Synthesis of Vanillin-Based Polyurethane with Super Thermal Stability and Free-Radical-Scavenging Activity DOI
Weijun Yang,

Binbao Lu,

Débora Puglia

et al.

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

This work focuses on designing biobased polyurethane systems possessing intrinsic free radical scavenging activity (RSA), exceptional toughness, and thermal stability. Initially, divanillyl alcohol (DVO) was synthesized through oxidative coupling activation of the vanillin precursor, followed by reduction aldehyde groups. Subsequently, polyurethanes denoted as RSPU-x (where x is molar ratio DVO) were synthesized, using polycaprolactone diol (OH-PCL–OH) soft segment isophorone diisocyanate (IPDI) along with DVO hard segments. With an increase in content from 0 to 0.25, stability mechanical properties significantly enhanced. Specifically, maximum decomposition temperature rose 317 417 °C, while toughness shot up 38.1 MJ/m3 223.9 MJ/m3. The improvement attributed biphenyl structure DVO, which has high bond dissociation energy activity, enhanced primarily results introduction rigid skeleton, disrupts regularity PCL chains, thereby inhibiting crystallization behavior. Additionally, also exhibited inherent due presence Ar–OH groups skeletons. RSA RSPU-0.25 (DPPH ABTS tests) reached, respectively, 94.21% 99.24% within 0.5 h, achieved via H+ transfer mechanism. presents a novel strategy for preparing properties.

Language: Английский

Preparation of vanillin-based polyurethane/SiO2 nanocomposite foams with excellent flame retardancy and thermal insulation performance DOI
Ning Ding, Yi Yang, Rui Zhang

et al.

Composites Communications, Journal Year: 2024, Volume and Issue: unknown, P. 102108 - 102108

Published: Sept. 1, 2024

Language: Английский

Citations

5
Crystallinity and Liquid Crystallinity of Polyurethanes: How Tailoring of Order Contributes to Customized Properties and Applications DOI Open Access
Artur Bukowczan, Konstantinos N. Raftopoulos, Krzysztof Pielichowski

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 784 - 784

Published: March 15, 2025

Studies on polyurethane (PU) materials offer advantageous properties utilized in various applications. The complex nature of the PUs structure and morphology gives them unique properties, but at same time poses a considerable challenge for characterization design structure–property relationships. Polyurethanes with tailored crystallinity can exhibit peculiar resistance to mechanical chemical factors, allowing widening range application. Liquid crystalline polyurethanes have gained renewed interest thanks development research methodologies new possibilities modifying diol isocyanate monomers. study shows that liquid crystal phenomena be effectively used polymer compatibilization, fiber nanofibers applications, as well ‘smart’ multi-stimuli materials.

Language: Английский

Citations

0
Multiple synergistic effects of copper salicylaldehyde-modified P-N inorganic-organic hybrid in enhancing flame retardancy, smoke suppression, and anti-dripping properties of TPU DOI

Gaoyuan Li,

Haopeng Zhang, Jianmin Qu

et al.

Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: unknown, P. 111136 - 111136

Published: Dec. 1, 2024

Language: Английский

Citations

2
From a bio-based polyphenol diol intermedia to high-performance polyurethane elastomer: Thermal stability, reprocessability and flame retardancy DOI
Ning Ding, Yi Yang,

Binbao Lu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 680, P. 608 - 617

Published: Nov. 5, 2024

Language: Английский

Citations

1
Regulating Cross-Linking Structure and Dispersion of Core-Shell-Rubber Particles in Polyurethane Composite to Achieve Excellent Mechanical Properties for Structural Adhesive Application DOI Open Access

Zijin Jiang,

Lingtong Li,

Luoping Fu

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3263 - 3263

Published: Nov. 23, 2024

Structural adhesives are bonding materials that can quickly join structures with components and repair cracks. However, thermosetting polyurethane structural suffer from disadvantages such as insufficient toughness, poor aging resistance, long curing time, which greatly limit their practical application. Herein, a (PU) composite excellent mechanical properties was prepared successfully via regulating the cross-linking structure dispersion of core-shell-rubber (CSR) particles. Various polyols were selected to improve density PU enhance intermolecular forces, achieve high strength stability composites. Solvent displacement used CSR in PU. The cured has ultra-high toughness impact resistance due well-dispersed increased 52.0 90.4 kJ/m2, elongation at break 6.1% 14.9%. Due addition catalyst T120, this be room temperature, reaching after 30 min. In addition, these composites resist extreme environments, low temperature changes, UV aging, humidity heat environment, salt spray potential value for adhesive meet requirements transit production efficiency. This work proposed novel strategy prepare

Language: Английский

Citations

1
Solvent-free preparation of carbon fiber reinforced dynamically cross-linked vanillin-based polyurethane composites with excellent self-healing and closed-loop recycling performance DOI

Zhiwen Jian,

Xili Lu, Zhanhua Wang

et al.

Polymer, Journal Year: 2024, Volume and Issue: 312, P. 127618 - 127618

Published: Sept. 10, 2024

Language: Английский

Citations

0
Straightforwardly-Prepared Waterborne Polyurethane Microspheres with Superior Matting Properties by Calcium Ion-Coordinated Coagulation DOI

Xinyuan Xue,

Xingyuan Ma, Lin Lu

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: 41, P. 110993 - 110993

Published: Nov. 14, 2024

Language: Английский

Citations

0
Synthesis of Vanillin-Based Polyurethane with Super Thermal Stability and Free-Radical-Scavenging Activity DOI
Weijun Yang,

Binbao Lu,

Débora Puglia

et al.

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

This work focuses on designing biobased polyurethane systems possessing intrinsic free radical scavenging activity (RSA), exceptional toughness, and thermal stability. Initially, divanillyl alcohol (DVO) was synthesized through oxidative coupling activation of the vanillin precursor, followed by reduction aldehyde groups. Subsequently, polyurethanes denoted as RSPU-x (where x is molar ratio DVO) were synthesized, using polycaprolactone diol (OH-PCL–OH) soft segment isophorone diisocyanate (IPDI) along with DVO hard segments. With an increase in content from 0 to 0.25, stability mechanical properties significantly enhanced. Specifically, maximum decomposition temperature rose 317 417 °C, while toughness shot up 38.1 MJ/m3 223.9 MJ/m3. The improvement attributed biphenyl structure DVO, which has high bond dissociation energy activity, enhanced primarily results introduction rigid skeleton, disrupts regularity PCL chains, thereby inhibiting crystallization behavior. Additionally, also exhibited inherent due presence Ar–OH groups skeletons. RSA RSPU-0.25 (DPPH ABTS tests) reached, respectively, 94.21% 99.24% within 0.5 h, achieved via H+ transfer mechanism. presents a novel strategy for preparing properties.

Language: Английский

Citations

0