Development of a simultaneous SANS / FTIR measuring system and its application to polymer cocrystals

6th European Conference on Neutron Scattering

Kaneko, F.^1 ; Seto, N.^1 ; Sato, S.^1 ; Radulescu, A.^2 ; Schiavone, M.M.^2 ; Allgaier, J.^3 ; Ute, K.^4

Graduate School of Science, Osaka University, Toyonaka, Osaka

560-0043, Japan^1

JCNS, Outstation at MLZ, Lichtenbergstrae 1, Garching

85747, Germany^2

JCNS and ICS, Forshungszentrum Jülich GmbH, Jülich

52425, Germany^3

Dep. of Chem. Sci. and Tech., University of Tokushima, Tokushima

770-8506, Japan^4

关键词: FT-IR-spectrometers;    ITS applications;    Measuring systems;    Neutron science;    Small angle neutron;    Structure information;    Syndiotactic polystyrenes;    Time resolved measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/746/1/012065/pdf
DOI  :  10.1088/1742-6596/746/1/012065

来源: IOP

【 摘 要 】

In order to provide plenty of structure information which would assist in the analysis and interpretation of small angle neutron scattering (SANS) profile, a novel method for the simultaneous time-resolved measurement of SANS and Fourier transform infrared (FTIR) spectroscopy has been developed. The method was realized by building a device consisting of a portable FTIR spectrometer and an optical system equipped with two aluminum coated quartz plates that are fully transparent to neutron beams but play as mirrors for infrared radiation. The optical system allows both a neutron beam and an infrared beam pass through the same position of a test specimen coaxially. The device was installed on a small angle neutron diffractometer, KWS2 of the Jülich Centre for Neutron Science (JCNS) outstation at Heinz Maier-Leibnitz Center (MLZ) in Garching, Germany. In order to check the performance of this simultaneous measuring system, the structural changes in the cocrystals of syndiotactic polystyrene during the course of heating were followed. It has been confirmed that FTIR spectra measured in parallel are able to provide information about the behavior of each component and also useful to grasp in real time what is actually happening in the sample system.