2-hydroxyethyl methacrylate 1 Amphiphilic block copolymers 1 Block co polymers 1 Block copolymers 1 Butyl methacrylates 1 Chemical compositions 1 High resolution transmission electron microscopy 1 Hydrophobic blocks 1 Hydrophobicity 1 Liposomes 1 Membrane composition 1 Membranes 1 Phospholipids 1 Polymersomes 1 Property 1 Vesicle membranes X ray spectroscopy 1