Table 2.

Solvent mixtures and times leading to various morphologies and the structural morphology in the dry phase after solvent vapor annealing.

Solvent Vol/Vol Mixtures (THF/MeOH)	Swell Time (seconds)	Final Resulting Morphology	Polymer Volume Fraction (f)	Lattice Parameter	Vertical Shrinkage (%)
As-Cast	n.a.	Perpendicular Lamellae	100%	29	n.a
80/20 (swollen state)	6300	Parallel Lamellae, swollen	32%	32	None
80/20 (dry state)	n.a	Parallel Lamellae, dry	100%	15	50%a
50/50 (swollen state)	6300	BCC (110) Spheres, swollen	40%	42	None
50/50 (dry state)	n.a	BCC 110) Spheres, dry	100%	42	42%
20/80 (swollen state)	6300	Parallel Cylinders swollen	33%	35	None
20/80 (dry state)	n.a	Parallel Cylinders dry	100%	35	35%
50/50 (swollen state)	20700	(Hexagonal)b	40%
50/50 (dry state)	n.a	Gyroid (211) dry	100%	71	45%

Lattice constant firs are good to about +/− 2nm.

^an.a.: not applicable, estimated from lamellar periods

^bstructure was not identified.