Skip to Main Content
Contribution of residual proteins to the thermomechanical performance of cellulosic nanofibrils isolated from green macroalgaeAuthor(s): Jiaqi Guo; Khan Mohammad Ahsan Uddin; Karl Mihhels; Wenwen Fang; Päivi Laaksonen; J. Y. Zhu; Orlando J. Rojas
Source: ACS Sustainable Chemistry & Engineering. 5(8): 6978-6985.
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
Download Publication (8.0 MB)
DescriptionCellulosic nanofibrils (CNFs) were isolated from one of the most widespread freshwater macroalgae, Aegagropila linnaei. The algae were first carboxylated with a recyclable dicarboxylic acid, which facilitated deconstruction into CNFs via microfluidization while preserving the protein component. For comparison, cellulosic fibrils were also isolated by chemical treatment of the algae with sodium chlorite. Compared with the energy demanded for deconstruction of wood fibers, algal biomass required substantially lower levels. Nevertheless, the resultant nanofibrils were more crystalline (crystallinity index > 90%) and had a higher degree of polymerization (DP > 2500). Taking advantage of these properties, algal CNFs were used to produce films or nanopapers (tensile strength of up to 120 MPa), the strength of which resulted from protein-enhanced interfibrillar adhesion. Besides being translucent and flexible, the nanopapers displayed unusually high thermal stability (up to 349 °C). Overall, we demonstrate a high-end utilization of a renewable bioresource that is available in large volumes, for example, in the form of algal blooms.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationGuo, Jiaqi; Uddin, Khan Mohammad Ahsan; Mihhels, Karl; Fang, Wenwen; Laaksonen, Päivi; Zhu, J. Y.; Rojas, Orlando J. 2017. Contribution of residual proteins to the thermomechanical performance of cellulosic nanofibrils isolated from green macroalgae. ACS Sustainable Chemistry & Engineering. 5(8): 6978-6985.
KeywordsCellulose nanofibrils, macroalgae, nanopaper, proteins, thermostability
- A comparison of cellulose nanofibrils produced from Cladophora glomerata algae and bleached eucalyptus pulp
- A comparative study of cellulose nanofibrils disintegrated via multiple processing approaches
- Chapter 2.1 Integrated Production of Cellulose Nanofibrils and Cellulosic Biofuel by Enzymatic Hydrolysis of wood Fibers
XML: View XML