Reinforcement mechanisms in MWCNT-filled polycarbonate

By A. Eitan, F. Fisher, R. Andrews, L. Catherine Brinson, Linda Schadler. 2006

347 citations recorded by the source corpus.

The filler/matrix interface in fiber-reinforced polymer composites is critical in controlling load transfer from the matrix to the fiber, failure mechanisms, and degradation. It is not clear, however, how the mechanisms of load transfer in traditional composites apply to nanofiber-filled polymers. This paper is focused on understanding the reinforcement mechanisms in multiwalled carbon nanotube (MWCNT)/bisphenol-A polycarbonate (PC) composites. Strain dependent Raman spectroscopy shows that there is load transfer from the matrix to the nanotubes, and that the efficiency of the load transfer is improved by surface modification of the MWCNT. Dynamic mechanical analysis as well as electron microscopy reveals the presence of a large annular interphase region of immobilized polymer surrounding the embedded nanotubes. Micromechanical modeling of the elastic modulus of the composite that accounts for the limited load transfer to the interior shells of the MWCNT suggests this immobilized polymer provides an additional reinforcement mechanism that is unique for nano-filled composites.

Subfields: Materials Chemistry, Mechanical Engineering, Pollution

View Paper: https://www.semanticscholar.org/paper/76ead3130174f72b8e37c795b2410b6d6191e842

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. L. Catherine Brinson
2. R. Qiao
3. Hua Liu
4. R. Gibson
5. Yudong Huang
6. Jonghwan Suhr
7. F. Zhao
8. Zhiwei Xu

In Mechanical Engineering

1. Yudong Huang
2. F. Zhao
3. L. Catherine Brinson
4. Jonghwan Suhr
5. Lingyu Sun
6. F. Gordaninejad
7. R. Gibson

In Pollution

1. L. Catherine Brinson
2. Jonghwan Suhr
3. Lingyu Sun
4. F. Gordaninejad
5. A. Andrady
6. R. Gibson
7. A. Koelmans
8. Colin R. Janssen

Citations in the corpus

• Simulation of interphase percolation and gradients in polymer nanocomposites (2009, background): “interphase) in those systems leads to a higher Tg than unfunctionalized nanocomposites [15,39].”
• Mechanical, thermal and interfacial performances of carbon fiber reinforced composites flavored by carbon nanotube in matrix/interface (2017, background): “This interphase area could work as an additional reinforcement for mechanical stiffening of the composites [16,42].”
• Energy absorption capability of nanocomposites: A review (2009, background): “volume fraction of fiber inclusion [193].”