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Date of Award

1-1-1970

Access Type

Open Access Dissertation

Document type

dissertation

Degree Name

Doctor of Philosophy (PhD)

Degree Program

Polymer Science and Engineering

Abstract

The light scattering from crystalline polymer films has been used to characterize crystalline superstructures such as spherulites, rods and disks which are usually found in crystalline polymer films prepared from melts and cast or molded from concentrated solutions. The scattering has been shown to arise principally from internal heterogeneities of both density and orientation of optic axes of scattering elements occuring in polymer films over distances comparable with the wavelength of the light. It is possible by analyzing and separating the heterogeneities to evaluate the size, shape and type of the superstructures as a whole as well as the internal perfection of such superstructures in terms of both density and orientation. However the separation of the density and orientation heterogeneities, and the separation of the internal heterogeneities occuring in such superstructures from the properties related to the superstructure as a whole are still not completely succesful at this moment.

DOI

https://doi.org/10.7275/vvkh-j974

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