This works reports a novel approach at synthesising ionic quasi-block copolymers derived from a polystyrene-block-poly polyethylacrylate(butylimidazolium)bis(trifluromethanesulfonyl)imide block copolymer using a ‘one-pot’ RAFT polymerization technique. Three different quasi-block copolymer were synthesised following a sequential additional method whereby composition was altered through changing the order of monomer addition and the level of monomer conversion. The new quasi-block copolymers were analysed compositionally, thermally and through phase morphology to assess the impact this new synthesis has on polymer control and to determine whether block behaviour is maintained. The results suggests these new quasi-block behave similarly to block copolymers regarding phase behaviour, while offering potential for increased sustainability in the synthesis.