Soft‐Segment Containing Lignin‐Based Polyhydroxyurethanes: Controllable Flexibility Through PDMS Integration DOI

Lily Masa,

Arijit Ghorai, Hoyong Chung

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Abstract Lignin, a biomass‐derived polymer, is rich in aromatic groups composed of phenylpropane units, providing rigidity, thermal stability, and mechanical strength ideal for structural applications. However, its inherent stiffness limits flexibility. To address this, lignin copolymerized with bis(3‐aminopropyl)‐terminated poly(dimethylsiloxane) (PDMS‐NH 2 ), introducing tunable elasticity improved properties. Lignin first modified CO₂ to produce cyclic carbonate‐functionalized (CCL). The CCL reacts PDMS‐NH amines via the ring‐opening carbonates, forming soft‐hard polyhydroxyurethane copolymers adjustable properties (CCL‐PDMS‐PHUs). Structural characterization confirms urethane bond formation, peaks at 1680 cm⁻¹ (FT‐IR) chemical shifts 161.33 ppm (¹ 3 C NMR) 7.99 (¹H NMR). Thermal analysis reveals 5% decomposition temperatures 246–265 °C glass transition (Tg) ranging from 44 66 °C, indicating stability. Mechanical testing shows that CCL‐PDMS‐PHU60 (60% ) exhibited greater softness, while CCL‐PDMS‐PHU40 (40% displayed higher stiffness, highlighting ’s effect on These results demonstrate CCL‐PDMS‐PHUs offer customizable properties, making them promising materials applications requiring tailored performance.

Language: Английский

Evolution of Copolymers of Epoxides and CO2: Catalysts, Monomers, Architectures, and Applications DOI
Guan‐Wen Yang, Rui Xie, Yao‐Yao Zhang

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 25, 2024

The copolymerization of CO

Language: Английский

Citations

13
Closed-loop recyclable polymers: from monomer and polymer design to the polymerization–depolymerization cycle DOI

Shuaiqi Yang,

Shuai Du,

Jin Zhu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(19), P. 9609 - 9651

Published: Jan. 1, 2024

We present the state-of-the-art of circular polymers based on monomer and polymer design reversible ring-opening addition polymerization reactions without involvement other reactants.

Language: Английский

Citations

9
Multifunctional bio-aerogels realized by solvophilic phase assisted phase separation for passive radiative cooling and energy harvesting DOI
Yameng Wang, Feifei Zhang,

Zewei Hou

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162059 - 162059

Published: April 1, 2025

Language: Английский

Citations

0
Soft‐Segment Containing Lignin‐Based Polyhydroxyurethanes: Controllable Flexibility Through PDMS Integration DOI

Lily Masa,

Arijit Ghorai, Hoyong Chung

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Abstract Lignin, a biomass‐derived polymer, is rich in aromatic groups composed of phenylpropane units, providing rigidity, thermal stability, and mechanical strength ideal for structural applications. However, its inherent stiffness limits flexibility. To address this, lignin copolymerized with bis(3‐aminopropyl)‐terminated poly(dimethylsiloxane) (PDMS‐NH 2 ), introducing tunable elasticity improved properties. Lignin first modified CO₂ to produce cyclic carbonate‐functionalized (CCL). The CCL reacts PDMS‐NH amines via the ring‐opening carbonates, forming soft‐hard polyhydroxyurethane copolymers adjustable properties (CCL‐PDMS‐PHUs). Structural characterization confirms urethane bond formation, peaks at 1680 cm⁻¹ (FT‐IR) chemical shifts 161.33 ppm (¹ 3 C NMR) 7.99 (¹H NMR). Thermal analysis reveals 5% decomposition temperatures 246–265 °C glass transition (Tg) ranging from 44 66 °C, indicating stability. Mechanical testing shows that CCL‐PDMS‐PHU60 (60% ) exhibited greater softness, while CCL‐PDMS‐PHU40 (40% displayed higher stiffness, highlighting ’s effect on These results demonstrate CCL‐PDMS‐PHUs offer customizable properties, making them promising materials applications requiring tailored performance.

Language: Английский

Citations

0