Bio-based materials with special wettability for oil-water separation

Separation and Purification Technology, Journal Year: 2022, Volume and Issue: 297, P. 121445 - 121445

Published: June 7, 2022

Language: Английский

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The role of surface functional groups of pectin and pectin-based materials on the adsorption of heavy metal ions and dyes

Carbohydrate Polymers, Journal Year: 2021, Volume and Issue: 276, P. 118789 - 118789

Published: Oct. 25, 2021

Language: Английский

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Application of lignin adsorbent in wastewater Treatment: A review

Separation and Purification Technology, Journal Year: 2022, Volume and Issue: 302, P. 122116 - 122116

Published: Sept. 16, 2022

Language: Английский

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Antimicrobial Lignin-Based Polyurethane/Ag Composite Foams for Improving Wound Healing

Biomacromolecules, Journal Year: 2022, Volume and Issue: 23(4), P. 1622 - 1632

Published: Feb. 1, 2022

Antimicrobial materials are an urgent need for modern wound care in the clinic. Although traditional polyurethane foams have proven to be clinically valuable treatment, their petroleum-originated preparation and bioinert nature restricted efficacy biomedical applications. Here, we propose a simple one-step foaming method prepare lignin-based (LPUFs) which fully biobased polyether polyols partially replace petroleum-based raw materials. The trace amount of phenolic hydroxyl groups (about 4 mmol) liquefied lignin acts as direct reducing agent capping silver ions (less than 0.3 mmol), situ forming nanoparticles (Ag NPs) within LPUF skeleton. This newly proposed polyurethane/Ag composite foam (named Ag NP-LPUF) shows improved mechanical, thermal, antibacterial properties. It is worth mentioning that NP-LPUF exhibits more 99% rate against Escherichia coli 1 h Staphylococcus aureus h. Evaluations mice indicate antimicrobial can effectively promote healing full-thickness skin defects. As proof concept, this biodegradable significant potential clinical translation dressings.

Language: Английский

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Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 445, P. 130541 - 130541

Published: Dec. 5, 2022

Language: Английский

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Multifunctional superhydrophilic/underwater superoleophobic lignin-based polyurethane foam for highly efficient oil-water separation and water purification

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 311, P. 123284 - 123284

Published: Jan. 26, 2023

Language: Английский

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Fully biomass-derived polyurethane based on dynamic imine with self-healing, rapid degradability, and editable shape memory capabilities

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147823 - 147823

Published: Dec. 3, 2023

Language: Английский

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Ultrastrong and Thermo‐Remoldable Lignin‐Based Polyurethane Foam Insulation with Active‐Passive Fire Resistance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(40)

Published: June 19, 2024

Abstract Foam thermal insulators are indispensable for prevailing energy‐saving engineering, however their widespread use brings intractability such as unsustainability, “white pollution”, and fire hazards. The emergence of bio‐based foams is highly appreciated, but the fabrication approaches economically unattractive and/or product properties inferior, making large‐scale implementation unviable. Herein, a versatile, thermally remoldable phosphate‐containing polyurethane composite foam (LPU‐G) constructed from natural lignin expanded graphite flakes via an atmospheric pressure scalable one‐pot strategy. optimal LPU‐G exhibits exceptional mechanical strength, capable supporting over 6000 times its weight without significant deformation. Moreover, demonstrates desired multifunctionality in handling extreme circumstances, including humidity‐tolerant insulation, superb water vapor barrier, withstanding ≈1200 °C flame ignition. Based on “expansion‐conductivity” micro‐mechanism, first material to be sensitive alarm system with ultra‐long time (>1800 s). Surprisingly, can rapidly upcycled into recyclable bulk composites second life through simple thermo‐molding processes rooted multi‐dynamic behavior phosphate, carbamate, hydrogen bonds. easy‐to‐scale represents new generation that address concerns regarding high cost, risk, inferior properties.

Language: Английский

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Antimicrobial Nonisocyanate Polyurethane Foam Derived from Lignin for Wound Healing

ACS Applied Bio Materials, Journal Year: 2024, Volume and Issue: 7(2), P. 1301 - 1310

Published: Feb. 2, 2024

Medical dressings, as a cover for wounds, can replace damaged skin in the wound healing process to play temporary barrier role, avoid or control infection, and provide favorable environment healing. Therefore, there is an urgent need medical antimicrobial dressings treatment of chronic wounds. Although traditional polyurethane foam has been widely used conventional foams are primarily prepared using nonbiocompatible isocyanate-based compounds, which potentially hazardous both operators applications field. Here, we propose nonisocyanate naturally derived from lignin by enzymatic alkylation, cyclic carbonation modification, polymerization with diamine addition blowing agent. Silver nanoparticle solution was added during foaming confer properties. This lignin-based polyurethane/silver composite (named NIPU foam-silver) green synthesis method good mechanical properties, be manufacture foams, thermal Notably, foam-Ag showed more than 95% bactericidal efficacy against Escherichia coli Staphylococcus aureus within 4 h. Evaluation vitro wounds mice that this rapidly promotes repairs tissue. suggests biobased biodegradable significant scope clinical management.

Language: Английский

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Porous lignin-based composites for oil/water separation: A review

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 260, P. 129569 - 129569

Published: Jan. 20, 2024

Language: Английский

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