Effect of the biobased polyols chemical structure on high performance thermoset polyurethane properties

Echeverria-Altuna, Oihane; Ollo, O.; Larraza, Izaskun; Harismendy, I.; Eceiza, Arantxa

doi:10.1016/j.polymer.2022.125515

Cited by 18 publications

(6 citation statements)

References 43 publications

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“…The combination of low hydroxyl value and high molecular weight for the polyol leads to a functionality of 4.0, typical of bio‐based polyols 44 …”

Section: Resultsmentioning

confidence: 99%

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Synthesis of thermoset elastomer from microbial oil derived from the fermentation of sugarcane

Capeto,

Uribe,

Pintado

et al. 2023

J of Applied Polymer Sci

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

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“…The combination of low hydroxyl value and high molecular weight for the polyol leads to a functionality of 4.0, typical of bio‐based polyols 44 …”

Section: Resultsmentioning

confidence: 99%

“…43 The combination of low hydroxyl value and high molecular weight for the polyol leads to a functionality of 4.0, typical of bio-based polyols. 44 PES profile showed all the bands typical of aromatic polyesters. 45 The sharp peaks around 1721 and 1264 cm À1 are appointed to aromatic C O and C C O stretches.…”

Section: Chemical-physical and Structural Analysismentioning

confidence: 98%

Synthesis of thermoset elastomer from microbial oil derived from the fermentation of sugarcane

Capeto,

Uribe,

Pintado

et al. 2023

J of Applied Polymer Sci

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“…The incorporation of natural oils in polyol synthesis is generally associated with some di culties in the formulation of polyurethane foams due to their functionality, high viscosity, and low hydroxyl numbers that may affect foam properties like stability, strength, and glass transition. [39,40]. However, the material has a versatile composition, is biodegradable, non-toxic, and environmentally friendly [41].…”

Section: Scba Characterizationmentioning

confidence: 99%

Fire-resistant bio-based polyurethane foams designed with two by-products derived from sugarcane fermentation process

Capêto

Sousa

Costa

et al. 2023

Preprint

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There is a great interest in replacing conventional fossil-based polymers and composites with inorganic or organic waste-based materials and filler-type additives, to promote environmental sustainability and circularity. The main objective of this study was the design of water-blown polyurethane rigid foams integrating two by-products derived from the Amyris fermentation process of production of β-farnesene. The distillation residue (FDR) was used as main polyol component in the neat formulation of the foams (PF) that it was supplemented (PFA) with 4.5% of sugarcane bagasse ash (SCBA) added as a filler with fire-retardant properties. The impact of both by-products on the foam density and morphology, and in the thermal, mechanical, and flame-retardant properties was assessed. SCBA presence led to a reduction in apparent density, cells size, and glass transition, delaying the thermal decomposition. The differences observed in the thermal conductivity and flammability test parameters suggest a visible impact of the ash incorporation, thus meeting the fire protection standard UL 94, class HB. Highlighting the need for further optimization, this work presents a practical example of the integration of different wastes derived from the same fermentation process in the formulation of sustainable PUR foams with reduced flammability.

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“…7,10,11 However, most raw materials required to synthesize polyurethane resins are petroleum-based and nonrenewable, unfavorable for achieving the carbon neutrality target. 12 Consequently, there has been extensive research on the utilization of bio-based raw materials such as castor oil, 13 soybean oil, 14 lignin, 15 isosorbide, 16 and 1,3-propanediol to 7 obtain bio-based PURHAs. For example, Santan et al 17 presented a simple way for preparing a solvent-free castor oilbased polyurethane adhesive with adjustable properties.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols

Wang,

Yuan,

Pan

et al. 2023

ACS Appl. Polym. Mater.

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

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Effect of the biobased polyols chemical structure on high performance thermoset polyurethane properties

Cited by 18 publications

References 43 publications

Synthesis of thermoset elastomer from microbial oil derived from the fermentation of sugarcane

Synthesis of thermoset elastomer from microbial oil derived from the fermentation of sugarcane

Fire-resistant bio-based polyurethane foams designed with two by-products derived from sugarcane fermentation process

Eco-Friendly Polyurethane Reactive Hot-Melt Adhesive Derived from Poly(ε-caprolactone-co-lactic acid) Diols

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