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Gradient porosity poly(dicyclopentadiene)

Published online by Cambridge University Press:  31 January 2011

A. Della Martina and
J. G. Hilborn
A. Della Martina
Affiliation:
Polymers Laboratory, Materials Department, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
J. G. Hilborn*
Affiliation:
Polymers Laboratory, Materials Department, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
*
a)Address all correspondence to this author.
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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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Articles
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Journal of Materials Research , Volume 16 , Issue 7 , July 2001, pp. 2045 - 2052
Copyright
Copyright © Materials Research Society 2001

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