Synthesis and characterization of polyepichlorohydrin-based copolymers with biphenyl groups attached thioether unit

Abstract

Three novel copolymers, poly[1-(4-(benzothiazole-2-thio-alkyloxy)-biphenyl-4′-oxy)2.3-epoxypropane]s, were synthesized by the reaction of polyepichlorohydrin with obtained monomers, 4-(benzothiazole-2-thio-alkyloxy)biphenyl-4′-ols, in which the number of methylene unit in substitution group of biphenyl group was 2, 4, 6, respectively. The structures of obtained compounds were confirmed by elemental analysis and ¹H NMR. The decomposition temperatures of copolymers were near 340 °C. Differential scanning calorimetry (DSC) measurement and polarized optical microscopy (POM) observation showed the resulting copolymers did not exhibit thermotropic liquid crystalline mesomophism and belonged to semi-crystalline substance.

Keywords

biphenyl group / polyepichlorohydrine / synthesis / thermal properties

References

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