Wet-Spun Composite Filaments from Lignocellulose Nanofibrils/Alginate and Their Physico-Mechanical Properties.

Autor: Park JS; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Korea.; National Institute of Forest Science, Seoul 02455, Korea., Han SY; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea., Bandi R; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea., Lee EA; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Korea.; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea., Cindradewi AW; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Korea.; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea., Kim JK; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Korea.; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea., Kwon GJ; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea.; Kangwon Institute of Inclusion Technology, Kangwon National University, Chuncheon 24341, Korea., Seo YH; Department of Advanced Mechanical Engineering, Kangwon National University, Chuncheon 24341, Korea., Youe WJ; National Institute of Forest Science, Seoul 02455, Korea., Gwon J; National Institute of Forest Science, Seoul 02455, Korea., Park CW; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea., Lee SH; Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon 24341, Korea.; Institute of Forest Science, Kangwon National University, Chuncheon 24341, Korea.
Jazyk: angličtina
Zdroj: Polymers [Polymers (Basel)] 2021 Sep 01; Vol. 13 (17). Date of Electronic Publication: 2021 Sep 01.
DOI: 10.3390/polym13172974
Abstrakt: Lignocellulose nanofibrils (LCNFs) with different lignin contents were prepared using choline chloride (ChCl)/lactic acid (LA), deep eutectic solvent (DES) pretreatment, and subsequent mechanical defibrillation. The LCNFs had a diameter of 15.3-18.2 nm, which was similar to the diameter of commercial pure cellulose nanofibrils (PCNFs). The LCNFs and PCNFs were wet-spun in CaCl 2 solution for filament fabrication. The addition of sodium alginate (AL) significantly improved the wet-spinnability of the LCNFs. As the AL content increased, the average diameter of the composite filaments increased, and the orientation index decreased. The increase in AL content improved the wet-spinnability of CNFs but deteriorated the tensile properties. The increase in the spinning rate resulted in an increase in the orientation index, which improved the tensile strength and elastic modulus.
Databáze: MEDLINE
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