Table 2.

Regressed linear equations for the Ses of the CNT/PVA/ZnO composites with various PVA doping amounts.

m(CNT):m(PVA)	Tension side	Compression side
0.2	$y=5.47x+0.381⁎$	$y=-5.607x+0.485$
0.5	..	..
1.0	$y=11.95x+5.633$	$y=-9.78x+0.6603$

*Note that y and x represent the fitted ΔR/R₀ and ɛ of the ΔR/R₀ − ɛ curve under tension and compression, respectively.