Study of the calculation IR and modeling on nitrile rubber

Abstract Nitrile rubber (NBR) is a common analysis object in the field of non-metallic failure analysis. Usually, the sample state greatly affects the quality of the spectrum when collecting its infrared spectrum (IR), leading to increased difficulty in interpretation. This paper took NBR as an example and carried on a discussion and comparative analysis for the calculated IR of NBR and its Modelling. As a result, a polymer modeling method for computational IR was proposed.