A Small-Angle Neutron Scattering Environment for In-Situ Observation of Chemical Processes.

ABSTRACT: A new sample environment for the observation of ongoing chemical reactions is introduced for small-angle neutron scattering (SANS) experiments which enables structural changes to be followed continuously across a wide Q-range in response to changes in the chemical environment. The approach is demonstrated and validated by performing single and multiple potentiometric titrations on an aqueous anionic surfactant solution (oligo-oxyethylene alkylether carboxylic acid in D₂O) with addition times varying from 1 s to 2 h. It is shown that the continuous flow set-up offers considerable advantages over classical 'static' measurements with regards to sample throughput, compositional precision and the ability to observe fast structural transitions. Finally, the capabilities and ongoing op

SUBMITTER: Hayward DW 

PROVIDER: S-EPMC5940810 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature