Synthesis of thermoset elastomer from microbial oil derived from the fermentation of sugarcane DOI
Ana Paula Capêto, Braian Buitrago, Manuela Pintado

et al.

Journal of Applied Polymer Science, Journal Year: 2023, Volume and Issue: 141(10)

Published: Dec. 18, 2023

Abstract In the context of 21st century, integration diverse perspectives within circular economy framework, encompassing waste management, economic growth, and environmental sustainability, stands out as a paramount challenge. Addressing this challenge, an innovative avenue emerges through application microbial oil to replace traditional petroleum in synthesis essential commodity chemicals. This groundbreaking study takes significant step toward goal by introducing pioneering polyester material boasting exceptionally high renewable content. is synthesized melt polycondensation, utilizing novel primary feedstock derived from oily residue extracted post‐distillation β‐farnesene (FDR). The ingenious approach involves fermenting sugarcane syrup using genetically engineered yeast strain Saccharomyces cerevisiae . outcome reveals creation amorphous polymer with rubber‐like attributes. These attributes include Young's modulus 3.9 MPa, maximum elastic tensile stress values 185.4% 510 KPa, respectively, along distinctive strain‐hardening characteristics. Remarkably, also exhibits indications shape memory behavior temperature range spanning −47 12°C, discerned dynamic mechanical analysis. Evidently, demonstrates exceptional promise realm low‐temperature applications. Its intrinsic ability uphold integrity, even when subjected substantial deformations its service conditions, positions it invaluable resource for various components requiring resilience challenging environments.

Language: Английский

Bio-based healable thermoset polyurethanes containing dynamic phenol–carbamate bonds derived from quercetin and poly(trimethylene glycol) DOI

Ryuki Kubota,

Mitsuhiro Shibata

Journal of Polymer Research, Journal Year: 2025, Volume and Issue: 32(2)

Published: Feb. 1, 2025

Language: Английский

Citations

1
Rigid polyurethane foams from commercial castor oil resins DOI Creative Commons
Jacopo Lavazza, Qicheng Zhang, Charles de Kergariou

et al.

Polymer Testing, Journal Year: 2024, Volume and Issue: 135, P. 108457 - 108457

Published: May 20, 2024

Rigid polyurethane foams (RPUFs) are among the most used polymeric materials due to their tailorable properties. Greener and biobased polyol sources for synthesising RPUFs have been recently prototyped because of ever-growing demand more sustainable solutions. Castor Oil has also rapidly become one successful alternatives replace fossil-based components. This study extensively investigates three types developed from commercially available Oil-based resins, correlating properties across different length scales. In particular, X-ray diffraction identified a characteristic peak whose intensity correlated with apparent foam density, morphology (obtained computed tomography scans) mechanical Furthermore, quasi-static compression vibration transmissibility tests revealed distinctive anisotropic responses foams, type RPUF consistently outperforming others its lower porosity, reaching 13.3 MPa compressive modulus. These findings demonstrate possibility tuning via compositional control.

Language: Английский

Citations

8
Green polyurethanes from bio-based building blocks: recent advances and applications DOI Creative Commons

Filippo Campana,

Giulia Brufani,

Francesco Mauriello

et al.

Green Synthesis and Catalysis, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 1, 2024

Language: Английский

Citations

7
Thermoset polyurethanes from biobased and recycled components DOI Creative Commons
Eider Mendiburu-Valor, Izaskun Larraza, Oihane Echeverria-Altuna

et al.

Journal of Polymers and the Environment, Journal Year: 2023, Volume and Issue: 31(11), P. 4946 - 4959

Published: June 3, 2023

Abstract In this work, a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer, obtained by glycolysis of marine polyethylene (PET) litter, and biobased polyol derived from castor oil were used for the synthesis thermoset polyurethanes (PUs). BHET was in closed reactor at 220 °C short reaction time 30 min. Different PUs synthesized, varying content, ranging 0 to 21 wt% obtaining renewable carbon content between 23 43%. The synthesized which least 40% their components are recycled, showed an interesting combination thermal, thermo-mechanical mechanical properties. addition, preliminary chemical recycling study performed evaluate recyclability, wrapping whole process within circular economy. glycolyzed product single-phase viscous liquid consisting on polyol-rich BHET-rich fractions, with contents range those employed PUs.

Language: Английский

Citations

10
Bio-Based Self-Healing Epoxy Vitrimers with Dynamic Imine and Disulfide Bonds Derived from Vanillin, Cystamine, and Dimer Diamine DOI Creative Commons

I. Abe,

Mitsuhiro Shibata

Molecules, Journal Year: 2024, Volume and Issue: 29(20), P. 4839 - 4839

Published: Oct. 12, 2024

The condensation reactions of 4,4'-(ethane-1,2-diylbis (oxy)) bis(3-methoxybenzaldehyde) (VV) with cystamine, 1,6-hexamenthylene diamine, and a dimer diamine (Priamine

Language: Английский

Citations

3
Feasibility Assessment of BIO-PUR Composites for Offshore Applications DOI Creative Commons
Oihane Echeverria-Altuna, Pablo Benguria, Ainara Saralegi

et al.

