Affiliation:
1. School of Environmental and Forest Sciences, University of Washington, Seattle, WA 98195, USA
2. VERDE Nanomaterials Inc., Davis, CA 95618, USA
Abstract
The use of agricultural waste biomass for nanocellulose production has gained interest due to its environmental and economic benefits compared to conventional bleached pulp feedstock. However, there is still a need to establish robust process technologies that can accommodate the variability of waste feedstocks and to understand the effects of feedstock characteristics on the final nanofiber properties. Here, lignocellulosic nanofibers with unique properties are produced from various waste biomass based on a simple and low-cost process using mild operating conditions. The process robustness is demonstrated by diversifying the feedstock, ranging from food crop waste (corn stover) to invasive grass species (reed canary grass) and industrial lignocellulosic residues (industrial hemp). This comprehensive study provides a thorough examination of the influence of the feedstocks’ physico-chemical characteristics on the conversion treatment, including process yield, degree of delignification, effectiveness of nanofibrillation, fiber morphology, surface charge, and density. Results show that nanofibers have been successfully produced from all feedstocks, with minor to no adjustments to process conditions. This work provides a framework for future studies to engineer nanocellulose with specific properties by taking advantage of biomass feedstocks’ intrinsic characteristics to enable versatile applications.
Funder
the Washington State Legislature, the Lewis County. 09 Rural Economic Development Fund
the Centralia Coal Transition Grants
USDA National Institute of Food and Agriculture
University of Washington Denman Professorship Fund
Subject
Polymers and Plastics,General Chemistry
Cited by
3 articles.
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