Evaluating Stability of Aqueous Multiwalled Carbon Nanotube Nanofluids by Using Different Stabilizers

Table 3

Characteristics of MWNFs containing different types and concentrations of stabilizer at 25°C.

Property	Stabilizer	Stabilizer concentration (wt.%)
		0.05	0.1	0.2	0.4	0.8
Viscosity; (mPa s)	CH	1.2	1	0.9	1	1.1
	AG	1.2	1.2	1.4	1.9	3.0
	TX100	0.9	0.9	0.9	0.9	1.0
	SDS	0.9	0.9	0.9	0.9	1.0
	SDBS	0.9	0.9	0.9	0.9	1.0
	CTAB	0.9	0.9	0.9	0.9	0.9
pH	CH	6.51	4.52	4.32	4.24	4.22
	AG	7.87	7.83	7.76	7.75	7.69
	TX100	7.62	7.63	7.64	7.32	7.12
	SDS	7.32	7.34	7.41	7.74	7.83
	SDBS	7.62	7.71	7.72	7.72	7.91
	CATB	7.32	7.42	7.44	7.48	7.52
Electrical conductivity (μS/cm)	CH	225	309	511	820	1410
	AG	390	539	803	1238	1970
	TX100	201	196	134	125	126
	SDS	343	430	567	885	1130
	SDBS	330	357	402	610	1120
	CATB	196	216	263	375	608