shows the SEM image of the resultant natural rubber latex foam at 50 K magnification. It can be seen that the 100–122 nm sized silver nanoparticles are embedded in the NRLF matrix. Fig. 8(a) shows the elemental analysis by EDX and proves the presence of silver in the NRLF matrix treated by SNP, whereas Fig. 8(b) shows that the control NRLF sample did not give a peak for elemental silver.