Bio-based polyamide

Khedr, Medhat S. Farahat

doi:10.1515/psr-2020-0076

Cited by 3 publications

(3 citation statements)

References 35 publications

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“…Polyamides are a polymer made up of repeating amide monomer units [ 56 ]. Aliphatic polyamides are known as Nylon with an amorphous and semi-crystalline structure [ 72 ] , and although most polyamides are obtained by chemical synthesis, currently chemistry, modern polymer technology offers a novel approach to obtain polyamides in a biological way in which the monomers are obtained from sources of castor oil, biomass, sugars, starch or lignocellulose [ 56 ]. Ricinus communis plant is the main biomass feedstock for castor oil production.…”

Section: Membrane Fabrication In An Environmentally Friendly Waymentioning

confidence: 99%

“…Ricinus communis plant is the main biomass feedstock for castor oil production. Under chemical transformations, it is converted into monomeric materials such as adipic acid, 1,6-hexanediamine, 1,4-butanediamine, 1,8-octanedicarboxylic acid, 1,10-decanediamine, 11-aminoundecanoic acid for the polymerization of a versatile group of polyamides [ 72 ]. Terpene-based polyamides are prepared today via polyaddition and polycondensation reactions and ring-opening polymerization.…”

Section: Membrane Fabrication In An Environmentally Friendly Waymentioning

confidence: 99%

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Bio-Based Polymeric Membranes: Development and Environmental Applications

et al. 2023

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Nowadays, membrane technology is an efficient process for separating compounds with minimal structural abrasion; however, the manufacture of membranes still has several drawbacks to being profitable and competitive commercially under an environmentally friendly approach. In this sense, this review focuses on bio-based polymeric membranes as an alternative to solve the environmental concern caused by the use of polymeric materials of fossil origin. The fabrication of bio-based polymeric membranes is explained through a general description of elements such as the selection of bio-based polymers, the preparation methods, the usefulness of additives, the search for green solvents, and the characterization of the membranes. The advantages and disadvantages of bio-based polymeric membranes are discussed, and the application of bio-based membranes to recover organic and inorganic contaminants is also discussed.

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Section: Membrane Fabrication In An Environmentally Friendly Waymentioning

confidence: 99%

Section: Membrane Fabrication In An Environmentally Friendly Waymentioning

confidence: 99%

Bio-Based Polymeric Membranes: Development and Environmental Applications

et al. 2023

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“…Presently, the reports on the AMFC synthesis remain limited, although it has great potential in polymer and pharmaceutical industries [7a,9] . Lankenau et al.…”

Section: Introductionmentioning

confidence: 99%

One‐pot Twostep Chemobiocatalytic Synthesis of a Furan Amino Acid from 5‐Hydroxymethylfurfural

Wu,

Li,

Zong

et al. 2024

Chemistry A European J

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Recently, catalytic valorization of biomass‐derived furans has received growing interest. 5‐Aminomethyl‐2‐furancarboxylic acid (AMFC), a furan amino acid, holds great promise in the aeras of polymer and pharmaceutical, but its synthesis remains limited. In this work, we report a chemobiocatalytic route toward AMFC by combining laccase‐TEMPO system and recombinant Escherichia coli (named E. coli_TAF) harboring ω‐transaminase (TA), L‐alanine dehydrogenase (L‐AlaDH) and formate dehydrogenase (FDH), starting from 5‐hydroxymethylfurfural (HMF). In the cascade, HMF is oxidized into 5‐formyl‐2‐furancarboxylic acid (FFCA) by laccase‐TEMPO system, and then the resulting intermediate was converted into AMFC by E. coli_TAF via transamination with cheap ammonium formate instead of costly organic amine donors, theoretically generating H2O and CO2 as by‐products. The tandem process was run in a one‐pot twostep manner, affording AMFC with approximately 81% yield, together with 10% 2,5‐furandicarboxylic acid (FDCA) as by‐product. In addition, the scale‐up production of AMFC was demonstrated, with 0.41 g/L h productivity and 8.6 g/L titer. This work may pave the way for green manufacturing of the furan‐containing amino acid.

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Efficient Strategy to Enhance the Properties of Fully Biobased Linear Dimeric Acid Polyamides

Liang,

Zhao,

et al. 2024

ACS Appl. Polym. Mater.

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Dimeric acid (DA) is a biobased derivative of plant oil. Its polyamides are usually weak polymers with a low melting point. In this work, an efficient strategy was developed to enhance the thermal and mechanical properties of DA polyamides (DAPAs). Two H2N-terminated DAPA prepolymers (DAPAhs and DAPAddas) were synthesized through melt polycondensation of dimeric acid with hexanediamine and decanediamine (DDA), respectively. Diethyl oxalate was used as a chain extender to increase the molecular weight, and modified DAPAs (DAPAhs-DEO and DAPAddas-DEO) were obtained. Short and easy crystallizable oxamide hard segments effectively improved the mechanical properties, crystallization, and hydrophobicity of the DAPAs. The biobased modified DAPAs exhibited good tensile strength up to 27 MPa, T m between 105 and 151 °C, and water contact angles from 84 to 98°. Compared to DAPAhs-DEO, DAPAddas-DEO exhibited better comprehensive mechanical properties because longer DDA segments made the oxamide segments far from bulky DA segments and the oxamide segments in adjacent main chains approached easier. Different from brittle 65DAPAh, 65DAPAh-DEO, 65DAPAdda, and 65DAPAdda-DEO showed good peel strength on the aramid fabric. A simple and efficient method was established to prepare biobased DAPAs with excellent properties.

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Bio-based polyamide

Cited by 3 publications

References 35 publications

Bio-Based Polymeric Membranes: Development and Environmental Applications

Bio-Based Polymeric Membranes: Development and Environmental Applications

One‐pot Twostep Chemobiocatalytic Synthesis of a Furan Amino Acid from 5‐Hydroxymethylfurfural

Efficient Strategy to Enhance the Properties of Fully Biobased Linear Dimeric Acid Polyamides

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