Pyrene-POSS nanohybrid as a dispersant for carbon nanotubes in solvents of various polarities: its synthesis and application in the preparation of a composite membrane

Table 1 TGA data for different ratios of MWCNTs and pyrene-POSS

MWCNTs/pyrene- POSS ratio^a	Pyrene/ MWCNTs surface area ratio^b	Mass loss (percent)^c	Pyrene-POSS content (mmol g⁻¹)^d	Pyrene coverage (percent)^e	Flat Pyrene-POSS coverage (percent)^e	L-shaped pyrene-POSS coverage (percent)^e
1:0.2	63:250	5.9	0.066	9.5	49	36
1:0.6	190:250	10.5	0.125	18	93	68
1:1	315:250	11.2	0.134	19	100	73
1:2	630:250	11.6	0.140	20	105	76
1:3	950:250	12.6	0.154	22	115	84

^aRatio of pyrene-POSS to purified MWCNT used for modification; ^bsurface area ratio by considering the area of pyrene unit as 60 Å² in pyrene-POSS with respect to MWCNTs; ^cmass loss of PP-MWCNTs according to TGA analysis (at 600 °C); ^dquantity of pyrene-POSS immobilized on 1 g of purified MWCNTs; ^epart of the MWCNTs surface covered by immobilized compound depending on the conformation.