Effect of biaxial stretching on the microstructure evolution, optical, mechanical and oxygen barrier properties of biodegradable poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) films

Liu, Xiaochao; Mo, Zhixiang; Cui, Lingna; Yu, Chongdong; Zou, Zhenyu; Liu, Yuejun; Zheng, Wei; Tan, Jin

doi:10.1016/j.ijbiomac.2023.126976

International Journal of Biological Macromolecules

2023

DOI: 10.1016/j.ijbiomac.2023.126976

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Effect of biaxial stretching on the microstructure evolution, optical, mechanical and oxygen barrier properties of biodegradable poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) films

Xiaochao Liu,

Zhixiang Mo,

Lingna Cui

et al.

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2024

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Cited by 10 publications

References 24 publications

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Enhancing mechanical and shape memory properties of polylactide/polyamide elastomer blends via reactive blending with a chain extender

Long,

Li,

et al. 2024

J of Applied Polymer Sci

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The structure and properties of incompatible polylactide (PLA)/polyamide elastomer (PAE) blends were tailored by a chain extender specifically the styrene–glycidyl acrylate copolymer Joncryl ADR4368 (ADR). Various PLA/PAE/ADR blends with different compositions were prepared by melt blending, and their morphology, crystallization behavior, and mechanical and the shape memory properties were systematically investigated. The results showed a uniform dispersion of PAE particles in the PLA matrix for the PLA blends with a reduction in particle size upon the addition of ADR. The crystallization of PLA was retarded, which was confirmed by a decrease in the melt crystallization temperature and an increase in cold crystallization temperature in the PLA/PAE/ADR blends. Rheological analysis showed an improvement in the melt elasticity of the PLA/PAE binary blend due to the presence of ADR, possibly attributed to the formation of long‐chain‐branched copolymers at the interface. Notably, the PLA/PAE/ADR blend exhibited superior toughness, featuring an elongation at break of 288% and a notched impact strength of 37 kJ·m−2, along with a high shape memory fixation rate and recovery rate when the ADR content was 1 wt%. Furthermore, the underlying toughening mechanism was elucidated. This work may offer an industrially scalable relevant model to fabricate high‐performance PLA materials.

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Enhancing mechanical and shape memory properties of polylactide/polyamide elastomer blends via reactive blending with a chain extender

Long,

Li,

et al. 2024

J of Applied Polymer Sci

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The application of poly(dimethyldiallylammonium chloride) in poly(butylene adipate‐co‐terephthalate)/starch composites

Yan,

Zhou,

Liu

et al. 2024

J of Applied Polymer Sci

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Antimicrobial degradable materials are pivotal in enhancing food safety, mitigating plastic pollution, and advancing sustainable development. In this study, poly(diallyldimethylammonium chloride) (PDMDAAC) was initially anchored to the starch surface (PMS) and utilized as a filler. Subsequently, poly(butylene adipate‐co‐terephthalate) (PBAT)/PMS composites with antimicrobial properties were successfully prepared by melt blending. The results showed that the introduction of PMS filler can improve the mechanical and antimicrobial properties of PBAT. Compared with pure PBAT, the tensile strength and modulus of PBAT/10PMS composites were enhanced by 25% and 29%, respectively. In addition, the prepared PBAT/PMS composites exhibited excellent antimicrobial activity against Escherichia coli when the PMS filler content reached 10 wt% or even higher. Therefore, an antimicrobial biodegradable composite was successfully prepared using a facile blending method in this study.

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Mechanism of the performance difference and effect of blow‐up ratio parameters on biodegradable poly (butyleneadipate‐co‐terephthalate)/polylactide composite mulch films

Wu,

Zhang,

Zhang

et al. 2024

Polymer Engineering & Sci

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The development and application of biodegradable mulching film is an efficient way to solve the “white pollution” of farmland. In the actual production, we found that the mulch film produced by different processing technology with the same formula showed quite different application properties. Here, the poly (butyleneadipate‐co‐terephthalate)/polylactide (PBAT/PLA) composite films with two die/screw diameters and eight blow‐up ratio were prepared by extrusion blowing. Results showed increasing blow‐up ratio can significantly improve the tensile strength at the transverse direction. In addition, the optical and water vapor barrier performances of the PBAT/PLA composite films were slightly effected. With the increasing of blow‐up ratio, the transverse molecular chain orientation of the polymer increases, resulting in changes in mechanical performance. This work can contribute to better understand the relationship between the performance and the manufacturing parameters of the biodegradable mulching films and foster the end‐user confidence in the eco‐friendly biodegradable mulch films.Highlights Eight PBAT/PLA mulch films with different blow‐up ratios were obtained. The properties of PBAT/PLA mulch films were mainly affected by blow‐up ratio. The relation between performance and manufacturing parameters was clarified. Die and screw diameter have no significant effect on film properties.

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Effect of biaxial stretching on the microstructure evolution, optical, mechanical and oxygen barrier properties of biodegradable poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) films

Cited by 10 publications

References 24 publications

Enhancing mechanical and shape memory properties of polylactide/polyamide elastomer blends via reactive blending with a chain extender

Enhancing mechanical and shape memory properties of polylactide/polyamide elastomer blends via reactive blending with a chain extender

The application of poly(dimethyldiallylammonium chloride) in poly(butylene adipate‐co‐terephthalate)/starch composites

Mechanism of the performance difference and effect of blow‐up ratio parameters on biodegradable poly (butyleneadipate‐co‐terephthalate)/polylactide composite mulch films

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