This proposal is part of a research programme which is focused on nano-fibres prepared by electrospinning. The programme is centered on developing an understanding of the formation of structure during spinning. We have shown successfully that we can exploit low Q neutron scattering technques to study nanofibres of labelled mixtures of polystyrene prepared using different conditions and this has shown that although the chain trajectories are largely isotropic they are strongly dependent on the concentration in the initial solution. This proposal seeks time to complete these studies by determining the chain dimensions in the starting highly concentrated solutions of polystyrene in strongly polar solvents using labelled mixtures in a null scattering length solvent. This is only possible using low Q neutron scattering.