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Signaling Skin pH with Indicator Dyes
By: Katie Schaefer, Cosmetics & Toiletries magazine
Posted: January 3, 2011, from the January 2011 issue of Cosmetics & Toiletries.
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Mohr’s team developed the dyes in several steps to introduce various functionalities into both the dyes and the dressing. They also had to ensure the dyes were immobilized in the material in which they were bound.
“The dye must have specific chemical functions that allow it to bind to the polymer and the dressing material. It must not leach out,” Mohr explained.
The process of binding the polymer to the dye differs based on the polymer and dye used, which varies with application. This immobilization process, while proprietary, is a large part of Mohr’s current research.
“With synthesis, functions were introduced into the dye ... and dressing material to achieve stable linkage between the materials,” he said.
Mohr further stated that the indicator dyes are not designed for use in dressings for bleeding wounds because blood can stain the dyes. Rather, the dyes are designed for chronic wounds.