Yes, you can sublimate 50 percent polyester/50 percent cotton fabric. Keep in mind, however, that only 50 percent of the sublimation dyes will remain in the fabric after washing – leaving you with a faded look that most of us would consider unacceptable.
If this is the look that your customer is wanting, then go for it. If you’re looking for all the vivid colors and crisp detail that sublimation provides, look for 100 percent polyester shirts that are certified for sublimation. For example, we recommend Vapor Apparel. RE: A&E Newsletter Content
-David Gross, Condé