Thin layer of polymeric
material that acts as a barrier permitting mass transport of selected species.
PAC, 2004, 76, 889
(Definitions of terms relating to reactions of polymers and to functional polymeric
materials (IUPAC Recommendations 2003))
on page 902
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook