Fig. 1From: Transformation of the released asbestos, carbon fibers and carbon nanotubes from composite materials and the changes of their potential health impacts(Adapted from [20], with the permission of Elsevier)SEM images of a the initial sample of a pure amphibole asbestos; b the pure amphibole asbestos sample after thermal treatment; c the initial sample of a commercial asbestos-cement for external roofs pipes; d the asbestos-cement sample after thermal treatment.Back to article page