What are the optical properties of some polymers? Some polymers form semi-crystalline structures that produce the dispersion of light that passes ...

Some polymers have different optical properties depending on their molecular structure. Semi-crystalline polymers, as you mentioned, have a regular arrangement of polymer chains in certain regions, which can scatter or disperse light passing through them. This scattering of light makes the material appear opaque. Examples of semi-crystalline polymers include polyethylene (PE) and polypropylene (PP). On the other hand, amorphous polymers lack a regular arrangement of polymer chains and have a more random molecular structure. This allows light to pass through them without significant scattering, making them transparent or translucent. Examples of amorphous polymers include polystyrene (PS) and polymethyl methacrylate (PMMA). It's important to note that the optical properties of polymers can also be influenced by factors such as additives, fillers, and processing conditions.