Laser heating effect on Raman spectra of styrene-butadiene rubber/multiwalled carbon nanotube nanocomposites

► ID/IG in SBR/MWCNTs sample sharply decreased with laser heating. ► G band shift in nanocomposites was weaker than that in MWCNTs. ► Self-rearrangement of MWCNTs in nanocomposites was detected with laser heating. ► Mechanical compression plays a role on the temperature effect of MWCNTs.