Figure 15.
Correlation circles on the 1–2 planes of classified PCA: (a) Fick resins, (b) Dual resins, (c) Fick composites and (d) Dual composites. Further planes are given as Supplementary Materials: Fick resins in Figure S21, Fick composites in Figure S22, Dual resins in Figure S23 and Dual composites in Figure S24.