Compatibility and mechanical properties of gelatin-filled polybutylene succinate composites

摘要

Gelatin nanoparticles (GNPs) with small size (200 nm) have been prepared by two-step solvent removal method using glutaraldehyde as crosslinking agent. The formation mechanism and characteristics were determined by Fourier transform infrared (FTIR), atomic force microscopy, and transmission electron microscopy. Polybutylene succinate/gelatin (PBS/GEL) and polybutylene succinate/nanogelatin (PBS/GNPs) composites by solvent hybridization were prepared. The dispersion of GEL/GNPs in the composites was observed by scanning electron microscopy, and the hybrid mechanism of GEL, GNPs, and PBS was explored. The results of FTIR and XPS indicated that the OH of GNPs was easier to obtain hydrogen bond with PBS. The swelling test showed that the swelling degree of PBS/GEL, PBS/GNPs reached 253 +/- 8.65% and 308 +/- 10.3% due to their good compatibility. Compared with pure PBS, especially when the ratio of PBS:GNPs was 1:0.75, the crystallinity of PBS/GNPs composites reached 36.43 +/- 5.7%, the elongation at break and tensile strength were 49.0 +/- 2.94% and 33.3 +/- 2.62 MPa, respectively. Overall, GNPs have played an active role in the heterogeneous nucleation of PBS matrix. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48881.