Unlike most other applications, PMMA does not shatter. No, it shatters into big old nasty looking chunks. PMMA is find as it does not shatter but since PMMA is softer and can be scratched much easier than glass, while some are more scratch-resistant if coated with other materials.

Scratch Resistance: Acrylic is less scratch resistant than glass…

Lithe Solvent Immunity: Acrylic is not highly immune to a variety of solvents, such as acetone or alcohol….

Acrylic is prone to brittleness: Acrylic compared with some other plastics, for example shell can be relatively brittle.

As PMMA is insoluble in water, to ensure good dispersity of the PMMA particles within water an additional polymer which can achieve effective compatibilisation between the two must be employed

PMMA dictates biomedical applications, e.g., in blood pumps or as a dialyser [13], by its outstanding bio- and hemocompatibility along with the easy handling. Such optical properties suggest that this material would make it as an ideal choice for the use in implantable ocular lens and hard contact lenses.

Acrylic is a transparent thermoplastic often used as an alternative to glass and polycarbonate (PC); the material has been sold under several different names []. PMMA (i.e., acrylic glass) history is all the way to 1843 when acrylic acid was first isolated.

The specificity in the case of PMMA is a presence of an ester functional group (in particular, it belongs to methyl methacrylate), which results with great differentiation between macroscopic properties compared with PAA as i.a. high hydrostability against water concentration.