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The Nucleating Effect of Carbon Nanotubes on Crystallinity in R-BAPB-Type Thermoplastic Polyimide

✍ Scribed by Vladimir E. Yudin; Valentine M. Svetlichnyi; Alexander N. Shumakov; Dmitriy G. Letenko; Alexander Y. Feldman; Gad Marom

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
198 KB
Volume
26
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: The relatively high degree of crystallinity of a new thermoplastic polyimide (PI) makes it a favorable matrix candidate for fiber reinforced composites. This advantage is the result of the ability of the matrix to recrystallize during the composite manufacturing process. In this study we examine the potential nucleating effect of carbon nanotubes on a thermoplastic PI. In addition to their inherent mechanical contribution, the carbon nanotubes help recover a significant proportion of the original crystallinity.

Scanning electron micrograph of the spherulitic structure of a recrystallized carbon nanotube/polyimide film.

magnified imageScanning electron micrograph of the spherulitic structure of a recrystallized carbon nanotube/polyimide film.

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In Situ Polymerized Carbon Nanotube/Poly
In Situ Polymerized Carbon Nanotube/Polyimide Nanocomposites: Effect of Reaction Stoichiometry on the Glass Transition Properties of the Nanocomposites
✍ Dae Hwan Kim; You- Yeon Won 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 538 KB

## Abstract A series of in situ polymerized CNT/PI nanocomposite materials synthesized at a fixed diamine‐to‐dianhydride monomer feed ratio with varying concentrations of added –COOH‐ functionalized CNT is studied. It is found that the glass transition temperature of the nanocomposite varies non‐mo