Cellulose I is an enzymatically directed structure (cellulose synthase complexes in cell membrane) • Cellulose I (all‐parallel chains) is not the lowest free energy organization of the β(1→4) glucan chains
Cellulose II (regenerated or mercerised) represents lower free energy organizations (anti‐parallel chains) • End‐product depends on regeneration path (change of parameter with time, e.g. pH, temp., mechanical forces)