• Contact angle hysteresis might possibly show a correlation to
stain concentration or to staining on non-horizontal surfaces.
• As contact angle spread rate is kinetically driven, it may be
important to determine if a correlation exists between this
and stain repellency at time intervals.
• For stain repellent material development work, dispersion
of the additive throughout the film and on the film surface
would be important to determine the efficacy of the stain
repellent agents and any correlation between their film locations and stain repellency properties.
• HSP values of surfaces and staining agents should be studied
to determine how this affects stain repellency. CW
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Acknowledgements
Many people contributed to the work in this study and paper
and I would like to extend a heartfelt thank you to all of them:
• Wacker Chemical Corporation in Adrian, MI - Lucas Madison,
Matthew Luethold, Donald Stephens, and Rick Coffey prepared paint samples, drawdowns and performed stain testing
and data collection; Amanda Andrews, Jerry Havens, Andrew
Pearson, and Jim Greene for technical discussions; Mark
Westfall and Jim Greene for editing the manuscript.
• Wacker Chemie AG, in Burghausen, Germany - Dr. Stefan
Altmann and Stefan Diwisch for contact angle measurements and surface energy data.
• The University of Southern Mississippi - Dr. Sarah Morgan
for supplying technical articles and information.
• The Waterborne Symposium and The University of Southern
Mississippi for allowing me to publish and present this work
after the 43rd Annual Waterborne Symposium.
• The American Coatings Show for allowing me to publish
and present this work at ACS 2016.
