Production and waste treatment of polyesters: application of bioresources and biotechniques

Wang, Yaqun; Huang, Jinbo; Liang, Xiuhong; Wei, Manman; Liang, Fengbing; Feng, Dexin; Xu, Chao; Xian, Mo; Zou, Huibin

doi:10.1080/07388551.2022.2039590

Cited by 10 publications

(6 citation statements)

References 148 publications

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“…The polymerization of ethylene glycol (EG) and terephthalic acid (TPA) through the ester bond causes PET to be resistant to natural degradation due to its chemical inertness; thus, the overwhelming accumulation of PET leads to serious environmental problems [ 1 ]. Although mechanical and chemical processes are common methods to recycle and depolymerize PET, these processes consume high energy and resources [ 2 , 3 , 4 ]. Biodegradation by microorganism-derived enzymes extracted from bacteria or fungi has been successfully employed in various fields such as oil spill bioremediation and municipal solid wastes [ 5 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

In Silico Identification of Potential Sites for a Plastic-Degrading Enzyme by a Reverse Screening through the Protein Sequence Space and Molecular Dynamics Simulations

et al. 2022

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The accumulation of polyethylene terephthalate (PET) seriously harms the environment because of its high resistance to degradation. The recent discovery of the bacteria-secreted biodegradation enzyme, PETase, sheds light on PET recycling; however, the degradation efficiency is far from practical use. Here, in silico alanine scanning mutagenesis (ASM) and site-saturation mutagenesis (SSM) were employed to construct the protein sequence space from binding energy of the PETase–PET interaction to identify the number and position of mutation sites and their appropriate side-chain properties that could improve the PETase–PET interaction. The binding mechanisms of the potential PETase variant were investigated through atomistic molecular dynamics simulations. The results show that up to two mutation sites of PETase are preferable for use in protein engineering to enhance the PETase activity, and the proper side chain property depends on the mutation sites. The predicted variants agree well with prior experimental studies. Particularly, the PETase variants with S238C or Q119F could be a potential candidate for improving PETase. Our combination of in silico ASM and SSM could serve as an alternative protocol for protein engineering because of its simplicity and reliability. In addition, our findings could lead to PETase improvement, offering an important contribution towards a sustainable future.

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Section: Introductionmentioning

confidence: 99%

In Silico Identification of Potential Sites for a Plastic-Degrading Enzyme by a Reverse Screening through the Protein Sequence Space and Molecular Dynamics Simulations

et al. 2022

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“…Potential raw materials for PHA synthesis can be various individual compounds, as well as, most importantly, in various types of waste (e.g., the products of processing and hydrolysis of plant materials, waste from food, pharmaceutical waste, alcohol waste, pulp and paper waste, etc.) [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Polyhydroxyalkanoates in Cupriavidus necator B-10646 on Saturated Fatty Acids

Zhila,

Sapozhnikova,

Kiselev

et al. 2024

Polymers

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It has been established that the wild-type Cupriavidus necator B-10646 strain uses saturated fatty acids (SFAs) for growth and polyhydroxyalkanoate (PHA) synthesis. It uses lauric (12:0), myristic (14:0), palmitic (16:0) and stearic (18:0) acids as carbon sources; moreover, the elongation of the C-chain negatively affects the biomass and PHA yields. When bacteria grow on C12 and C14 fatty acids, the total biomass and PHA yields are comparable up to 7.5 g/L and 75%, respectively, which twice exceed the values that occur on longer C16 and C18 acids. Regardless of the type of SFAs, bacteria synthesize poly(3-hydroxybutyrate), which have a reduced crystallinity (Cx from 40 to 57%) and a molecular weight typical for poly(3-hydroxybutyrate) (P(3HB)) (Mw from 289 to 465 kDa), and obtained polymer samples demonstrate melting and degradation temperatures with a gap of about 100 °C. The ability of bacteria to assimilate SFAs opens up the possibility of attracting the synthesis of PHAs on complex fat-containing substrates, including waste.

