Abstract
Teflon-AF, based on the perfluoro-2,2-dimethyl-1,3-dioxole monomer (1), is a new class of high-T g amorphous fluoroplastics with enhanced properties over traditional fluoropolymers. New monomer and polymer chemistrythat relates to fluorodioxole molecules was explored. Synthetic methods for introducing different substituents at 2-, 4-, and 5-positions of the dioxole ring were developed. The structure-property relationships of these polymerswere studied, and we have found that the polymer T g 's are highly sensitive toward the structure of these monomers. The results indicated that the steric bulkiness of the substituents on the dioxole ring is critical for polymer properties, not only in the determination of T g but also on the rate of polymerization
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