Detection of microbe contamination on elastomeric articles
View Patent ↗An elastomeric article that contains a chromogen that undergoes a detectable change in color in the presence of one or more microbes is provided. For example, in one embodiment, the chromogen is a solvatochromic dye (e.g., Reichardt's dye) that undergoes a color change in the presence of bacteria or other microbes. More specifically, such dyes may respond to differences in polarity between microbe components (e.g., cell membrane, cytoplasm, etc.) and the environment outside the cell. Alternatively, other mechanisms may be wholly or partially responsible for the interaction between the dye and the microbe, such as acid-base reactions, redox reactions, and so forth.
1. An elastomeric glove comprising:
an elastomeric material formed in the shape of a hand, the elastomeric material defining an inner donning surface and an outer gripping surface; and
an N-phenolate betaine dye that undergoes a detectable color change in the presence of one or more microbes.
2. The elastomeric glove of claim 1 , wherein the dye is contained within the elastomeric material.
3. The elastomeric glove of claim 1 , wherein the dye is present on an indicator strip, the indicator strip being adhered to the inner donning surface and/or the outer gripping surface of the elastomeric glove so that the dye is capable of being exposed to one or more microbes.
4. The elastomeric glove of claim 1 , wherein the dye is present on the outer gripping surface of the glove.
5. The elastomeric glove of claim 1 , wherein the dye is present on the inner donning surface of the glove.
6. The elastomeric glove of claim 1 , wherein the microbes are selected from the group consisting of bacteria, viruses, and fungi.
7. The elastomeric glove of claim 1 , wherein the dye is Reichardt's dye.
8. The elastomeric glove of claim 1 , wherein the dye is present in an amount of from about 0.001 wt. % to about 20 wt. % based on the dry weight of the elastomeric glove.
9. The elastomeric glove of claim 1 , wherein the dye is present in an amount of from about 0.01 wt. % to about 10 wt. % based on the dry weight of the elastomeric glove.
10. The elastomeric glove of claim 1 , wherein the color change occurs in less than about 5 minutes.
11. The elastomeric glove of claim 1 , wherein the color change occurs in less than about 1 minute.
12. The elastomeric glove of claim 1 , wherein the color change is reversible.