Three kinds of color-changing poly(phenylene sulfide)(PPS) were synthesized by the reaction of dihalogenated monomer and sodium sulfide(Na2S·xH2O) via nucleophilic substitution polymerization under high pressure.The polymers were characterized by FT-IR spectrum,X-ray diffraction,DSC,TGA,mechanical test and dissolvability experiment.These polymers were found to have good thermal performance.At the same time the resultant resins had high tensile strength and compressive strength.Also they showed a special pro...