This model shows nine glucose units joined by alternating β (beta) 1-4 bonds
This forms a flat ribbon-like strand which is the basis for the cellulose microfibril.
Move the molecule end on to see this
Zoom in on the middle section
and .. back to original position.
Every other glucose unit is effectively the opposite way up, as they are in cellobiose. This can be seen when the carbon 6 and associated groups
Cellulose forms microfibrils with many such strands running parallel to one another, stabilised by hydrogen bonds which extend sideways between strands, as well as between glucose units within each strand.
H bonds within the strand.