“…For TPEEA synthesis, dimethyl terephthalate (DMT) (Elana, Poland); 1,3-propanediol (3G) (Sigma-Aldrich, USA); poly(tetramethyleneoxide)diol (PTMO) (M w = 1000 g/mol, Du Pont, USA); α,ω-dicarboxilic oligo(laurolactam) (OA12) (M w = 2000 g/mol) obtained inhouse, according to the procedure described in [52]; pentaerythritol (technological additive increasing the melt viscosity of the polymer) -Brenntag, Germany; TiO 2 /SiO 2 as a catalyst (Sachtleben Chemic GmbH, Germany); Irganox 1010 and Irgafos 126 as thermal stabilizers (Ciba Geigy, Switzerland); triethyl phosphate (TEP) as thermooxidative stabilizer (Rhodia, Belgium) were used.…”