3D printable light-responsive polymers

被引:95
作者
Roppolo, I. [1 ]
Chiappone, A. [1 ]
Angelini, A. [2 ]
Stassi, S. [2 ]
Frascella, F. [2 ]
Pirri, C. F. [1 ,2 ]
Ricciardi, C. [2 ]
Descrovi, E. [2 ]
机构
[1] Ist Italiano Tecnol, Ctr Sustainable Future Technol, Corso Trento 21, I-10129 Turin, Italy
[2] Politecn Torino, Dipartimento Sci Appl &Tecnol, C So Duca Abruzzi 24, I-10129 Turin, Italy
关键词
MECHANICAL-PROPERTIES; SILVER NANOPARTICLES; COMPLEX STRUCTURES; AZOBENZENE; DEFORMATION; FILMS; PHOTOFLUIDIZATION; NANOINDENTATION; NANOCOMPOSITES; ARCHITECTURES;
D O I
10.1039/c7mh00072c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
New photo-curable polymers for 3D printing are provided, exhibiting mechanical light-responsivity upon laser irradiation. Azobenzene moieties are employed both as dyes in the 3D printing process and as active groups providing the desired light responsivity. The incorporation of azobenzene units into polymeric matrices allows a reversible and controllable change of the Young's modulus of a crosslinked micrometric structure. Depending on the temperature of operation, laser irradiation induces either a decrease (photo-softening) or an increase (photo-hardening) of the Young's modulus. Such a behaviour can be spatially controlled in order to locally modify the mechanical features of 3D printed objects such as microcantilevers.
引用
收藏
页码:396 / 401
页数:6
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