Photoinduced chemical crosslinking activity and photo-oxidative stability of amine acrylates: photochemical and spectroscopic study

Thermally Curable Polystyrene via Click Chemistry

“…Cross-linking of linear polymers is one approach to improve the properties and consequently to access the demanding regimes of high-tech applications. Cross-linking of conventional polymers is readily achieved by the incorporation of a multifunctional monomer during the polymerization process. − High-energy radiation or photochemical irradiation has been used, but in addition to the cross-linking, both methods may also involve chain scission that can result in polymer degradation or the introduction of unwanted impurities . Therefore, particularly in photochemical cross-linking, the incorporation of chromophoric groups into polymers absorbing selectively at irradiation wavelengths, where the polymer is transparent, is a crucial prerequisite .…”

1H NMR Study of Hydrogen Abstraction in Model Compound Mimics of Polymers

“…To simplify interpretation of the 1 H NMR spectra, we have chosen to study a series of model compounds with structures that mimic the repeat units of a number of commonly used polymers. The manner in which the structures of the model compounds map onto those of commonly used polymers is shown in Table . For instance, caprolactam ( 1 ) was used as a small molecule substitute for polycaprolactam, and ε ‐caprolactone ( 3 ) was used for polycaprolactone.…”

Effect of tertiary amines on yellowing of UV‐curable epoxide resins

“…Normally, amine retards cationic photopolymerization. But some amines, such as mono‐acrylate of a cyclic carbamate, mono‐acrylate of a cyclic urethane18 and amine acrylate,19, 20 may also serve as oxygen inhibitors that can reduce the yellowness of UV‐curable resins. Imidazole usually serves as a thermal accelerator and can be thermally cured at 80–120 °C.…”