Instron Peel Strength Test

The tack can be measured by the Instron Peel Strength Test or the Tel-Tak test (27-29). Using a poly(vinyl alcohol) with an 1,2-diol as side chain with a specified saponification degree yields a coating solution with less gelation (26). 

Film-substrate interfacial adhesion strength was evaluated by a T-peel test at a peeling rate of 5 mm/min using an Instron 4466 universal testing machine. Grip distance was 23 mm. 

Samples for adhesion measurements were prepared in a separate chamber with a base pressure of 1 x 10 ° Torr under identical conditions. Typically, -1000 A silver coverages were used for adhesion measurements. Adhesion strength of the deposited Ag films was determined using a polyester adhesive tape and standard peel test procedures on an Instron tester. 

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