Telechelic polyesters of ethane diol and adipic or sebacic acid by means of bismuth carboxylates as non-toxic catalysts

Polyethylene sebacate: Genotoxicity, mutagenicity evaluation and application in periodontal drug delivery system

“…Eight hundred megahertz 1 H NMR spectra (Fig. 4) matches with the NMR spectra of PES reported in literature 26. PES exhibited a sharp melting endotherm at 62°C (Fig.…”

Synthesis, Properties and Applications of Biodegradable Polymers Derived from Diols and Dicarboxylic Acids: From Polyesters to Poly(ester amide)s

“…Nevertheless, high molecular weights were for example reported for poly(butylene adipate) (PBA) but under high vacuum and temperatures that render a high ratio of volatile byproducts [15,16]. …”

Synthesis of aliphatic polyesters by polycondensation using inorganic acid as catalyst

“…Polycondensation of diols with dicarboxylic acid dichlorides is limited by aliphatic dicarboxylic acid dichlorides' high cost, sensitivity to hydrolysis, and occurrence of side reactions 12. Azeotropic water removal by aromatic solvents in the presence of protic catalyst favor cyclization due to dilution and may yield high fractions of ether groups by proton‐catalyzed reaction of two alcohols 13, 14. The limitation of chain growth by cyclization is a common problem when reactions in solution are concerned 12…”

“…However, to reach these molecular weight values, very high temperature regime (230–240°C) was applied 7. At the high temperature (up to 240°C) required for the transesterification of diols with dimethyl esters of aliphatic dicarboxylic acids, volatility of numerous monomers such as ethylene diol or dimethyl esters of succinic and adipic acid is a serious problem, and depending on the catalyst ether groups may be formed 13. Another approach for polycondensation of diols with dicarboxylic acids is the use of nonspecific lipases 15–18.…”