Direct measurement of gas solubilities in polymers with a high-pressure microbalance

摘要: Solubility and diffusion data are presented for methane carbon dioxide gases in high-density polyethylene. The polymer was cut from extruded piping intended use offshore oil gas applications. measurements were carried out with a high-pressure microbalance. properties determined 25 to 50°C 50 150 bar 20 40 dioxide. In general, good agreement obtained similar reported the literature. solubility followed Henry's law (linear) dependence pressure, except at high pressures methane, which negative deviations behavior observed. coefficients each of also measured balance, although uncertainty greater than measurements. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 91: 1476–1488, 2004