Effects of nanobuds and heat welded nanobuds chains on mechanical behavior of carbon nanotubes

Yang, Xueming; Wang, Longjie; Huang, Yandong; To, Albert C.; Cao, Bing‐Yang

doi:10.1016/j.commatsci.2015.07.005

Cited by 15 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A high content of THBP-6 can provide strong interaction and load transfer between carbon nanotubes, resulting in an improvement of the final film tensile strength. However, as the flexible THBP-6 chains have a much lower strength than the CNTs, excessive THBP-6 chains in the HPCNT-6 films could reduce the tensile strength of the film . Consequently, the maximum tensile strength of the functionalized CNT film (HPCNT-6) appeared at a UV reaction time of 30 min, PCNT film to THBP-6 weight ratio of 1:150, and photoinitiator content of 1.0 wt % on the THBP-6.…”

Section: Results and Discussionmentioning

confidence: 99%

Simultaneous Improvement on Strength, Modulus, and Elongation of Carbon Nanotube Films Functionalized by Hyperbranched Polymers

Duan

Wang

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Carbon nanotube (CNT) buckypapers, or films, have the potential for wide applications because of their unique properties. Neat buckypapers or pristine CNT (PCNT) films have relatively large elongation but low strength and low modulus due to the weak interaction between CNTs. Chemical modifications of PCNT films can significantly strengthen the interaction between CNTs, resulting in high strength and high modulus but usually accompanied by low elongation. Here, we report the functionalization of pristine CNT films by thiol-ended hyperbranched polymers (THBP-n) via a thiol-ene click reaction that can introduce simultaneous improvements on the strength, modulus, and elongation to the PCNT film by 689, 812, and 32.4%, respectively. The high thiol content of THBP-n enables the formation of a network with a high degree of cross-linking between carbon nanotubes, which provides high-efficiency load transfer that increases the tensile strength and modulus of the resulting films and at the same time a compressible hyperbranched structure that allows for deformation and slip between CNTs and consequently improved elongation. The main factors affecting the mechanical performance of the functionalized CNT film are also investigated.

show abstract

Section: Results and Discussionmentioning

confidence: 99%