Characterization of Fluoropolymer Processing Aids. This program deals with chemicals utilized in the production of many fluoropolymer consumer goods and their environmental impact. Teflon® is an example of a family of products abundant in our market place and homes. The stability of these products is vital to their performance, however their processing is challenging without the use of processing aids. There is currently considerable interest in better characterizing these processing aids and evaluating their bio- and environmental impact. Widener students have been working with Professor Shirley Fischer-Drowos to collect fundamental physical property data. The group has had the opportunity to visit the DuPont Experimental Station, which has provided us with samples for characterization.
Wine Analysis. Sulfites are found in wines both naturally, as a resultant byproduct of fermentation, and also by addition at wineries to stabilize product color and flavor. The quantity of sulfites in wines must be analyzed and reported, since some consumers exhibit sulfite sensitivity. Currently a subjective Ripper test is utilized for this purpose. Professors Fischer-Drowos and Martin are working together with Widener students to develop a more accurate method for sulfite evaluation in wines.
Catalyst Evaluation. Several catalysts have been found to be successful in reducing the amount of ethylene in food storage areas. Ethylene reduction is vital, since it promotes food spoilage, resulting in decreased product shelf life. Professor Fischer-Drowos, in collaboration with several faculty members in the Chemical Engineering Department, is working with Widener students to determine the effectiveness of a variety of catalysts. This evaluation involves a photocatalytic reaction with subsequent gas sampling.