Influence of the aggregated structures of layered double hydroxide nanoparticles on the degradation behavior of poly(butyleneadipate-co-terephthalate) composites

Yang, Kaijie; Liu, Wenying; Zhang, Sitong; Yu, Wenwen; Shi, Jiangao; Lin, Zaifu; Zheng, Qiang

doi:10.1016/j.clay.2022.106713

Cited by 8 publications

(6 citation statements)

References 49 publications

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“…Following a previously reported method, − alkaline hydrolysis was carried out within a 0.5 mol/L NaOH solution at 58 °C for 72 h, and the residual weights of each film sample were taken at certain time points. Biodegradation tests were also carried out in the field at Zhejiang University Yuquan Campus, using a similar method for nanocellulose-reinforced biocomposites. , The weight losses were monitored every other week, and the nanostructure changes were visualized using SEM.…”

Section: Methodsmentioning

confidence: 99%

Biodegradable Poly(butylene adipate-co-terephthalate) Nanocomposites Reinforced with In Situ Fibrillated Nanocelluloses

Wang,

Jin,

Lim

et al. 2023

ACS Sustainable Chem. Eng.

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The enhancement of mechanical properties is highly required for the expanded applications of biodegradable polymers like poly(butylene adipate-co-terephthalate) (PBAT). The use of nanocellulose as reinforcing fillers is one of the effective approaches while preserving the biodegradability of polymers, but the dispersion of nanofibers in polymer matrixes is a great challenge. Here, we report an in situ fibrillation method to prepare nanocellulose-reinforced PBAT composite films with superior mechanical properties and enhanced degradability while promoting the easy dispersion of natural plant fibers in the polymer matrix, which overcome the limitation of natural fiber composites for thin film applications. A hemicellulose-rich holocellulose fiber was selected and silanized prior to melt compounding with PBAT, in which in situ fibrillation of fibers and the dispersion of in situ fibrillated cellulose nanofibrils (CNFs) occurred simultaneously. The nanostructure, mechanical properties, and degradability of the resulting composite films were characterized. Compared with pristine PBAT, the incorporation of 1 wt % CNF fillers increased the tensile modulus by 82% while possessing a tensile strength of 26 MPa, an elongation of 372%, and a toughness of 75 MJ/m 3 , surpassing most reported data. Moreover, the degradability of PBAT was enhanced as well. Altogether, this study paves a new way of making biodegradable nanocomposites, which expand the application areas, especially where films are required.

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Section: Methodsmentioning

confidence: 99%

Biodegradable Poly(butylene adipate-co-terephthalate) Nanocomposites Reinforced with In Situ Fibrillated Nanocelluloses

Wang,

Jin,

Lim

et al. 2023

ACS Sustainable Chem. Eng.

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“…The presence of aromatic groups in its structure contributes to π-π stacking interaction which tends to increase the polymer's toughness and temperature resistance. 35 PBAT can also be processed through well-established techniques such as extrusion, blow, and injection molding. Alongside that, PBAT presents appreciable mechanical properties such as flexibility, and tensile strength that can be around 27 MPa, melt flow index (MFI) of 3-4 g/10 min (at 190 C and 2.16 kg), a density of 1260-1300 g/cm 3 and melting temperature in the range of 110-120 C, respectively.…”

Section: Poly(butylene Adipate-coterephthalate)mentioning

confidence: 99%

“…Alongside that, PBAT presents appreciable mechanical properties such as flexibility, and tensile strength that can be around 27 MPa, melt flow index (MFI) of 3-4 g/10 min (at 190 C and 2.16 kg), a density of 1260-1300 g/cm 3 and melting temperature in the range of 110-120 C, respectively. 35 Also, it has a transparent and glossy aspect. Hence, it can be applied in the packing sector, disposable products, agricultural-related uses, and textiles as it can be blended with fibers to introduce flexibility and softness.…”

Section: Poly(butylene Adipate-coterephthalate)mentioning

confidence: 99%

“…An example of PBAT synthesis is presented in Figure 3. The presence of aromatic groups in its structure contributes to π–π stacking interaction which tends to increase the polymer's toughness and temperature resistance 35 …”

