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Gradient porosity poly(dicyclopentadiene)

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Abstract

This article describes the preparation of gradient porosity thermoset polymers. The technique used is based on polymerizing a solution of cross-linkable dicyclopentadiene and 2-propanol. The forming polymer being insoluble in 2-propanol, phase separation occurs. Subsequent drying of the 2-propanol gives porosities up to 80%. An apparatus was built to produce a gradient in 2-propanol concentration in a flask, resulting in polymerized gradient porosity rods. The resulting materials have been characterized by scanning electron microscopy (SEM) and density measurements. A mathematical model which allows prediction of the gradient produced is also presented.

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Author notes

  1. J. G. Hilborn

    Present address: The Angstrom Laboratory, Uppsala University, S-75121, Uppsala, Sweden

Authors and Affiliations

  1. Polymers Laboratory, Materials Department, Swiss Federal Institute of Technology, CH-1015, Lausanne, Switzerland

    A. Della Martina & J. G. Hilborn

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  1. A. Della Martina
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Martina, A.D., Hilborn, J.G. Gradient porosity poly(dicyclopentadiene). Journal of Materials Research 16, 2045–2052 (2001). https://doi.org/10.1557/JMR.2001.0280

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