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Infrared Study of Styrene-4-Methylstyrene Copolymers

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Abstract:

Two types of crystalline syndiotactic polystyrene units are observed in these styrene-p-methylstyrene copolymers. The low-temperature crystalline form is observed in copolymers containing 2 weight percent or less 4-methylstyrene, and the high-temperature crystalline form is observed in copolymers containing 3 to 7 weight percent 4-methylstyrene. Quantitative analysis of styrene-4-methylstyrene copolymers can be performed with the use of infrared spectroscopy and an infrared absorption band intensity ratio technique.

Keywords: Infrared; Molecular structure; Styrene copolymers

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702894202977

Affiliations: 1: Analytical Sciences, 1897 Building, Dow Chemical Company, Midland, Michigan 48667 2: Styrene Molding Polymers, 438 Building, Dow Chemical Company, Midland, Michigan 48667

Publication date: March 1, 1989

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