Journal of Polymers and the Environment, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Language: Английский

Citations

0
Self-Healing Thermoset Polyurethanes Driven by Host–Guest Interactions Between α-Cyclodextrin and Poly(ethylene glycol) Monomethyl Ether or Dodecanol Moieties DOI Creative Commons

Ryuji Miyagawa,

Mitsuhiro Shibata

Molecules, Journal Year: 2025, Volume and Issue: 30(9), P. 1941 - 1941

Published: April 27, 2025

Self-healing thermoset polymers have attracted significant attention because they contribute to resource and energy savings by extending their service life. The reactions between glycerol ethoxylate (GCE), α-cyclodextrin (α-CD), poly(ethylene glycol) monomethyl ether (MPEG), hexamethylene diisocyanate (HDI) at molar ratios of GCE:α-CD:MPEG = a:b:c produced polyurethane networks (GCM-abc, abc 311, 411, 511) containing α-CD MPEG as host guest moieties, respectively. To compare this with GCM-411, 1-dodecanol (DN) was used instead a molecule yield network (GCD-411). Dynamic mechanical analysis revealed the formation polymer network, loss tangent (tan δ) peak temperature (Tα) crosslinking density (νe) decreased increasing GCE fraction for GCMs, Tα νe values GCD were slightly higher than those GCM-411. tensile strength GCMs fraction, GCD-411 that All cured films healed room 24 h, healing efficiency (ησ), based on strength, increased in order GCM-311 < GCM-411 GCM-511 GCD-411. When from 80 °C, ησ 24-38% 45-62%. self-healed thrice treatment gradually each cycle.

Language: Английский

Citations

0
Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols DOI
Xinyu Wang,

Zefei Yuan,

Xueyi Pan

et al.

ACS Applied Polymer Materials, Journal Year: 2023, Volume and Issue: 5(9), P. 7308 - 7317

Published: Aug. 22, 2023

Due to the exhaustion of fossil resources and degradation environment, there is an increasing utilization eco-friendly materials as substitutes for petroleum-derived materials. In this work, a series poly(ε-caprolactone-co-lactic acid) diols were synthesized via one-pot ring-opening polymerization with different lactic acid (LA)/ε-caprolactone (CL) feed ratios. Subsequently, mixed polyether diol, 4,4′-diphenylmethane diisocyanate (MDI), other additives produce polyurethane reactive hot-melt adhesives (PURHAs). The enhancement LA/CL ratios correspondingly led increase in glass transition temperature (Tg) polyester diols. differential scanning calorimetry (DSC) data demonstrated that PCL-diol had highest crystallinity, polarizing optical microscopy (POM) observations revealed smallest spherulite size PCLA28-diol. Thermogravimetric analysis (TGA) results indicated 5 wt % loss (T5) PURHAs surpassed 265 °C. Tensile testing showed elongation at break containing PCL segments increased by least eight times compared PURHA without segments. Lap-shear illustrated higher ratio exhibits green strength. addition, PUHRA-PCLA28 derived from PCLA28-diol PUHRA-PCL possessed better tensile lap-shear strengths. Notably, strengths on PC substrate reached impressive values 8.85 8.05 MPa, respectively. These bio-based show potential applications electronic appliances, automotive industry, construction

Language: Английский

Citations

8
Development of BioPolyurethane Coatings from Biomass-Derived Alkylphenol Polyols—A Green Alternative DOI Open Access
Tiago A.R. Silva, Ana C. Marques, Rui Galhano dos Santos

et al.

Polymers, Journal Year: 2023, Volume and Issue: 15(11), P. 2561 - 2561

Published: June 2, 2023

Bio-based polyols were obtained from the thermochemical liquefaction of two biomass feedstocks, pinewood and Stipa tenacissima, with conversion rates varying between 71.9 79.3 wt.%, comprehensively characterized. They exhibit phenolic aliphatic moieties displaying hydroxyl (OH) functional groups, as confirmed by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) nuclear magnetic resonance (NMR) analysis. The biopolyols successfully employed a green raw material to produce bio-based polyurethane (BioPU) coatings on carbon steel substrates, using, an isocyanate source, commercial polyisocyanate-Desmodur® Eco N7300. BioPU analyzed in terms chemical structure, extent reaction species, thermal stability, hydrophobicity, adhesion strength. show moderate stability at temperatures up 100 °C, mild contact angles 68° 86°. tests reveal similar pull-off strength values (ca. 2.2 MPa) for either prepared Stipa-derived (BPUI BPUII). Electrochemical impedance (EIS) measurements carried out coated substrates 60 days 0.05 M NaCl solution. Good corrosion protection properties achieved coatings, particular emphasis coating pinewood-derived polyol, which exhibited low-frequency modulus normalized thickness 6.1 × 1010 Ω cm end test, three times higher than biopolyols. produced formulations great potential application further modification fillers inhibitors.

Language: Английский

Citations

8
Elucidating the Impact of Polyol Functional Moieties on Exothermic Poly(urethane-urea) Polymerization: A Thermo-Kinetic Simulation Approach DOI Open Access
Leanne Christie C. Mendija, Roger G. Dingcong, Fortia Louise Adeliene M. Alfeche

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(11), P. 4587 - 4587

Published: May 28, 2024

The pursuit of sustainable polyurethane (PU) product development necessitates a profound understanding precursor materials. Particularly, polyol plays crucial role, since PU properties are heavily influenced by the type employed during production. While traditional PUs solely derived from hydroxyl functionalized polyols, emergence amine-hydroxyl hybrid polyols has garnered significant attention due to their potential for enhancing properties. These characterized presence both amine and functional groups. However, characterizing these remains daunting challenge lack established experimental testing standards properties, such as fractional moieties thermo-kinetic parameters reactions with isocyanates. Additionally, characterization methods demand extensive time resources pose risks health environment. To bridge gaps, this study computational simulation via MATLAB determine moieties’ fractions polyols. method integrated energy balance reaction kinetics analysis various elucidate influence on behavior formations. Validation simulated results was conducted comparing prepolymer foam temperature profiles, highlighting direct comparisons revealed an average relative error less than 5%, indicating accuracy credibility simulation. Thus, represents pivotal opportunity advancing knowledge driving developments in bio-based production streamlining formulation optimization.

Language: Английский

Citations

2