Section: Types Of Biodegradable Polymersmentioning

confidence: 99%

“…PBAT can also be processed through well‐established techniques such as extrusion, blow, and injection molding. Alongside that, PBAT presents appreciable mechanical properties such as flexibility, and tensile strength that can be around 27 MPa, melt flow index (MFI) of 3–4 g/10 min (at 190°C and 2.16 kg), a density of 1260–1300 g/cm 3 and melting temperature in the range of 110–120°C, respectively 35 . Also, it has a transparent and glossy aspect.…”

Section: Types Of Biodegradable Polymersmentioning

confidence: 99%

See 2 more Smart Citations

Biodegradable polymers and composites: Recent development and challenges

Maurya,

de Souza,

Dawsey

et al. 2023

Polymer Composites

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Biodegradable polymers are highly sought after as they have the potential to reduce the issue of plastic waste and eventually lead to a circular economy. Yet, conciliating eco‐friendliness with competitive properties is often challenging. Polymerization and processing techniques have been developed and optimized to improve such factors. Some of the common polymerization methods to obtain such materials are condensation, ring‐opening, addition, and biocatalytic‐assisted polymerization. Alongside that, processing techniques such as melt mixing/extrusion, solution castings, compression, and injection molding have also been employed for the manufacture of biodegradable polymers. While these traditional techniques are viable routes to market, there is still the need to further improve their properties to make them comparable to their petrochemical‐based counterparts. To assist with that, the production of composites and blending techniques are facile approaches that demonstrated promising improvements in their properties. Based on these aspects, this review is aimed at discussing the main types of biodegradable polymers, followed by the compositing approaches reported in the recent literature, their structure–property relationships, and biodegradability mechanisms. The first section provides an introductory overview of biodegradable polymers and their composites. The second section focuses on the most prominent polymers used in the industry. Furthermore, the fabrication techniques, along with their property and application relationships are provided with an emphasis on mechanical reinforcements and the biomedical field. Finally, some future perspectives are given to clarify some of the known challenges and, possibly, provide some insights for the reader to develop novel ideas.

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Effect of Layered Double Hydroxide and Its Localization on the Structure and Properties of PBAT/PPC Composites

Jiang,

Wang,

Ren

2024

Macro Chemistry & Physics

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The blends of poly(butylene adipate‐co‐terephthalate) (PBAT), poly(propylene carbonate) (PPC), chain extender (ADR) and layered double hydroxides (LDH) are prepared by different extrusion methods. Effects of LDH and its distribution on rheology, phase morphology, mechanical properties, water vapor barrier properties and food preservation properties are investigated. Results show that when PBAT, PPC and LDH are mixed directly, LDH is preferentially distributed in the PBAT phase. When LDH are mixed with PPC firstly and then further with PBAT, LDH mostly migrates to the interface of PBAT and PPC. The epoxy groups of ADR react with the terminal groups of the polymers to improve the interfacial compatibility. Adding LDH, the mechanical properties and barrier properties of the materials are improved and by premixing of PPC and LDH, properties of composites are further improved. Compared with PBAT/PPC blends, the tensile strength and elongation at break of PBAT/PPC(LDH‐0.5)/ADR increased by 25.2% and 15.3%, respectively. The banana packaged in PBAT/PPC/LDH films maintains good freshness. It illustrates that PBAT/PPC(LDH)/ADR composites have a good application prospect in the field of barrier and food packaging based on their excellent mechanical, barrier and preservation properties.This article is protected by copyright. All rights reserved

show abstract

Influence of the aggregated structures of layered double hydroxide nanoparticles on the degradation behavior of poly(butyleneadipate-co-terephthalate) composites

Cited by 8 publications

References 49 publications

Biodegradable Poly(butylene adipate-co-terephthalate) Nanocomposites Reinforced with In Situ Fibrillated Nanocelluloses

Biodegradable Poly(butylene adipate-co-terephthalate) Nanocomposites Reinforced with In Situ Fibrillated Nanocelluloses

Biodegradable polymers and composites: Recent development and challenges

Effect of Layered Double Hydroxide and Its Localization on the Structure and Properties of PBAT/PPC Composites

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