Determination of Sulfur and Nitrogen in Synthetic Caoutchouc

This technical report outlines the methodology for determining total sulfur and total nitrogen contents in synthetic caoutchouc using high-temperature combustion coupled with ultraviolet fluorescence detection (UVFD) and chemiluminescence detection (CLD). The report details the challenges associated with analyzing reactive solid polymer materials and presents a solution involving horizontal combustion technology. The multi EA 5100 system is highlighted for its ability to provide accurate results independent of sample matrix. The report describes the sample preparation process, including the direct analysis of solid rubber samples without pretreatment, which saves time and reduces error sources. Calibration methods using liquid standards for sulfur and nitrogen are discussed, along with the operation of the analysis system, which ensures optimal combustion conditions. Results from various rubber samples demonstrate the effectiveness of the method, with specific measurements provided for total nitrogen and sulfur contents. The report concludes with a summary of the system's capabilities and operational advantages.