Thermal degradation behavior of bacterial poly(3-hydroxybutyrate-co-3-mercaptopropionate)

Huang, Pengtao; Furutate, Sho; Matsumoto, Shoji; Tsuge, Takeharu

doi:10.1016/j.polymdegradstab.2019.04.016

Cited by 7 publications

(8 citation statements)

References 33 publications

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“…At the same time, information on the temperature of thermal degradation is almost completely absent; data on crystallization and glass transition temperatures are given for a few samples. Comparison of the results of the dependence of the crystallization temperature on the content of 3MP monomers in the copolymer obtained in this work is consistent with the data of other authors [ 35 , 37 ]. The maximum and minimum T g values were recorded for samples obtained using 3-mercaptopropionic acid as a precursor.…”

Section: Resultssupporting

confidence: 93%

“…It is important to note that the obtained values reflect the actual content of 3MP in the composition of the copolymer, since samples of copolymers isolated from cell biomass and purified were analyzed. An analysis of publications showed ( Table 1 ), that this precursor was studied for the synthesis of sulfur-containing PHA in a series of works [ 22 , 25 , 33 , 35 , 36 , 38 , 39 ]. So, in the culture of bacteria R. eutropha H16 and C. necator H16, depending on the type of carbon source (glucose, fructose, soya oil, safflower oil, castor oil or gluconate), the content of 3MP monomers varied very significantly and was minimally from 4.0 mol.% to 8.0 mol.%; maximally from 34.9 mol.% to 39.0 mol.%.…”

Section: Resultsmentioning

confidence: 99%

“…The M w of P(3HB- co -3MP) samples synthesized in the culture of R. eutropha H16 on gluconate was very high, but different (minimum 760 kDa and maximum 1132 kDa). However, polydispersity of these copolymer samles was close (3.7–3.8) [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

“…The leader of the publications and the first to discover the possibility of their synthesis was the team headed by Professor A. Steinbüchel (Germany). There are quite a few works published to date [ 22 , 23 , 25 , 31 , 32 , 33 , 34 , 35 , 36 ] ( Table 1 ). At the same time, they contain little information about the production culture parameters and, as a rule, low total PHA yields are reported.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Biosynthesis and Properties of Sulfur-Containing Polyhydroxyalkanoates (PHAs) Produced by Wild-Type Strain Cupriavidus necator B-10646

et al. 2023

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The study addresses the growth of the wild-type strain Cupriavidus necator B-10646 and the synthesis of sulfur-containing polyhydroxyalkanoates (PHA) by this strain on media containing fructose and three different precursors (3-mercaptopropionic acid, 3′,3′-dithiodipropionic acid and 3′,3′-thiodipropionic acid). By varying the concentration and number of doses of the precursors added into the bacterial culture, it was possible to find conditions that ensure the formation of 3-mercaptopropionate (3MP) monomers from the precursors and their incorporation into the C-chain of poly(3-hydroxybutyrate). A series of P(3HB-co-3MP) copolymer samples with different content of 3MP monomers (from 2.04 to 39.0 mol.%) were synthesized and the physicochemical properties were studied. The effect of 3MP monomers is manifested in a certain decrease in the molecular weight of the samples and an increase in polydispersity. Temperature changes are manifested in the appearance of two peaks in the melting region with different intervals regardless of the 3MP content. The studied P(3HB-co-3MP) samples, regardless of the content of 3MP monomers, are characterized by equalization of the ratio of the amorphous and crystalline phases and have a close degree of crystallinity with a minimum of 42%, = and a maximum of 54%.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biosynthesis and Properties of Sulfur-Containing Polyhydroxyalkanoates (PHAs) Produced by Wild-Type Strain Cupriavidus necator B-10646

et al. 2023

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“…More importantly, these pyrolysis products become feedstock for high-value polymeric polymers such as poly(crotonic acid) and vinyl compounds in various applications . Several studies have reported thermally destroyed PHAs by random chain scission of the ester groups, yielding varying percentages of crotonic acid (CA) at different temperatures. − Aside from the pyrolysis method, Yang and colleagues presented an intriguing recycling technique based on a microwave-assisted process employing green solvents such as alkaline methanol. At the ideal condition of 20 min of microwave heating at 110 °C, the PHB homopolyester may be completely decomposed to functional chemicals such as 3-hydroxybutanoic acid and 3-methoxybutanoic acid .…”

