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Erschienen in: Cellulose 10/2021

27.05.2021 | Original Research

The fluorine-free coating has excellent hydrophobic and oleophobic properties for porous cellulose-based materials

verfasst von: Peng Du, Qijun Ding, Chuanshan Zhao, Yifei Jiang, Wenjia Han, Xia Li

Erschienen in: Cellulose | Ausgabe 10/2021

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Abstract

Nanofibrillated cellulose is obtained from cellulose resources (e.g., Natural cellulose, bacterial cellulose) and is deemed to be environmentally friendly, green, and inexhaustible. Accordingly, we reported an innovative method for fluorine-free water- and oil/grease-repellent surface based on porous cellulose-based materials. In order to improve oil/grease resistance, sulfonated nanofibrillated cellulose (SNFC) was coated on the surface to fill the porous, the obtained paper was soaked in chitosan aqueous solution as the second layer. The-SNFC-chitosan-coated paper was applied with modified polyvinyl alcohol (MPVA) as the third layer to increase water resistance and water vapour transmittance. The experimental results showed 5.2 g/m2 SNFC, 2.5 g/m2 chitosan and 7% MPVA demonstrated excellent kit rating value of 12/12 (maximum grease resistance) (oil resistance contact angle is 103.93°), good water resistance (water contact angle is 108.6°) and high water vapour transmission rate (4.8 × 10–14 g cm/cm2 s Pa) under the condition of 90% relative humidity. This non-fluorinated and practical method is an excellent alternative to existing fluorinated materials, which will further promote the development of cellulose-based packaging.

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Metadaten
Titel
The fluorine-free coating has excellent hydrophobic and oleophobic properties for porous cellulose-based materials
verfasst von
Peng Du
Qijun Ding
Chuanshan Zhao
Yifei Jiang
Wenjia Han
Xia Li
Publikationsdatum
27.05.2021
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 10/2021
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-03959-8

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