The glass-transition temperature (Tg) of redispersible polymer powders can vary depending on the specific polymer used. Redispersible polymer powders are typically made from a variety of polymers such as vinyl acetate ethylene (VAE), vinyl acetate versatate (VAE VeoVa), and ethylene vinyl acetate (EVA), among others.
The Tg of VAE-based redispersible polymer powders typically ranges from approximately -10°C to 10°C. The Tg of EVA-based redispersible polymer powders can vary widely depending on the specific EVA copolymer used, but is typically in the range of -50°C to 0°C.
It’s important to note that the Tg of redispersible polymer powders can affect their properties and performance in various applications, such as in cementitious systems, tile adhesives, and renders. Therefore, it’s important to consider the Tg of the specific polymer powder being used and how it may affect the intended application.