Hydrolytic degradation behavior of poly(butylene succinate)s with different crystalline morphologies

Poly(butylene succinate) Ionomers with Enhanced Hydrodegradability

“…It is noteworthy to highlight that crystallinity of the three polyesters increased as degradation proceeded, with the highest values attained when samples were incubated in basic conditions. Such increase in crystallinity is indicative that hydrolysis has taken place preferably in the more permeable amorphous phase, as it is usually observed in semicrystalline polymers [32]. 1 H NMR spectra of PBS85SS15 residue and of the products released to the incubation medium after eight weeks of incubation are depicted in Figure 6.…”

Electrospinning and structural characterization of ultrafine poly(butylene succinate) fibers

“…The crystallinity of the PBS was calculated on the basis of the heat of fusion for PBS being 200 J/g [26]. Cho et al [27] reported that the crystallinity of ice-quenched PBS film was as high as 31.7% (a value which was recalculated in this study). After the annealing of the ultrafine PBS fibers at 95 8C for 4 days, their crystallinity was increased to 41.9%.…”

“…It was reported that the crystallization of electrospun polymer was retarded because the rapid solidification of polymer chains hindered the formation of crystals. However, although the crystallization of the electrospun PBS was retarded, the ultrafine PBS fibers showed 37.9% crystallinity due to its own high crystallization rate [17,26,27]. The crystallinity of the PBS was calculated on the basis of the heat of fusion for PBS being 200 J/g [26].…”

“…This hydrolytic degradation occurs preferentially in the amorphous region rather than the crystalline one, because water molecules can easily diffuse into the amorphous region of the polymer. The internal structure of the spherulites could be clearly observed from the enzymatic biodegradation of poly(bhydroxybutyrate) and the hydrolytic degradation of PBS, after the preferential degradation in the amorphous regions [27,29]. In this study, the microstructure of the electrospun PBS fibers was investigated through the preferential degradation of the amorphous regions of the ultrafine PBS fibers.…”

The microstructures of extrusion cast biodegradable poly(butylene succinate) films investigated by X-ray diffraction

“…It is known that the mechanical properties and biodegradability of PBS are determined by its structure such as the type of crystal, degree of crystallinity and orientation [5,6]. Such structural parameters can be tailored by controlling adequate thermal histories and processing conditions.…”