Abstract
The structures of copolymers of diallyl phthalate and styrene have been investigated using high-field nuclear magnetic resonance (n.m.r.). A method has been developed to measure accurately the amount of each component in the copolymer and to determine the ratio of ‘dangling’ diallyl phthalate groups to cyclized groups. This ratio is an important parameter in determining the properties of the polymer. Two-dimensional n.m.r. techniques have been used to assign the proton and 13C spectra obtained at 500 and 125.7 MHz respectively. This new method has been used to investigate the dependence of the degree of unsaturation on polymer composition, temperature of polymerization and percentage conversion.
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