Method for improving the water tolerance of bio-based CNF-films
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United States of America Patent
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Sep 29, 2020
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Sep 21, 2017
app pub date -
Nov 30, 2015
filing date -
Nov 28, 2014
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Abstract
The present invention relates to a continuous roll-to-roll process for improving the water tolerance of bio-based polymers, in particular cellulose nanofibrils (CNF) films. Furthermore, the invention provides a method, which combines surface modification/functionalization for improving water stability and wet strength, UV/Ozone treatment, corona treatment or plasma activation for purifying and activating the surface and thus increasing the reaction efficiency, and further hydrophobization of the surface of CNF film.
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