Synthesis and Properties of Poly(Propylene Glycol Maleate Phthalate)–Styrene Copolymers as a Base of Composite Materials

Abstract

Comparative analysis of the physicochemical properties of styrene solutions of poly(propylene glycol maleate phthalate) with different initial reactant ratio was performed. Increased content of phthalic anhydride in the initial monomer mixture in the synthesis of the unsaturated polyester leads to worse properties of the ready product, poly(propylene glycol maleate phthalate)–styrene copolymer prepared by cold curing. Solutions of poly(propylene glycol maleate phthalate) in styrene with ~30 wt % styrene content exhibit the highest viscosity, allowing the use of the cured product as a structural composite material. The solutions containing ~40 wt % styrene have lower viscosity and are suitable for preparing less hard plastics for general purposes.