and pressures, isobutane was significantly more soluble in polyethylene than carbon dioxide. The solubilities of both gases increased as the pressure was raised and decreased with increasing temperatures. The effect of… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

2
11
0
1

Year Published

2001
2001
2019
2019

Publication Types

Select...
6
1
1

Relationship

0
8

Authors

Journals

citations
Cited by 30 publications
(14 citation statements)
references
References 16 publications
2
11
0
1
Order By: Relevance
“…The calculated solubilities, expressed as the mass of carbon dioxide dissolved in 100 g of empty polymer, are presented in Figure 11. The predicted values obtained with this model system correspond fairly well with experimental measurements of Sato et al [47] and of Chaudhary and Johns [48] on polyethylene. Another information that is very important to characterize is the volumetric behavior of the system.…”
Section: Solubility Of High Pressure Gases In Polymerssupporting
confidence: 87%
“…The calculated solubilities, expressed as the mass of carbon dioxide dissolved in 100 g of empty polymer, are presented in Figure 11. The predicted values obtained with this model system correspond fairly well with experimental measurements of Sato et al [47] and of Chaudhary and Johns [48] on polyethylene. Another information that is very important to characterize is the volumetric behavior of the system.…”
Section: Solubility Of High Pressure Gases In Polymerssupporting
confidence: 87%
“…A diffusion slightly faster is obtained for CO 2 compared to CH 4 . Such behaviour has been already reported in the literature with other polymers: polypropylene [63] and polystyrene [64], and has been interpreted on the basis of molecular structure considerations, attributing the faster diffusion to faster axial motions in case of linear molecules.…”
Section: Simulation Resultsmentioning
confidence: 87%
“…Several techniques like gravimetry [1][2][3][4], permeation cell [5,6] and NMR [7] have been adopted to measure solubility and diffusion coefficients. From a theoretical point of view, these two quantities are usually described and calculated through the concept of free volume [8][9][10], the dual-mode transport model [11][12][13][14], and molecular theories [15][16][17][18].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Some evolutions of this technique allow to perform measurements at a pressure of 12 MPa and a temperature up to 350°C with a resolution of 10 µg, for an initial weight of polymer sample of about 1 g [20,21]. By installing an electromagnetic coupling to transmit the sample weight to an external balance, it is possible to obtain a system called "magnetic suspension balance" [22]. By this method, a pressure of 45 MPa and a temperature of 250°C can be reached, for a weight of sample of 25 g, with a resolution of about 10 µg.…”
Section: Sorption-desorptionmentioning
confidence: 99%