Section: End-of-life–life Cycle Assessment Nexus For Poly(hydroxyalka...mentioning

confidence: 99%

Poly(hydroxyalkanoates): Production, Applications and End-of-Life Strategies–Life Cycle Assessment Nexus

Muiruri

Yeo

Zhu

et al. 2022

ACS Sustainable Chem. Eng.

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The runaway production and consumption of oilbased plastics are key drivers of global warming and the increased carbon footprint. Besides, most of this plastic debris ends up in the oceans and constitutes about 80% of all marine debris. This pollution problem calls for a seismic shift to eco-friendly plastics and marine biodegradable ones. Unlike other biobased polymers, polyhydroxyalkanoates (PHAs) take pride in their degradation in soil and marine environments. This intriguing marine biodegradation property of PHAs sets it apart as the best choice to curb microplastics, particularly in marine ecosystems. PHAs have also grown in popularity due to other quintessential properties such as biocompatibility, structural variety, and similarity to conventional plastics in terms of physical properties. PHAs are being widely researched for various applications, including packaging, medical, energy, and agriculture. This perspective comprehensively focuses on the state-of-art production and applications of PHA plastics as well as the practical recycling strategies for postconsumer PHAs. The innovative "next generation industrial biotechnology" (NGIB) is well covered in this perspective. Moreover, the nexus between end-of-life strategies and life cycle assessment (LCA) of PHAs waste is elucidated to understand its impact on the environment thoroughly.

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Sustainable Polythioesters via Thio(no)lactones: Monomer Synthesis, Ring‐Opening Polymerization, End‐of‐Life Considerations, and Industrial Perspectives

Narmon

Slagmaat²,

Wildeman³

et al. 2023

ChemSusChem

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As the environmental effects of plastics are of ever greater concern, the industry is driven towards more sustainable polymers. Besides sustainability, our fast‐developing society imposes the need for highly versatile materials. Whereas aliphatic polyesters (PEs) are widely adopted and studied as next‐generation biobased and (bio)degradable materials, their sulfur‐containing analogs, polythioesters (PTEs), only recently gained attention. Nevertheless, the introduction of S atoms is known to often enhance thermal, mechanical, electrochemical, and optical properties, offering prospects for broad applicability. Furthermore, thanks to their thioester‐based backbone, PTEs are inherently susceptible to degradation, giving them a high sustainability potential. The key route to PTEs is through ring‐opening polymerization (ROP) of thio(no)lactones. This Review critically discusses the (potential) sustainability of the most relevant state‐of‐the‐art in every step from sulfur source to end‐of‐life treatment options of PTEs, obtained through ROP of thio(no)lactones. The benefits and drawbacks of PTEs versus PEs are highlighted, including their industrial perspective.

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Thermal degradation behavior of bacterial poly(3-hydroxybutyrate-co-3-mercaptopropionate)

Cited by 7 publications

References 33 publications

Biosynthesis and Properties of Sulfur-Containing Polyhydroxyalkanoates (PHAs) Produced by Wild-Type Strain Cupriavidus necator B-10646

Biosynthesis and Properties of Sulfur-Containing Polyhydroxyalkanoates (PHAs) Produced by Wild-Type Strain Cupriavidus necator B-10646

Poly(hydroxyalkanoates): Production, Applications and End-of-Life Strategies–Life Cycle Assessment Nexus

Sustainable Polythioesters via Thio(no)lactones: Monomer Synthesis, Ring‐Opening Polymerization, End‐of‐Life Considerations, and Industrial Perspectives

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