Low molecular weight and highly functional RCF lignin products as a full bisphenol a replacer in bio-based epoxy resins

Aelst, Korneel Van; Sinay, Elien Van; Vangeel, Thijs; Zhang, Yingtuan; Renders, Tom; Aelst, Joost Van; Sels, Bert F.

doi:10.1039/d1cc02263f

Cited by 36 publications

(24 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this work, the residual lignin is considered waste to simplify the comparison between RCD and RD-RCD; however, as technical lignins tend to be somewhat recalcitrant, this stream accounts for most of the input lignin feedstock. Oligomeric lignin has been used in numerous materials applications (27,(52)(53)(54)(55)(56), and it is possible to recover this partially deconstructed lignin through precipitation for further upgrading (see fig. S9 and table S3).…”

Section: Tea Of Lignin-based Psa Productionmentioning

confidence: 99%

Ambient-pressure lignin valorization to high-performance polymers by intensified reductive catalytic deconstruction

et al. 2022

View full text Add to dashboard Cite

Chemocatalytic lignin valorization strategies are critical for a sustainable bioeconomy, as lignin, especially technical lignin, is one of the most available and underutilized aromatic feedstocks. Here, we provide the first report of an intensified reactive distillation–reductive catalytic deconstruction (RD-RCD) process to concurrently deconstruct technical lignins from diverse sources and purify the aromatic products at ambient pressure. We demonstrate the utility of RD-RCD bio-oils in high-performance additive manufacturing via stereolithography 3D printing and highlight its economic advantages over a conventional reductive catalytic fractionation/RCD process. As an example, our RD-RCD reduces the cost of producing a biobased pressure-sensitive adhesive from softwood Kraft lignin by up to 60% in comparison to the high-pressure RCD approach. Last, a facile screening method was developed to predict deconstruction yields using easy-to-obtain thermal decomposition data. This work presents an integrated lignin valorization approach for upgrading existing lignin streams toward the realization of economically viable biorefineries.

show abstract

Section: Tea Of Lignin-based Psa Productionmentioning

confidence: 99%

Ambient-pressure lignin valorization to high-performance polymers by intensified reductive catalytic deconstruction

et al. 2022

View full text Add to dashboard Cite

show abstract

“…oligomers with M w of 985 g mol −1 (ref. 97)). As a result of the oligomeric character of PL, the monomer content is relatively low.…”

Section: Molecular and Chemical Composition Of Plmentioning

confidence: 99%

Pyrolytic lignin: a promising biorefinery feedstock for the production of fuels and valuable chemicals

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The FTIR spectra of GLFs are shown in Figure S9. A peak appeared at approximately 909 cm –1 , which was assigned to oxirane ring stretching vibrations, while the peak at 3450 cm –1 attributed to the hydroxyl band significantly decreased, confirming the formation of epoxy groups in the lignin structure . The epoxy equivalent weight (EEW) was also measured and is listed in Table S5.…”

Section: Results and Discussionmentioning

confidence: 94%

“…A peak appeared at approximately 909 cm −1 , which was assigned to oxirane ring stretching vibrations, while the peak at 3450 cm −1 attributed to the hydroxyl band significantly decreased, confirming the formation of epoxy groups in the lignin structure. 36 The epoxy equivalent weight (EEW) was also measured and is listed in Table S5. The EEW showed an upward trend with an increasing phenolic hydroxyl group content of fractionated lignin.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Regulating Lignin-Based Epoxy Vitrimer Performance by Fine-Tuning the Lignin Structure

Tang

Xue

Tan

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Lignin is the second most abundant lignocellulosic biomass, and as a natural polymer, it shows great potential in preparing functional materials to meet the demand for green/ sustainable development. Unfortunately, the inherent heterogeneity of lignin largely limits its applications. Furthermore, the effect of the lignin structure on the performance of the final materials has seldom been investigated. In this work, a totally biobased dynamic cross-linked vitrimer with up to 70% lignin content was successfully prepared from epoxidized fractionated lignin and sebacic acid without additional chemical modifications. The lignin structure effect on the performance of the resultant lignin-based epoxy vitrimers (LEVs) was systematically investigated. The experimental results show that the phenolic hydroxyl content and the ratio of flexible to rigid linkages in lignin have strong correlations with the tensile strength, toughness, self-repair ability, and reprocessability of the resultant LEVs. Meanwhile, the molecular weight and the S/G ratio of lignin show strong correlations with the thermal properties of the resultant materials. This study not only presents a fundamental study regarding the relationships between lignin properties, and the resultant LEVs have great potential applications as advanced packaging materials for light-sensitive commodities due to the inherent UV resistance of lignin.

show abstract

Low molecular weight and highly functional RCF lignin products as a full bisphenol a replacer in bio-based epoxy resins

Abstract: Herein, we present a full lignocellulose-to-chemicals valorization chain, wherein low molecular weight and highly functional lignin oligomers, obtained from Reductive Catalytic Fractionation (RCF) of pine wood, were used to fully...

Cited by 36 publications

References 22 publications

Ambient-pressure lignin valorization to high-performance polymers by intensified reductive catalytic deconstruction

Ambient-pressure lignin valorization to high-performance polymers by intensified reductive catalytic deconstruction

Pyrolytic lignin: a promising biorefinery feedstock for the production of fuels and valuable chemicals

Regulating Lignin-Based Epoxy Vitrimer Performance by Fine-Tuning the Lignin Structure

Contact Info

Product

Resources

About