Experimental comparison of high-performance water vaporpermeation measurement methods
article
The requirement for evaluating high performance barrier layers with water vapor trans-mission rates (WVTR) far below 10-3g/m2d has been sparked by the growing applicationof flexible and organic electronics. While several highly sensitive WVTR-measurementtechniques are described in the literature, their accuracy and comparability has not yetbeen tested. There is an absence of direct comparison of these methods. With a growingbody of literature referring to different coating and barrier technologies (often under differ-ent testing conditions), it is extremely difficult to gather a coherent picture both of the per-formance of the materials studied and the permeation measurement methods used. Inorder to clarify these points we report on independent WVTR measurements of the samebatch of a high performance barrier film under two sets of conditions in several laborato-ries with different state-of the-art methods. These methods also include several calciumtest set-ups. The results showed that, while some differences are present, there is a remark-able level of agreement between the measurement methods even prior to harmonization.
TNO Identifier
868261
ISSN
15661199
Source
Organic Electronics, 15(12), pp. 3746-3755.
Publisher
Elsevier
Pages
3746-3755
Files
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