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“…An alternative approach involves the incorporation of dynamic bonds (such as imine bonds, B–O bonds, Diels–Alder bonds, disulfide bonds, etc.) into the polymer network to confer dynamic properties. − Notably, furan derivatives derived from renewable resources with effective diene structures are highly susceptible to undergo Diels–Alder (DA) reactions. − The DA reaction shows distinct advantages in preparing self-healing polymers under mild reaction conditions, with thermal reversibility, the lack of a required catalyst, and few side reactions. − 5-Hydroxymethylfurfural (HMF) is a monomer derived from biomass, which can serve as a building block for the synthesis of novel monomers and polymers. , In addition to the inherent rigidity of the furan group, the presence of oxygen atoms in the furan ring also confers polymer bonding properties . Its exceptional environmental benefits and wide-ranging application potential render it an attractive candidate for sustainable materials development .…”

Section: Introductionmentioning

confidence: 99%

Biobased Polyester Network from 2,5-Furandicarboxylic Acid and 5,5′-((Dodecylazanediyl)bis(methylene))bis(furan-5,2-diyl))dimethanol: Shape Memory, Adhesiveness, Self-Healing, and Recyclability

Yi,

Dai,

et al. 2023

ACS Appl. Polym. Mater.

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The preparation of recyclable multifunctional biobased cross-linked polymers for different application environments and reducing dependence on petroleum products are important for sustainable development. Herein, we successfully synthesized a series of environmentally friendly, shape memory, adhesion, self-healing, and recyclable biobased polyester networks using 2,5-furandicarboxylic acid (FDCA) and 5,5′-((dodecylazanediyl)bis(methylene))bis(furan-5,2-diyl))dimethanol (DoDM) derived from renewable materials by introducing reversible Diels–Alder bonds with the addition of bismaleimide (BMI). Profiting from the freely rotating difuran ring group in DoDM, the cross-linked network with tunable thermal and mechanical properties can be constructed and present fascinating versatility. A kinetic analysis suggests that the reaction follows second-order kinetics, and the calculated activation energy is 48.1 kJ/mol with an optimal temperature of 60 °C. Different cross-linking densities of PDoF/BMI networks result in glass transition temperatures varying from 19 to 47 °C, tensile moduli from 22 to 529 MPa, and elongations at break from 5 to 120%. The PDoF/BMI network has a good shape memory performance: it can be fixed to a temporary shape below T g and restored to its original shape by heating above T g, with a shape recovery rate of up to 98%. In addition, the PDoF/BMI 10:1 polymer network can be used as a solvent-free adhesive with strong adhesion to glass (3.1 ± 0.5 kPa). The dynamic bond provides a self-healing response that can repair the surface scratch damage and contribute to 87% of the tensile stress recovery. Meanwhile, the PDoF/BMI film can be recovered after shredding, implying the good recyclability of the PDoF/BMI polymer. Therefore, the PDoF/BMI polymer, as a biobased multifunctional environmentally friendly material, has potential application prospects in a wide range of practical fields.

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Production and waste treatment of polyesters: application of bioresources and biotechniques

Cited by 10 publications

References 148 publications

In Silico Identification of Potential Sites for a Plastic-Degrading Enzyme by a Reverse Screening through the Protein Sequence Space and Molecular Dynamics Simulations

In Silico Identification of Potential Sites for a Plastic-Degrading Enzyme by a Reverse Screening through the Protein Sequence Space and Molecular Dynamics Simulations

Biosynthesis of Polyhydroxyalkanoates in Cupriavidus necator B-10646 on Saturated Fatty Acids

Biobased Polyester Network from 2,5-Furandicarboxylic Acid and 5,5′-((Dodecylazanediyl)bis(methylene))bis(furan-5,2-diyl))dimethanol: Shape Memory, Adhesiveness, Self-Healing, and Recyclability

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