Lignocellulose nanofibers prepared by ionic liquid pretreatment and subsequent mechanical nanofibrillation of bagasse powder: Application to esterified bagasse/polypropylene composites. (15th February 2018)

• Record Type: Journal Article
• Authors: Ninomiya, Kazuaki; Abe, Megumi; Tsukegi, Takayuki; Kuroda, Kosuke; Tsuge, Yota; Ogino, Chiaki; Taki, Kentaro; Taima, Tetsuya; Saito, Joji; Kimizu, Mitsugu; Uzawa, Kiyoshi; Takahashi, Kenji
• Is Part Of: Carbohydrate polymers. Volume 182(2018)
• Page Start: 8
• Page End: 14
• Publication Date: 2018-02-15
• Subjects: Ionic liquid -- Choline acetate -- Pretreatment -- Lignocellulose nanofiber -- Bagasse -- Composites; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2017.11.003
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: Choline acetate (ChOAc)-pretreatment upgraded nanofibrillated bagasse (NF-bagasse). ChOAc/NF-bagasse had a larger specific surface area than NF-bagasse. ChOAc/NF-bagasse was dispersed in polypropylene composites better than NF-bagasse. Composites with ChOAc/NF-bagasse had greater toughness than those with NF-bagasse. Abstract: In the present study, we examined the efficacy of choline acetate (ChOAc, a cholinium ionic liquid))-assisted pretreatment of bagasse powder for subsequent mechanical nanofibrillation to produce lignocellulose nanofibers. Bagasse sample with ChOAc pretreatment and subsequent nanofibrillation (ChOAc/NF-bagasse) was prepared and compared to untreated control bagasse sample (control bagasse), bagasse sample with nanofibrillation only (NF-bagasse) and with ChOAc pretreatment only (ChOAc-bagasse). The specific surface area was 0.83 m 2 /g, 3.1 m 2 /g, 6.3 m 2 /g, and 32 m 2 /g for the control bagasse, ChOAc-bagasse, NF-bagasse, and the ChOAc/NF-bagasse, respectively. Esterified bagasse/polypropylene composites were prepared using the bagasse samples. ChOAc/NF-bagasse exhibited the best dispersion in the composites. The tensile toughness of the composites was 0.52 J/cm 3, 0.73 J/cm 3, 0.92 J/cm 3, and 1.29 J/cm 3 for the composites prepared using control bagasse, ChOAc-bagasse, NF-bagasse, and ChOAc/NF-bagasse, respectively. Therefore, ChOAc pretreatment and subsequent nanofibrillation of bagasse powder resulted in enhanced tensile toughness of esterified bagasse/polypropylene composites.