Presentation Profile
TGA-GC/MS coupling: Quantification of low-content styrene–butadiene rubber in natural rubber
Currently Scheduled: 10/15/2019 - 4:35 PM - 4:55 PM
Room: South Lobby
Main Author
Caleb McDonald - Mettler Toledo
Abstract:
Thermogravimetric-analysis(TGA) is often used to characterize the composition of blends. However, low content components are difficult to quantify by TGA. One solution is to couple the TGA to an evolved-gas-analyzer such as FTIR or MS. However, often, many decomposition products evolve simultaneously. Consequently, only the main products can be identified and can overlap compounds with lower concentration. A chromatographic separation is therefore necessary to identify the simultaneously evolved products. The TGA can be coupled to a GC/MS by means of a heated storage interface(IST). The feasibility of using TGA-IST-GC/MS to estimate very low amounts of styrene–butadiene(SBR) is demonstrated here..
