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Measurement of the optical activity of some stereoregular vinyl polymers in the crystalline state

✍ Scribed by Bonsignori, O. ;Lorenzi, G. P.

Publisher: Wiley (John Wiley & Sons)
Year: 1970
Tongue: English
Weight: 549 KB
Volume: 8
Category: Article
ISSN: 0449-2978
DOI: 10.1002/pol.1970.160081001

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✦ Synopsis

Abstract

The general problems presented by the determination of the optical activity of polymers in the crystalline state are considered. The necessity of using unoriented samples, if the polarimetric data are to be compared with analogous data measured in solution, is emphasized. The optical activity in the crystalline state of a number of stereoregular vinyl polymers has been measured by employing either suspensions of fine powders or thin plates with no detectable orientation. The results of optical rotatory dispersion studies in the crystalline state suggest that, at least in the case of the poly‐α‐olefins investigated, the same chromophores are responsible for the optical activity in the crystalline state and in solution.

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