Fabrication of microstructured materials based on chitosan and D,L-lactide copolymers using laser-induced microstereolithography

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• 作者：T. S. Demina ; K. N. Bardakova ; E. A. Svidchenko ; N. V. Minaev…
• 关键词：laser stereolithography ; chitosan ; two ; photon polymerization ; graft copolymers ; lactide ; regenerative medicine
• 刊名：High Energy Chemistry
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：50
• 期：5
• 页码：389-394
• 全文大小：683 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3148
• 卷排序：50

文摘

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.