Measuring cloud point pressures by image analysis: a simple and reproducible alternative method to direct visual determination

Abstract In this work, we propose an easy to implement and use methodology to measure cloud point pressures in supercritical carbon dioxide without the need for a specific setup. This method is based on the analysis of images issued from the video recording of solution changes occurring while the pressure is changed. This alternative analytical method demonstrates higher repeatability, higher accuracy than direct visual determination and enables in the case of complex architectures like block copolymers to infer additional information from cloud point measurements.