Recent advances in the development of biodegradable PHB-based toughening materials: Approaches, advantages and applications

Yeo, Jayven Chee Chuan; Muiruri, Joseph Kinyanjui; Thitsartarn, Warintorn; Liu, Yupeng; He, Chaobin

doi:10.1016/j.msec.2017.11.006

Cited by 259 publications

(181 citation statements)

References 136 publications

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“…Thermogravimetric analysis (TGA) was then performed, in order to evaluate the thermal stability of the LLDPE/P(3HB) blends. This is a very important point, due to the well-known processability limits of P(3HB) (Yeo et al, 2017). The curves of the weight loss as a function of the temperature and their corresponding derivative curves are presented in Figures 5A,B.…”

Section: Resultsmentioning

confidence: 96%

Thermo-Mechanical Behavior and Hydrolytic Degradation of Linear Low Density Polyethylene/Poly(3-hydroxybutyrate) Blends

2020

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In this work, a commercial linear low density polyethylene (LLDPE) utilized for packaging applications was melt compounded with different amounts (from 10 up to 50 wt. %) of poly(3-hydroxybutyrate) [P(3HB)], with the aim to evaluate the possibility to partially replace LLDPE with a biodegradable matrix obtained from renewable resources. The processability, microstructural, and thermo-mechanical behavior of the resulting blends was investigated. Melt flow index (MFI) values of the LLDPE matrix were not much affected until a P(3HB) content of 20 wt.%, while for higher P(3HB) concentrations an evident decrease of the viscosity was detected. Scanning electron microscope (SEM) observations on the blends highlighted that at limited P(3HB) concentrations the secondary phase was homogeneously dispersed in form of isolated domains, while at a P(3HB) content of 50 wt.% a continuous layered morphology could be detected. Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR) did not evidence any chemical or physical interaction between the two polymer phases. Quasi-static tensile tests and dynamical mechanical analysis showed that the introduction of P(3HB) led to a pronounced stiffening effect, while the progressive drop of the yield and ultimate mechanical properties could be attributed to the weak interfacial adhesion and poor compatibility between the two matrices. The resistance to hydrolytic degradation of the LLDPE/P(3HB) blends was evaluated over a period of 100 days of immersion in water at 50 • C. It was observed that the weight variation and the decrease of the tensile properties due to the hydrolytic process on the biodegradable phase were evident only for a P3HB content of 50 wt.%. In conclusion, this work showed that the partial replacement of LLDPE with a biobased P(3HB) could lead to the development of an innovative blend with good processability and mechanical properties, until a P(3HB) amount of 20 wt.%.

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Section: Resultsmentioning

confidence: 96%

Thermo-Mechanical Behavior and Hydrolytic Degradation of Linear Low Density Polyethylene/Poly(3-hydroxybutyrate) Blends

2020

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“…Blending and addition of plasticisers was widely investigated to improve the mechanical properties of sclPHA towards packaging applications [276][277][278]. While some efforts resulted in a material with improved toughness, ductility, and water properties [278], it is hard to overcome the intrinsic aging effect based on secondary crystallisation, as well as slow crystallisation rate, resulting in easy fracture of the material [279]. There are some reports which suggest that certain plasticisers, such as tri(ethylene glycol) bis(2-ethylhexanoate), triethyl citrate, and tributyl citrate, have no or even negative effects on the mechanical performance of PHB [276].…”

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

Recent Advances in Bioplastics: Application and Biodegradation

et al. 2020

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The success of oil-based plastics and the continued growth of production and utilisation can be attributed to their cost, durability, strength to weight ratio, and eight contributions to the ease of everyday life. However, their mainly single use, durability and recalcitrant nature have led to a substantial increase of plastics as a fraction of municipal solid waste. The need to substitute single use products that are not easy to collect has inspired a lot of research towards finding sustainable replacements for oil-based plastics. In addition, specific physicochemical, biological, and degradation properties of biodegradable polymers have made them attractive materials for biomedical applications. This review summarises the advances in drug delivery systems, specifically design of nanoparticles based on the biodegradable polymers. We also discuss the research performed in the area of biophotonics and challenges and opportunities brought by the design and application of biodegradable polymers in tissue engineering. We then discuss state-of-the-art research in the design and application of biodegradable polymers in packaging and emphasise the advances in smart packaging development. Finally, we provide an overview of the biodegradation of these polymers and composites in managed and unmanaged environments.

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“…However, PHB has physical aging effect, leading to brittleness, which is caused by secondary crystallization resulting in low elongation at break of 5–7% and thermal instability as it degrades on ester bond at 170–200°C via random chain scission . Moreover, high production cost limits its applications on commercial as well as industrial scales . So there is a need to incorporate PHB with other materials or biopolymers for the development of some novel PHB based biocomposites for value addition.…”

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

“…74 Moreover, high production cost limits its applications on commercial as well as industrial scales. 75 So there is a need to incorporate PHB with other materials or biopolymers for the development of some novel PHB based biocomposites for value addition. that can be incorporated with PHB through injection, extrusion or compression moldings.…”

Section: Poly(hydroxybutyrate)mentioning

confidence: 99%

Recent developments in the synthesis of poly(hydroxybutyrate) based biocomposites

Raza

Noor

Khalil

2019

Biotechnology Progress

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Poly(hydroxybutyrate) (PHB) has become an attractive biomaterial in research and development for past few years. It is natural bio‐based aliphatic polyester produced by many types of bacteria. Due to its biodegradable, biocompatible, and eco‐friendly nature, PHB can be used in line with bioactive species. However, high production cost, thermal instability, and poor mechanical properties limit its desirable applications. So there is need to incorporate PHB with other materials or biopolymers for the development of some novel PHB based biocomposites for value addition. Many attempts have been employed to incorporate PHB with other biomaterials (or biopolymers) to develop sustainable biocomposites. In this review, some recent developments in the synthesis of PHB based biocomposites and their biomedical, packaging and tissue engineering applications have been focused. The development of biodegradable PHB based biocomposites with improved mechanical properties could be used to overcome its native limitations hence to open new possibilities for industrial applications.

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Recent advances in the development of biodegradable PHB-based toughening materials: Approaches, advantages and applications

Cited by 259 publications

References 136 publications

Thermo-Mechanical Behavior and Hydrolytic Degradation of Linear Low Density Polyethylene/Poly(3-hydroxybutyrate) Blends

Thermo-Mechanical Behavior and Hydrolytic Degradation of Linear Low Density Polyethylene/Poly(3-hydroxybutyrate) Blends

Recent Advances in Bioplastics: Application and Biodegradation

Recent developments in the synthesis of poly(hydroxybutyrate) based biocomposites

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