Overview
ABSTRACT
After a brief reminder of the chemical nature of polymers, including notably the reticulation process, this article deals with the main principles that govern the two main synthesis routes of three-dimensional polymers. It then proceeds to presenting the representation of the structure of the network on the basis of the constitutional repeating unit (CRU) which allows for reflecting the stoichiometry and functionality of the initial monomers. These representations lead to the theoretical determination of structural variables, the experimental determinations of these variables via methods such as differential calorimetry, infrared spectrophotometry or nuclear magnetic resonance.
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Read the articleAUTHORS
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Jacques VERDU : Doctor of Science - Professor at the École nationale supérieure d'arts et métiers (ENSAM-Paris)
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Xavier COLIN : Doctor - Senior lecturer at the École nationale supérieure d'arts et métiers (ENSAM-Paris)
INTRODUCTION
After a brief review of the chemical nature of polymers with a three-dimensional covalent backbone, we propose to introduce the reader :
the representation of network structures as a function of chemical data on the system;
the theoretical determination, based on these representations, of the structural variables defining the network (such as the one known in practice as –, often improperly – cross-linking rate);
and, finally, to the experimental determination of these variables.
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Three-dimensional macromolecular structures
Definitions
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