Jump to main content
Jump to site search

Issue 40, 2019
Previous Article Next Article

Extraordinary solution-processability of lignin in phenol–maleic anhydride and dielectric films with controllable properties

Author affiliations

Abstract

Highly efficient and cost-competitive dissolution of lignin is vital to value-added utilization of lignin waste streams. Here, a novel and cost-efficient supramolecular eutectic liquid (phenol-MAH) comprising phenol and maleic anhydride was developed, which can rapidly dissolve lignin with ultrahigh-solid loading (>50 wt%) at room temperature. About 70 wt% lignin loading in phenol-MAH leads to a highly cohesive plasticine state of lignin, which is unprecedented in lignin-based materials. Experimental and computational approaches revealed that the cooperation of strong π-stacking and hydrogen-bonding interactions is responsible for the extraordinary solution-processability of lignin in phenol-MAH. Enhanced compatibility and activity of lignin are also ascribed to the phenolation and acylation of phenol-MAH. Furthermore, phenol-MAH was applied to develop renewable lignin-based dielectric films without solvent removal. The resulting films with a nano-network structure display highly tunable dielectric properties attributed to α-dispersion and the Maxwell–Wagner effect. The modulation of the crosslinking density leads to controllable mechanical properties (e.g. yield stress, 0.05–31.50 MPa) of the films by changing lignin loading. The tailored performance demonstrates that the bio-film can be used as a renewable dielectric material for transient electronics. The scalable phenol-MAH strategy is expected to facilitate the fabrication of novel functional bio-materials with high lignin-loading.

Graphical abstract: Extraordinary solution-processability of lignin in phenol–maleic anhydride and dielectric films with controllable properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 Jun 2019, accepted on 19 Sep 2019 and first published on 21 Sep 2019


Article type: Paper
DOI: 10.1039/C9TA06665A
J. Mater. Chem. A, 2019,7, 23162-23172

  •   Request permissions

    Extraordinary solution-processability of lignin in phenol–maleic anhydride and dielectric films with controllable properties

    Q. Fan, T. Liu, C. Zhang, Z. Liu, W. Zheng, R. Ou and Q. Wang, J. Mater. Chem. A, 2019, 7, 23162
    DOI: 10.1039/C9TA06665A

Search articles by author

Spotlight

Advertisements