Some peculiarities of the polymerization of propiolic acid and its salts

Abstract

This paper treats some theoretical premises determining peculiarities of acetylene polymerization and properties of polyene systems containing carboxy groups. Some kinetic mechanisms of the radiation polymerization of propiolic acid in the liquid phase were experimentally studied. It is shown that solid‐state polymerization of propiolic acid leads to the formation of the polymer with a higher molecular mass and greater effective conjugate length. The solid‐state polymerization of propiolic acid salts illustrates the dependence of the inclination to polymerization of ion metal radius. Some properties of polypropiolic acid and its salts were investigated, in particular, their inclination to photochemical reactions. A certain influence of the polyconjugate system and of the type of polyene chain configuration on the polypropiolic acid property as polyelectrolyte was discovered.

Development of new technologies for solid‐state polymerization. A conceptual and experimental approach

“…Finally, we have begun an investigation of the solid-state reactivity of salts and complexes of propiolic acid, H -C=C -COOH, upon exposure to prays. Again, a wide range of reactivity has been observed, which is consistent with an earlier report in the literature [21]. Our work here currently is centered on the growth and reactivity of single crystals of metal propiolates.…”

Ionic Polyacetylene with Aromatic Functional Groups: Synthesis and Properties

“…The polyelectrolytes include proteins, nucleic acids, pectins, poly(acrylic acid) and poly(styrene sulfonate). Conjugated polyelectrolytes, such as poly(propiolic salt)s,18 triethylammonium salt of poly(6‐bromo‐1‐hexyne)19 and poly(ethynylpyridine)s,20, 21 have been synthesized. In 1991, a new family of mono‐ and di‐substituted polyacetylenes that retain extensive conjugation were prepared through the activated polymerization of ethynylpyridines with alkyl halides 22, 23.…”

Scientific surgery

“…They can polymerize to poly(propiolate) salts when exposed to heat, X‐ or γ‐ray irradiation 53, 54. Once mixed with strong oxidants they become potentially explosive (Warning: propiolate salts are energetic materials and must be kept away from heat and strong oxidants.).…”