Aliphatic-aromatic poly(ester-carbonate)s obtained from simple carbonate esters, α,ω-aliphatic diols and dimethyl terephthalate

• Published in: Journal of polymer research 2015-03, Vol.22 (3), p.1-16, Article 34
• Main Authors: Mazurek, M., Bruliński, T., Tomczyk, K., Parzuchowski, P., Florjańczyk, Z., Plichta, A., Rokicki, G.
• Format: Article
• Language: English
• Subjects: Carbonates; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Copolymers; Dimethyl; Diols; Esters; Industrial Chemistry/Chemical Engineering; Linkages; Monomers; Original Paper; Polymer Sciences; Propylene; Terephthalate
• ISSN: 1022-9760; 1572-8935
• DOI: 10.1007/s10965-015-0655-0

Two reaction pathways for synthesis of high molar mass (M w above 50 000 g/mol) aliphatic-aromatic poly(ester-carbonate)s were elaborated. Simple organic carbonates such as dimethyl carbonate or propylene carbonate were used as carbonate linkage sources and dimethyl terephthalate as the precursor of ester linkages. 1,4-Butanediol, 1,5-pentanediol, 1,6-hexanediol and 1,10-decanediol were used as diol monomers. To adjust the carbonate units content in the copolymer, solid alkylene bis(methylcarbonate) was used as a semiproduct instead of volatile dimethyl carbonate. In case of usage propylene carbonate as a starting material the process can be carried out in one pot without the need for isolation of the semiproduct. The obtained copolymers based on 1,4-butanediol, containing ca. 50 mol.% of carbonate units exhibited better mechanical strength (37 MPa) than commercially available aliphatic-aromatic copolyester Ecoflex ® keeping the thermal properties at the same level.