The findings of the clustering analysis are substantiated by the Pawley fit of the PXRD pattern collected from the spherulite using the six phases found (Figure ). The PXRD pattern can be well fitted with the major phases, GSF Forms I and III and GSF-PEG IC1. No obvious peaks from the new crystal form or GSF Forms II and V were observed, and the Pawley fit was not significantly improved by including them. distance between the unit cell parameters using a threshold of 2.0 revealed six phases in the polycrystalline GSF/PEG melt crystallisation product. The major phases were GSF Form I and Form III. Two inclusion complexes (ICs) of GSF and PEG were also present together with GSF Forms V and II.