. 2021 Feb 28;11(3):607. doi: 10.3390/nano11030607

Table 4.

Interferometric optical profilometry of the (a) rough and (b) smooth faces of the membranes studied.

(a) Interferometric Optical Profilometry/3D Amplitude Roughness Parameters/1.2 × 0.9 µm² Field of View/ROUGH FACES
	S_a (nm)	S_q (nm)	S_z (nm)	S_sk	S_ku
Pebax	0.62	0.98	15.31	0.94	13.43
Pebax/20IL	1.17	1.65	16.58	1.44	7.49
Pebax/40IL	0.69	1.12	14.65	3.35	20.71
Pebax/60IL	0.98	1.34	15.35	0.02	5.10
Pebax/19.8IL/0.2 × GnP	1.27	1.82	14.19	1.94	9.85
Pebax/18IL/2 × GnP	1.44	2.02	21.72	1.62	11.48
Pebax/16IL/4 × GnP	2.63	3.63	32.43	1.49	8.78
Pebax/32IL/8 × GnP	3.79	5.26	40.17	1.385	7.08
Pebax/48IL/12 × GnP	7.80	10.21	56.08	0.80	5.39
(b) Interferometric Optical Profilometry/3D Amplitude Roughness Parameters/1.2 × 0.9 µm² Field of View/SMOOTH FACES
	S_a (nm)	S_q (nm)	S_z (nm)	S_sk	S_ku
Pebax	0.66	0.95	13.99	0.06	8.58
Pebax/20IL	0.83	1.12	12.20	−0.14	5.28
Pebax/40IL	0.33	0.46	8.97	0.39	15.60
Pebax/60IL	0.41	0.73	12.00	−5.03	67.22
Pebax/19.8IL/0.2 × GnP	0.55	0.74	7.31	−0.46	5.59
Pebax/18IL/2 × GnP	0.71	1.00	13.71	0.20	7.19
Pebax/16IL/4 × GnP	1.31	1.70	16.20	0.25	5.79
Pebax/32IL/8 × GnP	1.99	2.59	19.84	0.27	4.33
Pebax/48IL/12 × GnP	2.26	2.85	19.95	−0.12	3.63