Synthesis and mesogenic properties of four series of polyesters derived from dicarboxylic and dihydroxylic aromatic monomers

✍ Scribed by Joaquín Barberá; Fernando Navarro; Luis Oriol; Milagros Piñol; José Luis Serrano

• Book ID: 105337460
• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 610 KB
• Volume: 28
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/pola.1990.080280402

✦ Synopsis

Abstract

Some members of four series of polyesters were synthesized by the direct polycondensation of two types of dicarboxylic acids (4,4′‐dicarboxy‐α,ω‐diphenoxyalkanes and 4,4′‐dicarboxy‐α,ω‐dibenzoyloxyalkanes) with two types of bisphenols (4,4′‐dihydroxy‐α,ω‐diphenoxyalkanes and 4,4′‐dihydroxy‐α,ω‐dibenzoyloxyalkanes) using tosyl chloride in pyridine in the presence of N, N‐dimethylformamide. The ^1^H‐NMR spectra of the polymers synthesized showed that these polymers have an ordenated structure. The mesogenic properties of these polymers were studied by optical microscopy and differential scanning calorimetry. Many of the polymers show nematic mesomorphism.