What is PMMI?

 

 

PMMI is an abbreviation for Poly(Methyl Methacrylate Isomers), generally referring to a polymer material similar to common polymethyl methacrylate (PMMA, also known as acrylic or plexiglass), but containing different isomers in its molecular structure. PMMI's physical and optical properties are similar to PMMA, but it can have a higher glass transition temperature (Tg), providing better thermal and dimensional stability.

 

In optical lens applications, a higher glass transition temperature means the material can maintain morphological and dimensional stability over a wider temperature range, which is crucial for certain optical systems that need to operate at high temperatures. Furthermore, like PMMA, PMMI can offer high light transmittance and low dispersion, making it suitable for manufacturing lenses, optical windows, optical fibers, and other visually transparent components.

 

However, note that PMMI may not be a very common term or a widely used material, so in practical applications, when referring to PMMI, it may be necessary to pay close attention to the specific performance and application recommendations provided by the material supplier.

What is PMMI?