Synthesis and characterization of novel biodegradable copolyesters by transreaction of poly(ethylene terephthalate) with copoly(succinic anhydride/ethylene oxide)

Synthesis, crystallization and hydrolysis of aromatic–aliphatic copolyester: Poly(trimethylene terephthalate)-co-poly(l-lactic acid)

“…Reaction route of PTT-co-PLLA copolyester. 13 C NMR spectrum of PTT-co-PLLA2 copolyester and the peak assignments. b) enlarged spectrum in the range of quaternary aromatic carbons d and the methylene carbons b in the eOCH 2 CH 2 CH 2 Oe units.…”

“…The 13 C NMR spectrum of PTT-co-PLLA2 copolyester was shown in The actual terephthalate (T)/lactyl (L) molar ratio of PTT-co-PLLA copolyester was determined from the relative intensity of aromatic proton and lactyl methyl proton resonances in 1 H NMR spectrum. 1 H NMR spectrum of PTT-co-PLLA4 copolyester and the assignments were shown in Fig.…”

Characterization on mixed-crystal structure of poly(butylene terephthalate/succinate/adipate) biodegradable copolymer fibers

“…Furthermore, polymers of various characteristics can be produced by utilizing recent advances in the field of polymer synthesis. Among petroleum based biodegradable polymers, great interest has been given to researches on aliphatic/aromatic copolymers that are designed to combine the biodegradability of aliphatic unit with the beneficial physical properties of aromatic unit [9][10][11][12][13][14][15][16][17]. For example, poly(butylene adipate-co-terephthalate) (PBAT, 'Ecoflex') is a commercial aliphatic/aromatic biodegradable polymer product from BASF.…”

Hybrid acrylic‐polyurethane latexes: Emulsion versus miniemulsion polymerization

“…The difficulty in hydrolyzing and biodegrading aromatic polyesters is a well‐known fact 3–6. However, previous studies on the degradability of polyesters containing sugar moieties have revealed that the presence of these units increases the hydrophilicity of polyesters and enhances the attack by water 14, 15, 21.…”

“…Despite being innocuous for humans, they are considered unfriendly compounds because of their great resistance to degradation by atmospheric and biological agents. Thus, different strategies to obtain modified aromatic polyesters able to be chemically degraded under smooth conditions or biologically degraded are currently drawing an enormous interest 3–6…”