Abstract
The graft copolymers of chitosan and oligo(D,L-lactide) obtained by solid-phase synthesis have been used as the basis of photosensitive compositions for the fabrication of three-dimensional microstructures by laser-induced stereolithography. The electronic absorption spectra of the copolymers are close to the sum of the spectra of native chitosan and polylactide, which has been chosen as a model of grafted oligolactide chains. The fundamental absorption bands of the copolymers lie in a range to 500 nm, and their contribution to the absorption intensity of a photosensitive composition based on the copolymers at second harmonic laser frequency is insignificant. Depending on the macromolecular characteristics of the copolymers, the three-dimensional crosslinking of photosensitive compositions on their basis in the course of microstructuring occurs with different efficiency.
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Original Russian Text © T.S. Demina, K.N. Bardakova, E.A. Svidchenko, N.V. Minaev, G.I. Pudovkina, M.M. Novikov, D.V. Butnaru, N.M. Surin, T.A. Akopova, V.N. Bagratashvili, A.N. Zelenetskii, P.S. Timashev, 2016, published in Khimiya Vysokikh Energii, 2016, Vol. 50, No. 5, pp. 411—416.
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Demina, T.S., Bardakova, K.N., Svidchenko, E.A. et al. Fabrication of microstructured materials based on chitosan and D,L-lactide copolymers using laser-induced microstereolithography. High Energy Chem 50, 389–394 (2016). https://doi.org/10.1134/S0018143916050088
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DOI: https://doi.org/10.1134/S0018143916050088