Comparison of the Vibrational Spectra and Assignments for α-Syndiotactic, β-Syndiotactic, Isotactic, and Atactic Polystyrene and Toluene

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Abstract:

Vibrational assignments for α-syndiotactic polystyrene are made with the use of parallel and perpendicular polarization of uniaxially oriented film, and by comparison of vibrational data and assignments for toluene and atactic and isotactic polystyrene. Vibrational assignments are given for a cast film of β-syndiotactic polystyrene. These assignments are made by comparison with assignments for toluene and isotactic and atactic polystyrene and partial assignments for α- and β-syndiotactic polystyrene. Some of our assignments suggest that the crystal structure of α-SPS may not be isomorphous with C 2v symmetry.

Keywords: Infrared; Molecular structure; Polystyrene isotactic; Polystyrene, atactic; Polystyrene, α-syndiotactic; Polystyrene, β-syndiotactic; Raman spectroscopy; Vibrational assignments: α-syndiotactic polystyrene, β-syndiotactic polystyrene, isotactic polystyrene; atactic polystyrene

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702924124321

Affiliations: 1: The Dow Chemical Company, Analytical Sciences Laboratory, 1897F Building, Midland, Michigan 48667 2: The Dow Chemical Company, 433 Building, Midland, Michigan 48667

Publication date: June 1, 1992

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