contact angle over exposure time the present disclosure will further be illustrated in the following non limiting working examples it being understood that these examples are intended to be illustrative only and that the disclosure is not intended to be limited to the materials conditions process parameters and the like recited herein all proportions are by weight unless otherwise indicated various polymeric substances were investigated in order to determine the extent of their interaction with metal specifically palladium materials were wrapped around a roll so that they were adjacent to the palladium the wrapping was maintained for 24 hours and the palladium surface was then tested for water contact angle wca samples of 12 to 18 inches long were aligned and stacked so that the edges were parallel to one another and the samples in direct physical contact with one another an additional sample was placed on top of the stack as a u201c cover sample u201d samples were handled with gloves and when transported were secured so that the samples stayed in physical contact with one another 4 drops 10 u03bcl each triton x 0 1 solution were placed across the web one drop about 0 25 inches from the datum side one drop about 0 25 inches from the smear side and the other two drops roughly equally spaced in the center 1 5 inches of the samples after 15 seconds the samples were evaluated for wetting the sample was trimmed to remove the tested area before restacking and sending the samples for wca measurement for wca measurement five drops were placed across the web a first drop about 0 25 inches from the datum side a second drop about 0 25 inches from.