Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation

By H. Qian, A. Bismarck, E. Greenhalgh, M. Shaffer. 2010

242 citations recorded by the source corpus.

Abstract Carbon nanotubes (CNTs) were grafted on IM7 carbon fibres using a chemical vapour deposition method. The overall grafting process resulted in a threefold increase of the BET surface area compared to the original primary carbon fibres (0.57 m 2 /g). At the same time, there was a degradation of fibre tensile strength by around 15% (depending on gauge length), due to the dissolution of iron catalyst into the carbon; the modulus was not significantly affected. The wetting behaviour between fibres and poly(methyl methacrylate) (PMMA) was directly quantified using contact angle measurements for drop-on-fibre systems and indicated good wettability. Single fibre fragmentation tests were conducted on hierarchical fibre/PMMA model composites, demonstrating a significant (26%) improvement of the apparent interfacial shear strength (IFSS) over the baseline composites. The result is associated with improved stress transfer between the carbon fibres and surrounding matrix, through the grafted CNT layer. The improved IFSS was found to correlate directly with a reduced contact angle between fibre and matrix.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/84097ce6acee3ccfa0142c84fbb2443401e8472c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Materials Chemistry

1. M. Jalalvand
2. Yiyu Feng
3. G. Czél
4. N. Mehra
5. M. Wisnom
6. Jiahua Zhu
7. M. A. Kashfipour
8. W. Feng

In Mechanical Engineering

1. M. Jalalvand
2. M. Wisnom
3. G. Czél
4. L. Gorbatikh
5. I. Verpoest
6. Y. Swolfs
7. J. Galos

Citations in the corpus

• A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites (2018, background): “7 Optical images of PMMA droplets on a as-received, b oxidized, and c CNT-grafted carbon fibers [94] Advanced Composites and Hybrid Materials (2018) 1: – 415 439 420”
• Increasing the interfacial strength in carbon fiber/epoxy composites by controlling the orientation and length of carbon nanotubes grown on the fibers (2011, background): “[8] Qian H, Bismarck A, Greenhalgh ES, Shaffer MSP.”
• Design and characterisation of advanced pseudo-ductile unidirectional thin-ply carbon/epoxy-glass/epoxy hybrid composites (2016, background): “Interface modification on the fibre [12] and on the ply level [13] as well as designed discontinuities [14,15] are also suitable for delaying fracture and generating non-linearity through controlled damage before final failure.”
• All-carbon multi-scale and hierarchical fibers and related structural composites: A review (2020, unknown): “Ni (III)- [103–107], Fe(III)- [108,109] and Co(II,III)-salts (nitrates, sulphates, chlorides) alone (monometallic) or in combinations (bimetallic catalysts [110,111]) are usually applied onto CF surface from aqueous solutions prior to reduce them by hydrogen or wet chemical methods.”