Methods for biobased derivatization of cellulosic surfaces
AssigneeHS Manufacturing Group, LLC
InventorsJonathan Spender, Michael Albert Bilodeau, Daryl Aubrey Basham, Nirmal Singh Basi
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Abstract
The present invention describes tunable methods of treating cellulosic materials with a composition that provides increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.
Claims33
A method for tuneably derivatizing a cellulose-based material for water resistance or water and lipid resistance, comprising:
- a) contacting the cellulose-based material with a formulation for imparting the water resistance or the water and lipid resistance, the formulation comprising one or more saccharide fatty acid esters (SFAEs) and one or more binders;
- and
- b) binding the one or more SFAEs and the one or more binders to a surface of the cellulose-based material to obtain a bound cellulose-based material having the water resistance or the water and lipid resistance,
- wherein, in the bound cellulose-based material, the one or more SFAEs are present at a weight of at least 0.1 g/m2 on the surface of the cellulose-based material,
- the water resistance corresponds to the bound cellulose-based material exhibiting a water contact angle of equal to or greater than 90°, and
- the water and lipid resistance corresponds to the bound cellulose-based material exhibiting both a water contact angle of equal to or greater than 90° and a TAPPI T 559 KIT test value of from 3 to 12.
A method for tuneably derivatizing a cellulose-based material for water resistance or water and lipid resistance, comprising:
- a) preparing a formulation for imparting the water resistance or the water and lipid resistance to a surface of a cellulose-based material, the formulation consisting essentially of a saccharide fatty acid ester (SFAE) and a binder;
- b) contacting the surface of the cellulose-based material with the formulation;
- and
- c) binding the SFAE and the binder to the cellulose-based material to obtain a bound cellulose-based material having the water resistance or the water and lipid resistance,
- wherein, in the bound cellulose-based material, the SFAE is present at a weight of at least 0.1 g/m2 on the surface of the cellulose-based material,
- the water resistance corresponds to the bound cellulose-based material exhibiting a water contact angle of equal to or greater than 90°, and
- the water and lipid resistance corresponds to the bound cellulose-based material exhibiting both a water contact angle of equal to or greater than 90° and a TAPPI T 559 KIT test value of from 3 to 12.
Dependencies are inferred from the claim text.