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Erschienen in:
1999 | OriginalPaper | Buchkapitel
Water Vapor Permeability
verfasst von : Dr. Harro Träubel
Erschienen in: New Materials Permeable to Water Vapor
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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Materials which are able to take in or let out moisture either need to be porous or selectively permeable. Membranes are products which are permeable to low molecular weight products or ions. In this work we will discuss mainly microporous or hydrophilic films, coatings and impregnations, i.e. materials permeable to water vapor. As will be seen later (Chap. 27) spin off materials, which were most probably originally designed as substitutes for leather, can be used for other purposes like filters, wound covers, slow release materials, etc. In general, all these kind of material are membranes — allowing defined products to permeate a barrier between an inside and an outside part of a technical product that they cover, include or contain.