Waterborne, Nanocomposite Pressure-Sensitive Adhesives with High Tack Energy, Optical Transparency, and Electrical Conductivity

Authors


  • We acknowledge assistance from Dr. P. Sellin and I. Giniewicz (University of Surrey) in the conductivity measurements. P. Jenneson (Surrey) lent a charge-coupled device camera and provided useful advice in the video analysis. We have benefited from useful discussions with O. Dupont (Cytec Surface Specialties) and Philippe Vandervorst (University of Sussex). Y.-P. S. acknowledges NSF, NASA, and the Center for Advanced Engineering Fibers and Films (NSF-ERC at Clemson University) for financial support. T. W. acknowledges scholarships from the University of Surrey and from Universities UK. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

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Transparent and conductive pressure-sensitive adhesives are cast from aqueous colloidal dispersions of poly(butyl acrylate) (P(BuA)) and functionalized carbon nanotubes (CNTs). At the percolation threshold for network formation (at only 0.3 wt % functionalized CNT), the nanotubes remarkably double the amount of strain at adhesive failure and increase the adhesion energy by 85 % (see figure). The tack properties are explained by current models of adhesive debonding.

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