CHITOSAN AS A BIOBASED BARRIER COATING FOR FUNCTIONAL PAPERBOARD PRODUCTS

摘要

This invention relates to the composition of a chitosan coated paper wherein the chitosan may be derived from a variety of sources. Methods of using chitosan as a surface coating or pulp additive to tune the properties of paper and paperboard products are also described. The chitosan applied is a bio-based and environmentally friendly barrier coating and/or additive material for the manufacture of functional paper and paperboard products, specifically as evaporative cooling media requiring wet strength and structural integrity, wicking, and moisture resistance as an alternative to conventional phenolic-based resins. The solid-state fermentation method to produce chitosan and its derivatives offer renewable bio-based materials towards the manufacture of functional paper products that are eco-friendly but also offer uncompromised performance levels.

主权项

1. A composite fiber stock material comprising:
at least one layer of a fibrous base sheet; and at least one chitosan layer comprising a chitosan coat weight from about 1 g/m2 to about 10 g/m2; wherein the composite fiber stock material has an air permeance from about 20 nm/Pa s to about 50 nm/Pa s.