Abstract
Optical birefringence is usually linked to molecular orientation in polymers. Birefringence in materials used for optical applications represents non-isotropic optical properties, and is therefore undesired, but cannot always be avoided. Molecular orientation was found to be possible without necessarily resulting in birefringence. This effect is achieved by combining suitable amounts of PMMA and poly(vinylidene fluoride) PVDF in the form of a compatible, amorphous blend. The observed drastic reduction in birefringence is the result of the compensation of positive and negative contributions to the overall birefringence.
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