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<p>Cellulose nanomaterials are promising functional materials due to their cost efficiency, renewability, and sustainability. Herein, the effect of 3,4-dichlorophenyl isocyanate on the morphology and properties of cellulose by mechanochemical process was investigated, in which a class of loose bundle-like hydrophobic carbamylated cellulose nanofibers (CCNs) dispersed by THF was obtained. It was found that cellulose was easily disintegrated and carbamylated to get CCNs with a degree of substitution of 1.28. The water contact angle of CCNs reached 109.3° after ball milling 6&#xa0;h. Meanwhile, its film possessed high optical transmittance up to 90% at 550&#xa0;nm and a low haze of 2%. Paper coated with CCNs at a sizing amount of 13.8&#xa0;g/m<sup>2</sup> showed an oil kit rating value of 12/12 and a water contact angle of 91.7°. An additional feature of the products is strong adhesion to materials of different surface properties. These characteristics may lead to potential applications for such nanocellulose materials.</p> Graphical abstract <p></p>

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Fabrication of dichlorophenylcarbamylated cellulose nanofibers as hydrophobic functional material by mechanochemical method

  • 期刊论文

  • 发表日期：

    2025年4月16日

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  • Xi Chen,
  • Shigenori Kuga,
  • Min Wu,
  • Yong Huang

摘要

Cellulose nanomaterials are promising functional materials due to their cost efficiency, renewability, and sustainability. Herein, the effect of 3,4-dichlorophenyl isocyanate on the morphology and properties of cellulose by mechanochemical process was investigated, in which a class of loose bundle-like hydrophobic carbamylated cellulose nanofibers (CCNs) dispersed by THF was obtained. It was found that cellulose was easily disintegrated and carbamylated to get CCNs with a degree of substitution of 1.28. The water contact angle of CCNs reached 109.3° after ball milling 6 h. Meanwhile, its film possessed high optical transmittance up to 90% at 550 nm and a low haze of 2%. Paper coated with CCNs at a sizing amount of 13.8 g/m2 showed an oil kit rating value of 12/12 and a water contact angle of 91.7°. An additional feature of the products is strong adhesion to materials of different surface properties. These characteristics may lead to potential applications for such nanocellulose materials.

Graphical abstract