Abstract:
:The utilization from biomass feedstocks to fabricate the advanced nanomaterials has greatly attracted a great interest due to their low cost and sustainability. This work aimed to explore a simple way to prepare cellulose nanofibers using water-based approach via mechanical defibrillation. Cellulose fibers were first extracted from water hyacinth towards chemical treatments and then mechanically disintegrated as a function of defibrillation cycles. The morphologies, thermal stabilities, physical properties, and rheological characteristics of the micro- and nanofibers were demonstrated. It was found that the obtained nanofibers having a diameter of 5-50 nm and were successfully prepared within 10 defibrillation cycles. Even though longer defibrillation cycles greatly provided higher water retention value and specific surface area, a gradual decrease in crystallinity index, thermal degradation temperatures, and degree of polymerization was also observed. Based on the rheological properties, the storage modulus and steady viscosity of the as-prepared nanofibers suspension increased significantly as a function of defibrillation, resulting in a gel-like structure with a shear-thinning behavior. Additionally, the rheological parameters of the obtained nanofibers estimated using a Herschel-Bulkley model were more accurate than that estimated using a Bingham-Plastic model. The obtained nanofibers could be used as a prime candidate for many potential applications.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Pakutsah K,Aht-Ong Ddoi
10.1016/j.ijbiomac.2019.12.172subject
Has Abstractpub_date
2020-02-15 00:00:00pages
64-76eissn
0141-8130issn
1879-0003pii
S0141-8130(19)37088-6journal_volume
145pub_type
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