Figure 4.

Variation of a) the interfacial surface area per copolymer chain (s), b) the average volume fraction of water associated with the hydrophobic core‐forming PHPMA block $\left({\varphi }_{\mathrm{core}}^W\right)$ , c) the average end‐to‐end distance of the PHPMA block (σ ^PHPMA) and d) the molecular packing parameter P as a function of χ _HPMA‐W, as calculated for PHPMAC₄₁‐PHPMA₁₈₀. Dashed lines mark the sphere/worm and worm/vesicle boundaries.