Study of the Preparation and Properties of TPS/PBSA/PLA Biodegradable Composites

Abstract

Thermoplastic starch/butyl glycol ester copolymer/polylactic acid (TPS/PBSA/PLA) biodegradable composites were prepared by melt-mixing. The structure, microstructure, mechanical properties and heat resistance of the TPS/PBSA/PLA composites were studied by Fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), tensile test and thermogravimetry tests, respectively. The results showed that PBSA or PLA could bind to TPS by hydrogen bonding. SEM analysis showed that the composite represents an excellent dispersion and satisfied two-phase compatibility when the PLA, TPS and PBSA blended by a mass ration of 10, 30, and 60. The mechanical properties and the heat resistance of TPS/PBSA/PLA composite were improved by adding PLA with content less than 10%, according to the testing results.

Enhancement of Gas Barrier Properties and Durability of Poly(butylene succinate-co-butylene adipate)-Based Nanocomposites for Food Packaging Applications

“…The OTR of neat PBSA is 3.8 × 10 4 cm 3 µm (m 2 day) −1 which is in accordance with previous published work [ 6 , 18 , 28 , 31 , 40 ]. As observed in Figure 5 a, the addition of LDH into the polymer film obstructs the diffusion of the gas molecules through the film, which therefore lowers the OTR and improves the oxygen barrier property of the film.…”

“…In contrast, the TG curve of neat PBSA shows only one major mass loss step in the temperature range of 350–420 °C. This key mass loss event corresponds to the pyrolysis of the PBSA molecular chains [ 31 ]. As observed in Figure 2 , the introduction of LDH to the PBSA matrix decreases the temperature at which the major mass loss step occurs (extrapolated from 1st derivative of the mass loss step) from 402 °C for neat PBSA to 377, 360, and 355 °C for PBSA nanocomposite films with 2, 5, and 8 wt% LDH, respectively, which suggests that the introduction of LDHs to neat PBSA lowers the thermal stability of the nanocomposites.…”

Influence of Carbon Nanotubes on the Mechanical Properties of PLA/MWCNTS Printed Parts in FDM Process

“…The findings demonstrate that the printing path can have a substantial impact on the efficiency of the 3D printing system. By modifying the filling path of the consumables, the bonding direction between filaments, and the melting flow direction of the filament, the bonding between filaments and layers in the specimen can be improved, subsequently enhancing the mechanical strength of the specimen [8].…”

Hop natural fiber-reinforced poly(butylene succinate-co-butylene adipate) (PBSA) biodegradable plastics: effect of fiber length on the performance of biocomposites

“…12 PBSA is produced from the co-polymerization of succinic acid (SA) and/or adipic acid (AA) in the presence of butanediol (BDO). [13][14][15][16][17][18][19] The manufactured PBSA can also be biobased if biobased SA is used. 20 There is enormous potential in SA-derived polymers such as bio-polybutylene succinate (BioPBS) and BioPBSA.…”