Definitions
Three-dimensional macromolecular structures
Article REF: AM3045 V1
Definitions
Three-dimensional macromolecular structures

Authors : Jacques VERDU, Xavier COLIN

Publication date: January 10, 2008 | Lire en français

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1. Definitions

1.1 Chemical gel

For example, consider the cross-linking process shown in figure 1 .

When the rheological properties of a reaction medium are studied at a temperature above its glass transition temperature, a discontinuity known as the "sol-gel transition" is observed, illustrated by the variation in viscosity and Young's or shear modulus over time (Figure 2 ).

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