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. 2025 Jan 5;18(1):198. doi: 10.3390/ma18010198

Figure 2.

Figure 2

Figure 2

(a) Polymer matrix with a less ordered and more coiled conformations showing more free volumes. (b) Polymer matrix with more ordered and extended conformations with less free volume. (c) Temperature-dependent dielectric constant values of sulfonylated PPOs (SO2-PPO25 and SO2-PPO52), adapted from Chen et al., originally reported by Zhang et al. [40,44], Copyright 2023, Wiley. (d) Dielectric constant variation as a function of PEI content in PVH/PEI blends, from the study by Ramani et al. [45].