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

被引：3

作者：

Park, Ji-Soo ^{[1
,2
]}

Han, Song-Yi ^{[3
]}

Bandi, Rajkumar ^{[3
]}

Lee, Eun-Ah ^{[1
,3
]}

Cindradewi, Azelia-Wulan ^{[1
,3
]}

Kim, Jeong-Ki ^{[1
,3
]}

Kwon, Gu-Joong ^{[3
,4
]}

Seo, Young-Ho ^{[5
]}

Youe, Won-Jae ^{[2
]}

Gwon, Jaegyoung ^{[2
]}

Park, Chan-Woo ^{[3
]}

Lee, Seung-Hwan ^{[1
,3
]}

机构：

[1] Kangwon Natl Univ, Coll Forest & Environm Sci, Dept Forest Biomat Engn, Chunchon 24341, South Korea

[2] Natl Inst Forest Sci, Seoul 02455, South Korea

[3] Kangwon Natl Univ, Inst Forest Sci, Chunchon 24341, South Korea

[4] Kangwon Natl Univ, Kangwon Inst Inclus Technol, Chunchon 24341, South Korea

[5] Kangwon Natl Univ, Dept Adv Mech Engn, Chunchon 24341, South Korea

来源：

POLYMERS | 2021年 / 13卷 / 17期

关键词：

lignocellulose nanofibril; alginate; wet-spinning; composite filament; CELLULOSE NANOFIBRILS; ALGINATE; PRETREATMENT; BIOMASS; FILMS;

D O I：

10.3390/polym13172974

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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 CaCl2 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.

引用

页数：13

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