Ionic Liquid Lignosulfonate: Dispersant and Binder for Preparation of Biocomposite Materials.

ABSTRACT: Ionic liquid lignins are prepared from sodium lignosulfonate by a cation exchange reaction and display glass transition temperatures as low as -13 °C. Diethyleneglycol-functionalized protic cations inhibit lignin aggregation to produce a free-flowing "ionic liquid lignin", despite it being a high-molecular-weight polyelectrolyte. Through this approach, the properties of both lignin and ionic liquids are combined to create a dispersant and binder for cellulose+gluten mixtures to produce small microphases. Biocomposite testing pieces are produced by hot-pressing this mixture, yielding a material with fewer defects and improved toughness in comparison to other lignins. The use of unmodified lignosulfonate, acetylated lignosulfonate, or free ionic liquid for similar materials production yields

SUBMITTER: Guterman R 

PROVIDER: S-EPMC7687102 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature