Water-based adhesive for the manufacture of laminated cellulosic boards comprising monolayer graphene oxide, laminated cellulosic boards obtained therewith, and methods for production thereof

A method for producing a laminated cellulosic board, the method including the following steps:

• i) providing at least two cellulosic plies;
• ii) applying, to at least a part of the surface of a cellulosic ply, an adhesive comprising:
• 1) water;
• 2) between 20.0 wt % and 40.0 wt % starch;
• 3) optionally, up to 10 wt % of at least one further polymer, selected from natural polymers or soluble synthetic polymers;
• 4) a glue enhancer, comprising monolayer graphene oxide in water, in an amount such that the water-based adhesive comprises between 0.1 wt % and 10−7 wt % of monolayer graphene oxide;
• and
• 5) at least one further component, selected from fungicides and biocides, and/or stabilizing agents, gelling agents, thickening agents, anti-foaming agents, tackifyers, damp-proofing resins, rheology agents in accordance with the polymer(s);
• iii) contacting the surface of a further cellulosic ply to first cellulosic ply of step ii);
• and
• iv) optionally repeating once or more times steps ii) and iii), to obtain a laminated cellulosic board.