Silicone rubber ( PDMS) is a polymer with preferential absorption for volatile organic compounds, such as alcohols, ester, phenol, aromatic, hydrocarbon, ketone, halogenation, pyridine, from their water solutions. 硅橡胶(PDMS)膜对醇、酯、酚、酮、卤代物、芳香烃、吡啶等有机物小分子物质有良好的吸附选择性。