The amorphous regions of cellulose are assumed to be fully converted to C6 sugars, which contain glucose units; 100 % of the hemicellulose is assumed to be converted to C5 sugars, which contain xylose unit; no lignin is hydrolysed. In our calculations, both C5 and C6 sugars are counted together as 'sugars'. No sugar layer is formed on CNC61 surface leading to a small double electrical layer.