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Evidence For A Second Crystal Form Of Polypropylene

H. Keith, F. J. Padden, N. Walter, H. Wyckoff
Published 1959 · Physics

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An attempt is made to account for the observed birefringence of the various types of polypropylene spherulite in terms of preferred crystalline orientation. Evidence is also presented showing that some of these spherulites crystallize with a new metastable crystal structure, not previously described.
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