Abstract
Small-angle neutron scattering is applied to study film-gradient membranes of polyamidoimide and similar membranes, modified by the addition of a fullerene C60 (2 wt %) during phase-inverted sedimentation of the polymer solution. It is demonstrated that membranes without a fullerene have a system of nanoscale pores filling ∼20% of the bulk polymer and having a correlation radius of R C ≈ 20 nm. However, the introduction of a fullerene leads to a decrease in the pore size to R C ≈ 15 nm, and their volume fraction decreases by ∼40%. In this regard, we discuss the role of fullerenes inclined to the creation of molecular complexes by linking chains, which is important for regulation of the molecular pore structure of membranes.
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Original Russian Text © Yu.V. Kulvelis, V.T. Lebedev, S.V. Kononova, Gy. Török, 2015, published in Poverkhnost’. Rentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, 2015, No. 1, pp. 10–15.
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Kulvelis, Y.V., Lebedev, V.T., Kononova, S.V. et al. Effect of the fullerene C60 on the structure of asymmetric microporous membranes based on polyamidoimide. J. Surf. Investig. 9, 6–11 (2015). https://doi.org/10.1134/S1027451014050322
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DOI: https://doi.org/10.1134/S1027451014050322