We shall use SANS to investigate the conformational behaviour of a range of amphiphilic copolymers with varying architectures: graft, hyperbranched block, hyperbranched random, linear block and linear random. These consist of a hydrophobic polymethacrylate segment and a hydrophilic segment of poly(acrylic acid). The length of the alkyl chain of the methacrylate monomers has been varied so that the effect of the hydrophobicity of this portion of the polymer can be investigated. We have carried out initial SANS measurements on these materials in dilute d-THF solution, a good solvent for both blocks, and in a d-THF/D2O mixture. D2O is a good solvent for acrylic acid but a poor one for methacrylates. A conformational change was seen between the two solvent systems. We wish to now investigate the reverse case by using a d-THF/CDCl3 system with CDCl3, a good solvent for methacrylates only.