Simultaneous SANS/FTIR measurement system incorporating the ATR sampling method

Kaneko, Fumitoshi*; Radulescu, A.*; Nakagawa, Hiroshi   

Small angle neutron scattering (SANS) is widely used as a powerful technique to study the higher-order structure of soft matter. To increase the reliability of SANS profile analysis for complex, multi-component systems, combining different types of structural information obtained by other methods is desirable. A simultaneous measurement system combining SANS and Fourier transform infrared (FTIR) spectroscopy meets this objective and is particularly useful for targets for which it is difficult to match the timing of structural changes between experiments, but there is a problem that samples suitable for SANS are too thick for typical transmission FTIR measurements. To overcome this problem, a new simultaneous measurement system that employs the attenuated total reflection sampling method for FTIR spectroscopy has been developed.