Correlation between the chemical structure and enzymatic hydrolysis of Poly(butylene succinate), Poly(butylene adipate), and Poly(butylene suberate)

Effect of carvacrol in the properties of films based on poly (vinyl alcohol) with different molecular characteristics

“…Bhagabati et al [2] report that the polymer crystallinity and oxygen barrier capacity and transparency of PCL films have been shown to be highly dependent on the molecular weight. The molecular and chemical structure of the PBA and the PBS were relevant factors in the thermal behaviour and in the biodegradation by enzymatic hydrolysis of these polyester films [3]. Barrera et al [4] showed that the degree of hydrolysis of the PVA molecular chains generated significant differences in the glass transition temperature (Tg), the melting temperature (Tm) and the thermal degradation mechanisms of the PVA films.…”

Synthesis of Poly(Hexamethylene Succinate-Co-Ethylene Succinate) Copolymers With Different Physical Properties and Enzymatic Hydrolyzability by Regulating the Ratio of Monomer

“…XRD patterns and the corresponding X c of the hydrolyzed polyesters are presented in Figure 8 ; Table 2 , respectively. As shown in Figure 8A–F , the positions of diffraction peaks did not change after enzymatic hydrolysis, indicating that the crystal structure did not change( Bai et al, 2018b ); however, the degree of crystallinity varied with the copolyester chemical composition. The degree of crystallinity impacts the rate of enzymatic hydrolysis of the polyester ( Bai et al, 2018a ), where the materials with higher degrees of crystallinity have slower enzymatic hydrolysis rates ( Seretoudi et al, 2002 ; Yasuniwa and Satou, 2002 ; Bikiaris et al, 2006 ).…”

Back-to-monomer recycling of polycondensation polymers: opportunities for chemicals and enzymes

“…Initial efforts focussed on depolymerisation using lipases, which typically takes multiple days to reach completion. 190,191 A recent report by Bai et al described the depolymerisation of PBS lms with a cutinase similar to those applied for PET depolymerisation, achieving 90% weight loss of a PBS lm sample in 24 h. 192 The polyester poly(ethylene furanoate) (PEF) is widely advocated as a renewable alternative to PET in many application areas. The rst report on the synthesis of PEF dates back to 1946 by British Celanese, 193 but interesting properties like permeability and other physical/chemical characteristics were only explored in recent decades.…”

“…Initial efforts focussed on depolymerisation using lipases, which typically takes multiple days to reach completion. 190,191 A recent report by Bai et al described the depolymerisation of PBS films with a cutinase similar to those applied for PET depolymerisation, achieving 90% weight loss of a PBS film sample in 24 h. 192 …”