Preparation and characterization of compatibilized composites of poly(butylene adipate-co-terephthalate) and thermoplastic starch by two-stage extrusion

Liu, Wenyong; Liu, Shenggong; Wang, Zhijie; Dai, Bingfeng; Chen, Yi; Zeng, Guangsheng

doi:10.1016/j.eurpolymj.2019.109369

Cited by 18 publications

(5 citation statements)

References 50 publications

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“…The transition temperature refers to the melting of butylene terephthalate (BT) crystals (de Campos et al, 2019; Silva et al, 2017). The transition near 110°C is due to the melting of the crystalline starch phase (Liu et al, 2020), and near 125°C is due to the melting of the crystalline PBAT phase. PBAT molecule has a rigid BT segment and a soft segment of butylene adipate (BA).…”

Section: Resultsmentioning

confidence: 99%

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Feasibility of production starch/poly(butylene adipate‐co‐terephthalate) biodegradable materials with microalgal biomass by blown film extrusion

Gallo-García

Peron-Schlosser

Carpiné

et al. 2022

J Food Process Engineering

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This research aimed to develop blends of corn starch and poly(butylene adipate-coterephthalate) (PBAT) films by blown film extrusion with the addition of biomass of Chlorella pyrenoidosa (CP). Two ultrasound tracts disrupted CP biomass: ultrasound bath and ultrasonic probe. The influence of CP biomass and disrupted CP biomass on the physical, mechanical, barrier, structural, and thermal properties of starch/PBAT films was evaluated. The film with higher content (5.0%) of CP biomass showed better values in tensile strength (TS) (4.37 MPa) and elongation (88.43%), and lower water vapor permeability (WVP) (5.19 Â 10 À11 g m À1 s À1 Pa À1 ) than the film incorporated with disrupted CP biomass. The ultrasound treatment applied to the cell disruption of the microalgae did not present improvements in the properties of the films. In this context, the cell disruption of CP biomass by ultrasound for incorporation into biodegradable films was not feasible. However, it was possible to produce starch/PBAT/microalgae films with potential application as food packaging due to natural bio-pigmentation's protection system against ultraviolet light. Practical ApplicationsFilms produced by blown extrusion from starch, PBAT, and CP microalgae biomass have the technological potential to be used as packaging for food products. Starch and PBAT blends are widely studied. The incorporation of PBAT is necessary to confer adequate mechanical properties to the extruded material. The plastic industries already use the blown extrusion method, allowing biodegradable packaging development on an industrial scale.

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Section: Resultsmentioning

confidence: 99%

“…PBAT is a biodegradable and compostable polyester (Jian et al, 2020) with the potential to replace conventional polymers, especially for packaging materials such as plastic bags or films (Dammak et al, 2020) due to its physical properties, including high flexibility, high strength, and excellent resistance to elongation (Liu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Feasibility of production starch/poly(butylene adipate‐co‐terephthalate) biodegradable materials with microalgal biomass by blown film extrusion

Gallo-García

Peron-Schlosser

Carpiné

et al. 2022

J Food Process Engineering

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“…Their research indicates that at a 60% starch content, the composite achieves a tensile strength of 10.95 MPa. In another study, Liu et al 10 fabricated a PBAT/thermoplastic starch (TPS) composite by incorporating nano SiO 2 as a reinforcing agent. The results demonstrated excellent mechanical properties, with a tensile strength of 17.4 MPa and an elongation at break of 1496.8%.…”

Section: Introductionmentioning

confidence: 99%

Improvement of mechanical and thermal expansion properties of pectinase treatment plant fiber reinforced starch/PBAT composites

