Lignocellulose nanofibers prepared by ionic liquid pretreatment and subsequent mechanical nanofibrillation of bagasse powder: Application to esterified bagasse/polypropylene composites

Kazuaki Ninomiya; Megumi Abe; Takayuki Tsukegi; Kosuke Kuroda; Yota Tsuge; Chiaki Ogino; Kentaro Taki; Tetsuya Taima; Joji Saito; Mitsugu Kimizu; Kiyoshi Uzawa; Kenji Takahashi

doi:10.1016/j.carbpol.2017.11.003

Lignocellulose nanofibers prepared by ionic liquid pretreatment and subsequent mechanical nanofibrillation of bagasse powder: Application to esterified bagasse/polypropylene composites

Carbohydr Polym. 2018 Feb 15:182:8-14. doi: 10.1016/j.carbpol.2017.11.003. Epub 2017 Nov 4.

Authors

Kazuaki Ninomiya¹, Megumi Abe², Takayuki Tsukegi³, Kosuke Kuroda⁴, Yota Tsuge⁵, Chiaki Ogino⁶, Kentaro Taki⁴, Tetsuya Taima⁷, Joji Saito⁸, Mitsugu Kimizu⁸, Kiyoshi Uzawa³, Kenji Takahashi⁴

Affiliations

¹ Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan. Electronic address: ninomiya@se.kanazawa-u.ac.jp.
² School of Natural System, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
³ Innovative Composite Materials Research and Development Center (ICC), Kanazawa Institute of Technology, 2-2 Yatsukaho, Haku-San 924-0838, Japan.
⁴ Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
⁵ Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
⁶ Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe 657-8501, Japan.
⁷ Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan; Research Center for Sustainable Energy and Technology, College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
⁸ Industrial Research Institute of Ishikawa, 2-1 Kuratsuki, Kanazawa 920-8203, Japan.

PMID: 29279129
DOI: 10.1016/j.carbpol.2017.11.003

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 0.83m²/g, 3.1m²/g, 6.3m²/g, and 32m²/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 0.52J/cm³, 0.73J/cm³, 0.92J/cm³, and 1.29J/cm³ 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.

Keywords: Bagasse; Choline acetate; Composites; Ionic liquid; Lignocellulose nanofiber; Pretreatment.

MeSH terms

Cellulose / chemistry*
Ionic Liquids / chemistry*
Lignin / chemical synthesis*
Lignin / chemistry
Nanofibers / chemistry*
Particle Size
Polypropylenes / chemistry*

Substances

Ionic Liquids
Polypropylenes
lignocellulose
Cellulose
Lignin
bagasse