Collect. Czech. Chem. Commun. 1984, 49, 2259-2268

Study of the effect of aggregation on the structure of syndiotactic poly(methyl methacrylate) by infrared spectra of its deuterated analogues

Jiří Dybala, Bohdan Schneidera and Marian Mihailovb

a Institute of Macromolecular Chemistry, Czechoslovak Academy of Sciences, 162 06 Prague 6
b Central Laboratory of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria


The temperature trends of the infrared spectra of the films of some specifically deuterated analogues of syndiotactic poly(methyl methacrylate) were measured and vibrational bands sensitive to the conformational structure of the carbon backbone and to the orientation of ester groups with respect to the main chain were determined. Analysis of the spectra has confirmed that aggregated syndiotactic poly(methyl methacrylate) contains a higher population of diads in the extended chain conformation in long syndiotactic sequences as compared to the nonaggregated polymer, and has shown that in the aggregate, ordering of ester groups also takes place.