Yang,

Wang,

et al. 2024

Polymer Composites

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This study discussed the impact of pectinase treatment on the properties of starch/PBAT composite, using two types of plant fibers such as coconut coir and bamboo fibers. The fibers underwent pretreatment with pectinase assisted by ultrasonics, and the composite was subsequently produced through hot pressing. The research focused on evaluating the thermal properties, mechanical properties, moisture absorption properties, and microstructure of the resulting composites. The findings revealed that the inclusion of pectinase‐treated plant fibers significantly enhanced the composite's strength. In particular, the bending strength of the composite with 15 wt% bamboo fibers exhibited the highest improvement, registering a 65% increase compared to the composite without added fibers. Additionally, the linear expansion coefficient of the plant fiber composite treated with pectinase was notably lower than that without added fibers. Among these, the linear expansion coefficient of the 15 wt% coir fiber composite decreased by 73.4% in the temperature range of 40–80°C compared to the composite without added fibers. The observed effects were attributed to the pectinase treatment, which proved effective in disrupting the network structure of cell walls, eliminating pectin components from fibers, and facilitating enhanced interaction between the fillers and the polymer matrix.Highlights The inclusion of fibers significantly enhanced the composite's strength. 10 wt% of bamboo fibers had a greater impact on the composite's strength than coir fiber. The linear expansion coefficient of the plant fiber composite decreased. The composite with 5 wt% bamboo fiber demonstrated excellent moisture resistance. The pectinase treatment enhanced interaction between fillers and matrix.

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“…The solution to this problem can be blending of starch with more hydrophobic biodegradable polyesters. The most studied starch blends are those based on poly(butylene adipate-co-terephthalate), PBAT [13,14], poly(ε-caprolactone), PCL [15,16], polylactide, PLA [11] and poly(butylene succinate), PBS [17,18]. In all cases, the introduction of TPS into polyester matrix caused significant reduction in mechanical properties and several attempts were made in order to improve the miscibility with biodegradable polyesters.…”

Section: Introductionmentioning

confidence: 99%

“…In all cases, the introduction of TPS into polyester matrix caused significant reduction in mechanical properties and several attempts were made in order to improve the miscibility with biodegradable polyesters. For this purpose poly(ethyleneco-vinyl alcohol), maleic anhydride [13] as well as PCL [19], PLA [20], PBAT [21], grafted with maleic anhydride and /or glycidyl methacrylate were used. However, it was also proved that mechanical properties and morphology of the PBAT/TPS blend can be controlled solely by changing the compounding parameters [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Electron-Beam Radiation and Other Sterilization Techniques on Structural, Mechanical and Microbiological Properties of Thermoplastic Starch Blend

et al. 2020

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This work investigates the potential application of various sterilization methods for microorganism inactivation on the thermoplastic starch blend surface. The influence of the e-beam and UV radiation, ethanol, isopropanol and microwave autoclave on structural and packaging properties were studied. All the applied methods were successful in the inactivation of yeast and molds, however only the e-beam radiation was able to remove the bacterial microflora. The FTIR analysis revealed no significant changes in the polymer structure, nevertheless, a deterioration of the mechanical properties of the blend was observed. The least invasive method was the UV radiation which did not affect the mechanical parameters and additionally improved the barrier properties of the tested material. Moreover, it was proved that during the e-beam radiation the chain scission and cross-linking occurred. The non-irradiated and irradiated samples were subjected to the enzymatic degradation studies performed in the presence of amylase. The results indicated that irradiation accelerated the decomposition of material, which was confirmed by the measurements of weight loss, and mass of glucose and starch released to the solution in the course of biodegradation, as well as the FTIR and thermal analysis.

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Preparation and characterization of compatibilized composites of poly(butylene adipate-co-terephthalate) and thermoplastic starch by two-stage extrusion

Cited by 18 publications

References 50 publications

Feasibility of production starch/poly(butylene adipate‐co‐terephthalate) biodegradable materials with microalgal biomass by blown film extrusion

Feasibility of production starch/poly(butylene adipate‐co‐terephthalate) biodegradable materials with microalgal biomass by blown film extrusion

Improvement of mechanical and thermal expansion properties of pectinase treatment plant fiber reinforced starch/PBAT composites

Effect of Electron-Beam Radiation and Other Sterilization Techniques on Structural, Mechanical and Microbiological Properties of Thermoplastic Starch Blend

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