Preparation, structure, and properties of poly(ethyleneoxide)/lignin composites used for UV absorption

Wu, Ruguang; Wang, Shiwei; Leng, Yuting; Li, Qian

doi:10.1002/app.48593

Cited by 14 publications

(11 citation statements)

References 46 publications

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“…The dispersion of lignin improved by maleic anhydride and triethyl citrate and the good dispersion of lignin in PBS increased the mechanical properties of the composite. Wu et al mixed lignin with poly(ethylene oxide) (PEO), a hydrophilic polymer, with the weight ratios of 5:1, 10:1, and 15:1. Due to the addition of lignin and regardless of the weight ratio, the UV-shielding properties of all three lignin/PEO composites increased approximately 5 times compared to the pure PEO.…”

Section: Lignin Composite As Uv-shielding Materialsmentioning

confidence: 99%

Lignin: A Review on Structure, Properties, and Applications as a Light-Colored UV Absorber

Zhang

Naebe

2021

ACS Sustainable Chem. Eng.

230

120

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Lignin is a promising UV-shielding material to substitute the synthetic absorbers in a composite due to its excellent UV-shielding property. The chromophores group of lignin is responsible for the UV-shielding property of composites, but it brings an undesirable dark color. This perspective is the first to review the recent progress on fabricating light-colored UVshielding composites that contain lignin; we provide a clear picture of the concept of light-colored UV-absorbing lignin composite materials that can be used in food packaging, healthcare products, and solar panel protection. The UV-absorbing and photostability mechanisms are introduced by correlating UV absorption with intrinsic factors, like phenolic substructures and molecular weight of lignin. Extrinsic factors that affect the UV-shielding properties and color of lignin, such as the extraction process, chemical modification method, and obtained size of lignin, are also systematically discussed in this perspective. By summarizing recent studies on the synergetic effect between the lignin and the second constitute materials, this perspective discusses the benefits of lignin to the composite's overall properties, such as stability under UV radiation, mechanical property, dispersity, and water permeability.

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Section: Lignin Composite As Uv-shielding Materialsmentioning

confidence: 99%

Lignin: A Review on Structure, Properties, and Applications as a Light-Colored UV Absorber

Zhang

Naebe

2021

ACS Sustainable Chem. Eng.

230

120

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“…Lignin, the second most abundant plant-derived natural polymer after cellulose, is heterogeneous and amorphous in nature , and exhibits numerous attractive properties, such as antioxidant activity and favorable stiffness beside being renewable and biodegradable . Lignin had been blended physically or cross-linked with other polymers to produce composites in forms of thermoset resins, , thermoplastics, , foams, and adhesives. , However, the performance of lignin-containing composites as high value-added materials are often limited by their particle size and irregular morphology …”

Section: Introductionmentioning

confidence: 99%

Acetone/Water Cosolvent Approach to Lignin Nanoparticles with Controllable Size and Their Applications for Pickering Emulsions

Shen

Wang

et al. 2021

ACS Sustainable Chem. Eng.

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In this study, we showed that lignin nanoparticles (LNPs) with controllable size could be prepared using the acetone/water cosolvent (A/W) approach. The solubility of lignin in A/W of varied constitution (10:0 to 0:10 v/v) was determined, and A/W containing 7:3 (v/v) acetone to water was identified as the optimum solvent. A positive correlation between LNP size and lignin concentration was observed, with the smallest LNPs (28.5 ± 5.4 nm) obtained at 5.00 g/L of lignin, while serious aggregation occurred at lignin concentrations above 100 g/L. The rotary evaporation procedure used to remove acetone had no noticeable effect on the size of LNPs. The obtained LNPs were utilized as emulsifiers to stabilize oil-in-water Pickering emulsions of various oils. The results indicated that the high efficiency of LNPs in stabilizing Pickering emulsions was due to their irreversible adsorption at the oil–water interface of the droplets. Overall, a straightforward way for the controllable preparation of LNPs and their use as Pickering emulsifiers was demonstrated.

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“…The transmittance values of GDesL9 and ODesL9 were kept below 2%, and especially, the transmittance of ODesL9 remained stable. According to the literature, 34 in the energy distribution of sunlight, the content of UVA is 15 times than that of UVB. Meanwhile, UVA has stronger penetrating power, and UVA can penetrate most transparent glass and plastic, which is the main cause of skin aging and pathological changes.…”

Section: Resultsmentioning

confidence: 99%

Subcritical Ethanol Catalyzed with Deep Eutectic Solvent Extract Phenolic Lignin for Preparation of an Ultraviolet-Blocking Composite Film

Guo

Sha

et al. 2020

Energy Fuels

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To investigate the high phenolic lignin extraction process, deep eutectic solvents based on oxalic acid and glycerol as a hydrogen bond donor were first prepared and analyzed. Two different types of deep eutectic solvent lignin and ethanol lignin were extracted using a high-pressure autoclave at different temperatures and times, and then the obtained lignin was used to prepare an ultraviolet (UV)-blocking composite film with nanofibrillated cellulose. The extract yield, phenolic hydroxyl group content, molecular weight distribution, and UV-blocking property of extracted lignin were characterized, and the UV-blocking and water-resisting properties of the lignin composite films were also analyzed. Gel permeation chromatography and phenolic hydroxyl content analysis results showed that the hydrogen bond donor type of oxalic acid cooperates with the extraction temperature of 160 °C as an important factor for obtaining the high phenolic hydroxyl content and uniform molecular weight lignin. UV spectrophotometer and thermogravimetry results indicated that the high phenolic hydroxyl lignin has excellent UV-blocking property, while the thermal stability of lignin may be slightly reduced. Meanwhile, in comparison to glycerol deep eutectic solvent lignin, an oxalic hydrogen-bond-donor-type lignin composite film exhibited higher UV absorption and water-resisting properties with lower lignin addition.

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Preparation, structure, and properties of poly(ethyleneoxide)/lignin composites used for UV absorption

Cited by 14 publications

References 46 publications

Lignin: A Review on Structure, Properties, and Applications as a Light-Colored UV Absorber

Lignin: A Review on Structure, Properties, and Applications as a Light-Colored UV Absorber

Acetone/Water Cosolvent Approach to Lignin Nanoparticles with Controllable Size and Their Applications for Pickering Emulsions

Subcritical Ethanol Catalyzed with Deep Eutectic Solvent Extract Phenolic Lignin for Preparation of an Ultraviolet-Blocking Composite Film

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