Poly(hydroxyalkanoates) (PHAs) based circular materials for a sustainable future

Muiruri, Joseph Kinyanjui; Yeo, Jayven Chee Chuan; Loh, Xian Jun; Chen, Guoqiang; He, Chaobin; Liu, Yupeng

doi:10.1016/b978-0-323-91198-6.00002-4

Cited by 5 publications

(5 citation statements)

References 127 publications

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“…Bacterial cellulose (BC) is an ideal natural green reinforcing material for fabricating a high-quality modied PP electrode lm due to its unique dense reticulated nanostructure, hydrophilicity, biodegradability, and biocompatibility. 34,35 Recently, some BC-based ionic electroactive actuators exhibited bending deformations, such as BMIM-Cl-FDBC, 36 TOBC-IL-G, 37 FCBC-PPy-IL, 38 and BC-IL-MWCNT, 39 as well as our recently reported BC-IL-PVA 40 and CCNF-IL-GN actuators. 41 However, the majority focused on optimizing the intermediate polyelectrolyte layer, and then depositing PP solution on the polyelectrolyte surfaces via the dip/drop-casting method to obtain a three-layer actuator, which cannot guarantee the uniformity of the electrode lms.…”

Section: Introductionmentioning

confidence: 67%

Self-standing bacterial cellulose-reinforced poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) doped with graphene oxide composite electrodes for high-performance ionic electroactive soft actuators

Wu,

Cui,

et al. 2024

Nanoscale Adv.

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Section: Introductionmentioning

confidence: 67%

Self-standing bacterial cellulose-reinforced poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) doped with graphene oxide composite electrodes for high-performance ionic electroactive soft actuators

Wu,

Cui,

et al. 2024

Nanoscale Adv.

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“…These materials are a class of polymers with properties such as stiffness, ductility, and elasticity which can be tuned to suit different applications [ 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. As such, they have the potential to replace a wide range of conventional polyolefins [ 43 ]. This means that they can also be mechanically recycled [ 44 , 45 , 46 ], thermally degraded [ 47 , 48 , 49 , 50 ], and chemically solvolyzed [ 51 , 52 , 53 ].…”

Section: Introductionmentioning

confidence: 99%

Carbon Recycling of High Value Bioplastics: A Route to a Zero-Waste Future

Keith,

Koller,

Lackner

2024

Polymers

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Today, 98% of all plastics are fossil-based and non-biodegradable, and globally, only 9% are recycled. Microplastic and nanoplastic pollution is just beginning to be understood. As the global demand for sustainable alternatives to conventional plastics continues to rise, biobased and biodegradable plastics have emerged as a promising solution. This review article delves into the pivotal concept of carbon recycling as a pathway towards achieving a zero-waste future through the production and utilization of high-value bioplastics. The review comprehensively explores the current state of bioplastics (biobased and/or biodegradable materials), emphasizing the importance of carbon-neutral and circular approaches in their lifecycle. Today, bioplastics are chiefly used in low-value applications, such as packaging and single-use items. This article sheds light on value-added applications, like longer-lasting components and products, and demanding properties, for which bioplastics are increasingly being deployed. Based on the waste hierarchy paradigm—reduce, reuse, recycle—different use cases and end-of-life scenarios for materials will be described, including technological options for recycling, from mechanical to chemical methods. A special emphasis on common bioplastics—TPS, PLA, PHAs—as well as a discussion of composites, is provided. While it is acknowledged that the current plastics (waste) crisis stems largely from mismanagement, it needs to be stated that a radical solution must come from the core material side, including the intrinsic properties of the polymers and their formulations. The manner in which the cascaded use of bioplastics, labeling, legislation, recycling technologies, and consumer awareness can contribute to a zero-waste future for plastics is the core topics of this article.

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“…Because of the accelerated environmental pollution, considerable interest in biodegradable polymeric materials has seen extensive studies aimed at reducing the large amounts of waste from oil‐based polymeric materials 4,5 . This circular shift from linear pattern has provided several circular and sustainable alternatives to oil‐based plastics such as poly(hydroxyalkanoates) (PHAs), poly(lactic acid) (PLA), mycelium‐bound materials, lignocellulose, starches, and so forth 6 . Besides the biobased polymers, there exists biodegradable polymers that are fossil‐based, such as poly(caprolactone) (PCL), poly(butylene succinate) (PBS), poly(butylene adipate terephthalate) (PBAT).…”

Section: Introductionmentioning

confidence: 99%

“…4,5 This circular shift from linear pattern has provided several circular and sustainable alternatives to oil-based plastics such as poly(hydroxyalkanoates) (PHAs), poly(lactic acid) (PLA), mycelium-bound materials, lignocellulose, starches, and so forth. 6 Besides the biobased polymers, there exists biodegradable polymers that are fossil-based, such as poly(caprolactone) (PCL), poly(butylene succinate) (PBS), poly(butylene adipate terephthalate) (PBAT). These biodegradable polymers could be processed singly or in combination to obtain properties that meet the market requirements for applications, for example, single-use packaging.…”

Section: Introductionmentioning

confidence: 99%

Incorporating organoclays into sustainable starch/polylactide biocomposites for enhanced mechanical and thermal properties

Zhang

Muiruri

Yeo

et al. 2023

J of Applied Polymer Sci

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Starch is an essential biopolymer in biofuel production and a sizing agent in the paper and textile industries. However, native starch is unsuitable for most applications due to brittleness, inferior mechanical and thermal properties, and poor processability. In this regard, a series of modified starch‐based biopolymer composites were prepared by extrusion to produce composites with enhanced properties for enlarged applications. Unlike other studies, the developed thermoplastic starch (TPS) in this work was produced by gelatinizing starch with glycerol and poly(butylene succinate) (PBS) to induce both plasticization and compatibilization. The resultant TPS was blended with diverse organoclays and polylactide (PLA) via a twin‐screw extruder to obtain TPS/PLA/organoclay composites. The ensuing composites were studied for thermal and morphology properties using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Results showed that the organoclay loading highly influenced the mechanical and thermal properties of the TPS/PLA composites by enhancing the thermal stability and stiffness of the blends. More importantly, incorporating a small amount of organoclay into PLA enhanced its compatibility with TPS, as depicted in morphological studies. The enhanced crystallization and compatibilization of the blends resulted in enhanced mechanical properties of eco‐friendly composite materials for sustainable packaging applications.

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Poly(hydroxyalkanoates) (PHAs) based circular materials for a sustainable future

Cited by 5 publications

References 127 publications

Self-standing bacterial cellulose-reinforced poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) doped with graphene oxide composite electrodes for high-performance ionic electroactive soft actuators

Self-standing bacterial cellulose-reinforced poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) doped with graphene oxide composite electrodes for high-performance ionic electroactive soft actuators

Carbon Recycling of High Value Bioplastics: A Route to a Zero-Waste Future

Incorporating organoclays into sustainable starch/polylactide biocomposites for enhanced mechanical and thermal properties

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