Abstract
Do isomeric core-forming blocks afford the same thermo-responsive behavior for diblock copolymer worm gels?
Highlights
It is emphasized that utilizing a 1 : 1 HEMA/HBMA molar ratio produces a core-forming statistical copolymer block that is isomeric with the poly(2-hydroxypropyl methacrylate) (PHPMA) core-forming block previously synthesized via reversible addition–fragmentation chain transfer (RAFT) aqueous dispersion polymerization
We have explored a new type of RAFT polymerization-induced self-assembly (PISA) formulation that involves growing a water-insoluble statistical copolymer as the core-forming block from a watersoluble poly(glycerol monomethacrylate) (PGMA) macro-CTA
HEMA is potentially suitable for RAFT aqueous dispersion polymerization, whereas HBMA is more likely to lead to a RAFT aqueous emulsion polymerization formulation.[64,65,66,67,68,69,70,71,72]
Summary
AB diblock copolymers can self-assemble in a solvent that is selective for one of the blocks to form a wide range of morphologies, including spheres,[1,2,3] worms,[4,5,6,7,8,9,10] cylinders[11] and vesicles.[6,12,13] In principle, these nano-sized structures could be utilized as bio-delivery vehicles,[14,15] nano-reactors,[16] inorganic/ organic templates,[17] or as polymeric surfactants.[18]. It is emphasized that utilizing a 1 : 1 HEMA/HBMA molar ratio produces a core-forming statistical copolymer block that is isomeric with the poly(2-hydroxypropyl methacrylate) (PHPMA) core-forming block previously synthesized via RAFT aqueous dispersion polymerization
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