Polyols and isocyanates are precursors of polyurethane that can be ... of the manufacturing process to prevent adverse changes of the end product. Using FT-IR spectroscopy for in-situ monitoring of ...

Fourier transform infrared spectroscopy and variable-temperature ... during this slow cooling process, the isocyanate and phenolic hydroxyl groups reconnected, which enabled reversible ...

A technician with no knowledge of spectroscopy can perform the analysis. In this article, the focus is on Fourier transform near infrared (FT-NIR) analysis of hydroxyl value in polyether polyols, ...

As core components for generating coherent tunable radiation sources in all-solid-state lasers, second-order nonlinear ...