Production of ultrafine dry powders of surface-intact and unmodified cellulose nanowhiskers via homogenization in nonpolar organic solvents

Jun Araki, Toshihiko Arita

研究成果: Article査読

6 被引用数 (Scopus)

抄録

A dispersion of cellulose nanowhiskers (CNWs) was prepared by hydrochloric acid hydrolysis of native cotton, washing with water, and subsequent homogenization in organic solvents. Ultrafine dry powders of CNWs were obtained without hornification (i.e., formation of rigid films) by homogenization of the cellulose hydrolysate in solvents with a small dielectric constant, e.g., toluene or cyclohexane, and subsequent air-drying. Despite using no surface modifications or additives, the obtained pure CNW powders indicated outstanding redispersibility in water compared with conventional CNWs dried from water or large-dielectric constant solvents. Homogenization in organic solvents with smaller dielectric constants (toluene and cyclohexane) yielded finer powders with higher redispersion in water than those obtained using larger dielectric constants (dimethylacetamide, acetonitrile, and water). The extent of hornification also depended upon the dielectric constant of the solvent; i.e., using a solvent with a larger dielectric constant resulted in severer hornification.

本文言語English
ページ(範囲)1438-1441
ページ数4
ジャーナルChemistry Letters
46
9
DOI
出版ステータスPublished - 2017

ASJC Scopus subject areas

  • 化学 (全般)

フィンガープリント

「Production of ultrafine dry powders of surface-intact and unmodified cellulose nanowhiskers via homogenization in nonpolar organic solvents」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル