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

被引:0
作者
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
机构
[1] Ministry of Health of the Russian Federation,Sechenov First Moscow State Medical University
[2] Russian Academy of Sciences,Institute of Laser and Information Technologies
[3] Russian Academy of Sciences,Enikolopov Institute of Synthetic Polymer Materials
来源
High Energy Chemistry | 2016年 / 50卷
关键词
laser stereolithography; chitosan; two-photon polymerization; graft copolymers; lactide; regenerative medicine;
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学科分类号
摘要
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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页码:389 / 394
页数:5
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