Need for Bioplastics and Role of Biopolymer PHB: A Short Review

Sn, Bharti; G, Swetha

doi:10.4172/2157-7463.1000272

Cited by 12 publications

(1 citation statement)

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“…PHB is produced in the cells of microorganisms [45], as product of microbial secondary metabolism, usually in conditions when the cells are subjected to nutrient stress or in an unfavorable environment such as carbon-excessive with limited nutrients [46], which is possible in both gram-positive and gram-negative bacteria. The accumulation of the material is a natural technique used by microorganisms to store carbon and energy when essential nutrient supplies are imbalanced or depleted [47].…”

Section: Phb Synthesismentioning

confidence: 99%

Production of Polyhydroxybutyrate (PHB) and Factors Impacting Its Chemical and Mechanical Characteristics

et al. 2020

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Plastic pollution is fueling the grave environmental threats currently facing humans, the animal kingdom, and the planet. The pursuit of renewable resourced biodegradable materials commenced in the 1970s with the need for carbon neutral fully sustainable products driving important progress in recent years. The development of bioplastic materials is highlighted as imperative to the solutions to our global environment challenges and to the restoration of the wellbeing of our planet. Bio-based plastics are becoming increasingly sustainable and are expected to substitute fossil-based plastics. Bioplastics currently include both, nondegradable and biodegradable compositions, depending on factors including the origins of production and post-use management and conditions. Among the most promising materials being developed and evaluated is polyhydroxybutyrate (PHB), a microbial bioprocessed polyester belonging to the polyhydroxyalkanoate (PHA) family. This biocompatible and non-toxic polymer is biosynthesized and accumulated by a number of specialized bacterial strains. The favorable mechanical properties and amenability to biodegradation when exposed to certain active biological environments, earmark PHB as a high potential replacement for petrochemical based polymers such as ubiquitous high density polyethylene (HDPE). To date, high production costs, minimal yields, production technology complexities, and difficulties relating to downstream processing are limiting factors for its progression and expansion in the marketplace. This review examines the chemical, mechanical, thermal, and crystalline characteristics of PHB, as well as various fermentation processing factors which influence the properties of PHB materials.

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Section: Phb Synthesismentioning

confidence: 99%

Production of Polyhydroxybutyrate (PHB) and Factors Impacting Its Chemical and Mechanical Characteristics

et al. 2020

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Potential of polyhydroxyalkanoate and nanocellulose from oil palm trunk as raw materials for additive manufacturing: A review

et al. 2022

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Additive manufacturing (AM) is beneficial due to its fast prototyping, non‐complexity process, flexibility, which allows for a wide range of innovations. The AM presented in this review concentrated solely on the fused deposition modeling method. The application of polyhydroxyalkanoate (PHA) biopolymer in conjunction with AM technology in accordance with the interest of researchers in practicing sustainable development. Most studies discovered that the features of PHA, such as its brittleness, slow crystallization, and small processing window, may be overcome by blending it with other polymers. In particular, the physical and chemical properties of PHA have a strong influence on its printability in three‐dimensional printing. Furthermore, this article discussed the use of nanocellulose as a reinforcing material in PHA blends due to its high‐surface area, lightweight, and excellent biocompatibility. The limitations in creating and applying PHA were also highlighted, as it was expensive and difficult to process at high temperatures. Overall, this article provided an overview of AM, including the potential of oil palm trunk as a source of PHA and nanocellulose for bio‐composite products.

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Production, Characterization, and Applications of Biodegradable Polymer: Polyhydroxyalkanoates

Pradhan

Dikshit

Moholkar

2020

Materials Horizons: From Nature to Nanomaterials

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Need for Bioplastics and Role of Biopolymer PHB: A Short Review

Cited by 12 publications

References 0 publications

Production of Polyhydroxybutyrate (PHB) and Factors Impacting Its Chemical and Mechanical Characteristics

Production of Polyhydroxybutyrate (PHB) and Factors Impacting Its Chemical and Mechanical Characteristics

Potential of polyhydroxyalkanoate and nanocellulose from oil palm trunk as raw materials for additive manufacturing: A review

Production, Characterization, and Applications of Biodegradable Polymer: Polyhydroxyalkanoates

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