Paints: Hexandiol Diacrylate (HDDA) — Irradiation

The irradiation for 1 s of a sample of hexandiol diacrylate (HDDA) was investigated using three different atmospheres.

The heat of cross-linking is at its highest under an inert atmospehre of 100% nitrogen (green curve) with 378 J/g. A mixture of 50% nitrogen and 50% oxygen yields 268 J/g (blue curve), a pure oxygen atmosphere only 170 J/g (red curve). There is obviously a competitive reaction due to the influence of oxygen. (measurement with Photo-DSC 204 F1 Phoenix®®)