Simultaneous reinforcement of the electrical and mechanical properties of carbon nanotube fibers by using a natural cross-linkable thermosetting polymer

Abstract

A simple and efficient reinforcing strategy for mechanical and electrical properties of carbon nanotube (CNT) fibers is developed by using a natural urushiol as an eco-friendly and cross-linkable agent. This...

High Toughness Combined with High Strength in Oxide Ceramic Nanofibers

“…The silica nanofibers prepared by the self‐templated electrospinning method were nearly ideal dense, uniform, and defect‐free, so they exhibited the highest toughness of ≈34.29 MJ m −3 , which was ≈seven times that of the PVA‐templated sample (≈4.96 MJ m −3 ), and even ≈35 times that of the PVB‐templated sample (≈0.98 MJ m −3 ). Furthermore, the mechanical properties of silica nanofibers obtained by self‐templated electrospinning method were also better than those of most previously reported materials, such as silicon‐based fiber, [ 45 ] zirconium‐based fiber, [ 46 ] carbon nanotube fiber, [ 47 ] and graphene‐based fibers (Figure 5g). [ 48–53 ] Such high toughness is remarkable considering that the amorphous silica nanofibers obtained by self‐templated electrospinning method lack microscopic defects such as dislocation, which can rearrange to shield local stress and inhibit crack propagation.…”

“…≈35 times that of the PVB-templated sample (≈0.98 MJ m −3 ). Furthermore, the mechanical properties of silica nanofibers obtained by self-templated electrospinning method were also better than those of most previously reported materials, such as silicon-based fiber, [45] zirconium-based fiber, [46] carbon nanotube fiber, [47] and graphene-based fibers (Figure 5g). [48][49][50][51][52][53] Such high toughness is remarkable considering that the amorphous silica nanofibers obtained by self-templated electrospinning method lack microscopic defects such as dislocation, which can rearrange to shield local stress and inhibit crack propagation.…”

“…The toughness values of the three types of silica nanofibers were obtained according to the corresponding mechanical curves. The silica nanofibers prepared by the self-templated electrospinning method were nearly ideal dense, uniform, and defect-free, so they exhibited the highest toughness of ≈34.29 MJ m −3 , which was ≈seven times that of the PVA-templated sample (≈4.96 MJ m −3 ), and even [45] zirconium-based fiber, [46] carbon nanotube fiber, [47] and graphene-based fibers [48][49][50][51][52][53] ) with the samples in this work.…”

“…f) In situ FIB-SEM manipulation of an individual silica nanofiber synthesized by the self-templated electrospinning method. g) Comparison of strength and toughness of other materials (silicon-based fiber,[45] zirconium-based fiber,[46] carbon nanotube fiber,[47] and graphene-based fibers[48][49][50][51][52][53] ) with the samples in this work.…”