The Two-Dimensional Solvent Gradient Interaction Chromatograph (SGIC 2D) instrument performs a fractionation of the polymer according to composition by solvent gradient HPLC technique in adsorption mode followed by a second separation by Gel Permeation Chromatography (GPC/SEC) of the fractions eluted from the first dimension. 

Polymer Char’s analytical SGIC 2D instrument is a practical alternative to preparative fractionation methods, which are sometimes tedious and time consuming. The composition - molar mass interdependence is now measured in hours instead of days, with limited solvent consumption and no manual intervention, in an intrinsically safe setup.

  • Fully automated instrument to measure the composition - molar mass interdependence of complex and functional Polyolefins.
  • Special interest for some polar or low crystallinity Polyolefins.
  • Detection performed in isocratic mode: a linear IR detector can be used instead of a non-linear ELSD. Compatible with molar mass sensitive detectors.
  • No solvents handling, fully automated process, including in-line filtration.
  • Flexible definition of the number of fractions and the solvent gradient profile.
  • Bivariate distribution results presented as contour or 3D surface graphs.
  • Automated analysis of a sequence of samples, with flexibility to use different methods for each one