Synthesis and characterization of novel poly(butylene succinate)‐based copolyesters designed as potential candidates for soft tissue engineering

Abstract

Poly(butylene succinate/diglycolate) copolymers by reactive blending were subjected to molecular and solidstate characterization to study the effects of transesterification reactions. 13 C-nuclear magnetic resonance analysis evidenced the formation of block copolymers. Thermal measurements showed that all the samples were semicrystalline, with a soft amorphous phase and a rigid crystal phase. Wide-angle x-ray diffraction measurements indicated that the copolymers are characterized by cocrystallization. The mechanical properties were found related to crystallinity degree. The random copolymer, characterized by the lowest crystallinity degree, exhibits the lowest elastic modulus and the highest deformation at break. Therefore, solid-state properties of poly(butylene succinate/diglycolate) copolymers can be tailored by acting on the molecular architecture.

Poly(butylene cyclohexanedicarboxylate/diglycolate) random copolymers reinforced with SWCNTs for multifunctional conductive biopolymer composites

“…As it can be seen from the data reported in Table 2, the glass transition temperature and &C p values were not influenced by the presence of nanofillers and the results here presented are in good agreement with those previously obtained for neat polymers [24]. During the second heating scan, DSC traces of neat polymers showed multiple melting peaks, due to melt-recrystallization processes [26]. With the addition of increasing amounts of SWCNTs, this phenomenon progressively disappeared, and single melting endotherms could be observed.…”

Crystallization kinetics, mechanical properties, and hydrolytic degradation of novel eco‐friendly poly(butylene diglycolate) containing ether linkages

“…Gigli et al . reported that PBDG had a T d of 330 °C, and PBS had a T d of 305 °C . Therefore, the thermal stability of the synthesized PBDG sample in this work was comparable to that of the sample reported by Gigli et al .…”

“…In recent years, the synthesis and physical properties of poly(diethylene glycol succinate) (PDEGS), poly(triethylene dodecanoate) (PTED), and poly(butylene diglycolate) (PBDG) containing ether linkages have been reported in literature . It should be emphasized that all of these polyesters are highly hydrophilic and flexible.…”

“…The synthesis, characterization, and mechanical properties of PBDG has been investigated recently . In literature, Gigli et al .…”

“…After the cooling process at 5 °C/min from the melt and the reheating process at 20 °C/min, the crystallization exothermic peak and melting endothermic peak of PBDG under investigation were not observed. Moreover, they did not appear even at 1 °C/min, indicating its weak crystallization ability …”