Barrier Properties of Thermoplastic Polyurethane Film for Bladders and Other Containment Applications

摘要

Gas transport properties of various thermoplastic Polyurethane (TPU) films are presented as a function of gauge, temperature and humidity. Influence of the TPU's chemical constitution on the transport characteristics is discussed. Empirical data for the different gases and comparison to other soft elastic polymers permit rules of thumb for the selection of appropriate TPU grades for various applications.