Nanotech 2008 Vol. 1
Nanotech 2008 Vol. 1
Nanotechnology 2008: Materials, Fabrication, Particles, and Characterization - Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 1

Characterization Chapter 6

Polyurethane Nanocomposites Containing NCO-Functionalized Carbon Nanotubes and NCO-Functionalized Nanoclays

Authors: T. Nguyen, A. Granier, B. Pellegrin, M. Celina

Affilation: NIST, United States

Pages: 848 - 851

Keywords: nanocomposites, polyurethane, functionalization, isocyanate, performance

Mechanical property, UV resistance, and oxygen permeation performance of automobile polyurethane (PU) coating containing NCO-functionalized (MWCNTs and nanoclays) have been measured. A novel method was used to functionalize CNTs and nanoclays using a diisocyanate in which the two end NCO groups have different reactivities. NCO-functionalized nanoparticles form covalent bonds with, and are imbedded in, the matrix, while unfunctionalized ones remain loosely on matrix surface. Tensile moduli of composites containing NCO-functionalized nanopartciles are much higher than those without or with unmodified nanoparticles. The photodegradation and oxygen permeation of composites containing CNTs was greatly reduced. The results indicated that NCO-functionalized (MWCNTs and nanoclays) can be used to greatly many fucntional properties of PU coatings.

ISBN: 978-1-4200-8503-7
Pages: 1,118
Hardcopy: $159.95

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