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Are polymer plastics isotropic?



Most polymer plastics are inherently isotropic (that is, that is they have no directionality in their optical properties).   However, when formed in the injection molding process the polymer is melted, injected and cooled, which depending on the material can induce stress that shows up as birefringence in the finished molded part.

Questions on OKP and polymer plastics can be directed to Kelly Barker at KBarker@focenter.com


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  Answered by AskFOC Technical Team July 3, 2018


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Kathleen Skelton, as FOC's Director of Strategic Marketing, utilizes her expertise in business development, online strategy, market planning, digital best practices, standard operating procedure development, and content management. A graduate of Curry College, she holds degrees in Communications and Education, English and Psychology. Kathleen resides outside of Boston, MA with her husband and four children. Follow @KATHLEENSKELTON