What is claimed is:
1. A composition, comprising: a polymer-grafted lignin formed by grafting one or more hydrophilic polyalkylene oxide polymers with lignin, wherein the average grafting density of the polymer-grafted lignin is less than 10 per lignin particle and a weight fraction of the one or more hydrophilic polyalkylene oxide polymers in the...
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims benefit of U.S. Provisional Patent Application Ser. No. 62/177,561, filed Mar. 18, 2015, and U.S. Provisional Patent Application Ser. No. 62/178,643, filed Apr. 15, 2015, the disclosures of which are incorporated herein by reference.