red53560 Posted September 21, 2017 Share Posted September 21, 2017 I am using a barrier film that has an EVOH layer in the middle and I am looking for ways to test that the layer is actually there. The EVOH reacts with iodine so I can cut a sample die it then look at the cross section under a microscope but this is tedious and was wondering if anybody had any other suggestions. I do have some lab equipment but no NMR (I wish ). Any thoughts? Thanks? Link to comment Share on other sites More sharing options...
John Cuthber Posted September 21, 2017 Share Posted September 21, 2017 What other materials are present? Link to comment Share on other sites More sharing options...
red53560 Posted September 25, 2017 Author Share Posted September 25, 2017 Ethylene-vinyl acetate, polybutene-1 and linear low density polyethylene I believe there is also some other type of adhesive in between the EVOH layer and the EVA,LLDPE,PB layer but I don't know what it is. Link to comment Share on other sites More sharing options...
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