Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication DOI
Melissa B. Agustin, Paavo A. Penttilä, Maarit H. Lahtinen

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2019, Volume and Issue: 7(24), P. 19925 - 19934

Published: Nov. 13, 2019

The production of lignin nanoparticles (LNPs) has opened new routes to the utilization in advanced applications. existing challenge, however, is develop a method that can easily be adapted on an industrial scale. In this study, we demonstrated green and rapid preparing LNPs directly from sulfur-free alkaline pulping liquor by combining acid precipitation ultrasonication. combined produced spherical LNPs, with hierarchical nanostructure highly negative surface charge, within only 5 min sonication. mild, sonication was achieved sonicating without prior drying acid-precipitated dialyzed lignin. Optimization revealed potential for minimizing consumption, shortening dialysis time, processing as much 20 wt % isolated were stable during storage 180 days, at pH range 4–7, dispersing medium below 0.1 M NaCl. also displayed excellent emulsifying properties, stabilizing oil-in-water emulsions. Thus, simple energy-efficient opens sustainable, straightforward, scalable route organic solvent-free high interface stabilizers multiphase systems food medical industries.

Language: Английский

Molecular-level driving forces in lignocellulosic biomass deconstruction for bioenergy DOI
Loukas Petridis, Jeremy C. Smith

Nature Reviews Chemistry, Journal Year: 2018, Volume and Issue: 2(11), P. 382 - 389

Published: Oct. 18, 2018

Language: Английский

Citations

155
Atomic Force Microscopy and Molecular Dynamics Simulations for Study of Lignin Solution Self‐Assembly Mechanisms in Organic–Aqueous Solvent Mixtures DOI
Jingyu Wang, Yong Qian, Libo Li

et al.

ChemSusChem, Journal Year: 2020, Volume and Issue: 13(17), P. 4420 - 4427

Published: Jan. 17, 2020

Abstract Lignin‐based nanomaterials fabricated by solution self‐assembly in organic–aqueous solvent mixtures are among the most attractive biomass‐derived products. To accurately control structure, size, and properties of lignin‐based nanomaterials, it is important to achieve fundamental understanding its dissolution aggregation mechanisms. In this work, atomic force microscopy (AFM) molecular dynamics (MD) simulations employed explore behavior enzymatic hydrolysis lignin (EHL) different at scale. EHL was found dissolve well appropriate mixtures, such as acetone–water mixture with a volume ratio 7:3, whereas aggregated pure water, ethanol, acetone, tetrahydrofuran. The interactions between EHL‐coated AFM probe substrate were 1.21±0.18 0.75±0.35 m N −1 water respectively. comparison, interaction decreased 0.15±0.08 (7:3 v / ). MD further indicate that hydrophobic skeleton hydrophilic groups could be solvated acetone molecules, respectively, which significantly promoted dissolution. Conversely, only or organic inducing serious lignin.

Language: Английский

Citations

139
Encapsulating TiO2 in Lignin-Based Colloidal Spheres for High Sunscreen Performance and Weak Photocatalytic Activity DOI
Yuanyuan Li, Dongjie Yang,

Shuo Lu

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2019, Volume and Issue: 7(6), P. 6234 - 6242

Published: Feb. 18, 2019

TiO2 is widely used in cosmetic products but its poor dispersibility and photocatalytic degradation hazard still affect performance. In this work, quaternized alkali lignin (QAL) applied to encapsulate by self-assembly endows with excellent sunscreen performance safety. Results show that the nano particles were well trapped colloidal spheres (LCS) via hydrogen bonding. The LCS encapsulated (LCS@TiO2) had a water contact angle as high 89° comparison only 22° disk control sample. Thus, compatibility hydrophobic cream was improved. activity of could be effectively eliminated after modification. dark color QAL significantly whitened TiO2. When ratio (w/w) 0.5, LCS@TiO2 presented best synergistic effect; sun protection factor (SPF) value containing 25 wt % reached 84.82.

Language: Английский

Citations

107
A lignin-containing cellulose hydrogel for lignin fractionation DOI
Lin Dai, Weiyan Zhu,

Jinshun Lü

et al.

Green Chemistry, Journal Year: 2019, Volume and Issue: 21(19), P. 5222 - 5230

Published: Jan. 1, 2019

A novel lignin-containing hydrogel-assisted technology offers a promising green approach for lignin fractionation.

Language: Английский

Citations

103
Rapid and Direct Preparation of Lignin Nanoparticles from Alkaline Pulping Liquor by Mild Ultrasonication DOI
Melissa B. Agustin, Paavo A. Penttilä, Maarit H. Lahtinen

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2019, Volume and Issue: 7(24), P. 19925 - 19934

Published: Nov. 13, 2019

The production of lignin nanoparticles (LNPs) has opened new routes to the utilization in advanced applications. existing challenge, however, is develop a method that can easily be adapted on an industrial scale. In this study, we demonstrated green and rapid preparing LNPs directly from sulfur-free alkaline pulping liquor by combining acid precipitation ultrasonication. combined produced spherical LNPs, with hierarchical nanostructure highly negative surface charge, within only 5 min sonication. mild, sonication was achieved sonicating without prior drying acid-precipitated dialyzed lignin. Optimization revealed potential for minimizing consumption, shortening dialysis time, processing as much 20 wt % isolated were stable during storage 180 days, at pH range 4–7, dispersing medium below 0.1 M NaCl. also displayed excellent emulsifying properties, stabilizing oil-in-water emulsions. Thus, simple energy-efficient opens sustainable, straightforward, scalable route organic solvent-free high interface stabilizers multiphase systems food medical industries.

Language: Английский

Citations

103