Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 205, P. 106070 - 106070
Published: Oct. 13, 2024
Language: Английский
Materials Today Communications, Journal Year: 2024, Volume and Issue: 39, P. 109172 - 109172
Published: May 10, 2024
Language: Английский
Citations
11
Carbohydrate Polymers, Journal Year: 2023, Volume and Issue: 326, P. 121606 - 121606
Published: Nov. 24, 2023
Language: Английский
Citations
12
Polymer Engineering and Science, Journal Year: 2024, Volume and Issue: 64(9), P. 4234 - 4245
Published: June 17, 2024
Abstract Traditional adhesives made using urea or phenol formaldehyde are toxic to humans and the environment, as a result, industry is very interested in developing bio‐based adhesives. Polyurethane (PU)‐based attractive due their strong bonding strength, thermal chemical stability. Polyols derived from petrochemicals one of most important constituents PU‐based Current trends find an alternative for petrochemical‐based polyols without compromising characteristics In this research, PU were prepared soybean oil‐based polyol isocyanate. Three different diols such 1,2‐ethanediol (EDO), 1,4‐butanediol (BDO), 1,6‐hexanediol (HDO) used study effect crosslinking, amount crosslinkers (diols), diol's chain length on properties The adhesive's lap shear strength metallic wood coupons was measured. BDO‐based bio‐adhesives showed best compared EDO HDO mechanical observed be increasing with increase up certain concentration then started decreasing. On oakwood, increased 3 6.36 MPa after incorporating 10 wt% BDO which highest among all other stability these also studied. Structural characterization confirms no significant changes being immersed solvents 24 h. This work introduces sustainable petroleum‐based vegetable oil. Highlights Soybean 1,2‐Ethanediol, 1,4‐butanediol, crosslinkers. measured coupons. diols. observed.
Language: Английский
Citations
4
European Polymer Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113814 - 113814
Published: Feb. 1, 2025
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 28, 2025
2-Pyrone-4,6-dicarboxylic acid (PDC) can be produced on a large scale from lignin by transformed bacteria, and its use as bifunctional monomer to synthesize biomass-based polymers has been reported. Recently, excellent adhesive properties of the resulting were also reported, but their performance not yet optimized. In this study, we focus improving PDC-based polyurethanes (PUs) combining experiments machine learning (ML). We synthesized an initial data set 25 samples different polyols isocyanates with isocyanate-to-hydroxyl ratios (r). Adhesive strengths measured after hot-pressing at varying temperatures (Theat, °C) durations (theat, h), following Taguchi L25 orthogonal design. Gaussian process-based Bayesian optimization (BO) was employed identify optimal PU function polyol type, isocyanate r ratio, heating temperature, time improved strength 10.04 ± 1.26 MPa only five iterations. This approach highlights effectiveness BO in guiding experimental conditions for enhanced performance. Random Forest regression used alternative ML supported conclusions. Overall, study demonstrates potential accelerating development novel materials.
Language: Английский
Citations
0
Materials Today Chemistry, Journal Year: 2023, Volume and Issue: 34, P. 101822 - 101822
Published: Nov. 22, 2023
Currently, the resins used in industrial polyurethane coatings are made from petro-based polyols and isocyanate building blocks. In traditional coating formulations, can be solubilized solvents for their application on substrates, thus releasing possibly volatile organic compounds (VOCs) upon drying. To circumvent these issues, polyurethanes synthesized non-isocyanate bio-based blocks receiving more interest. However, only few references describe development of waterborne dispersions with a direct application. this study, polyurethane(urea)s very high contents (>80 wt%) having controlled amount reactive hydroxyl ends were via transcarbamoylation. The obtained as cationic sustainable system. influence functionality hydrophobicity neutralization agent to protonate polyurethane(urea) backbones, well dicarbamate monomer structures assessed. It was found that combination monofunctional hydrophilic dl-lactic acid (for electrostatic repulsion) led stable better properties (particle size zeta potential) than commercial dispersion reference. Those cross-linked through end groups tetramethylol acetylene diurea into freestanding films adhesive layers textile coatings. exhibited cross-linking efficiency (gel content >90 %), low water uptake (down 2 %) methyl ethyl ketone (MEK) resistance (≥200 rubs) good mechanical (Young's modulus between 1.5 MPa 3.1 elongation at break up 300 resist deformation fabrics when applied them. Finally, an layer textiles, hydrolysis heat aging ensured by system, potentially replacing based layers.
Language: Английский
Citations
7
Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 192, P. 108508 - 108508
Published: May 12, 2024
Language: Английский
Citations
2
Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 205, P. 106070 - 106070
Published: Oct. 13, 2024
Language: Английский
Citations
1