Photothermal Welding, Melting, and Patterned Expansion of Nonwoven Mats of Polymer Nanofibers for Biomedical and Printing Applications

Angewandte Chemie
Tong WuYounan Xia

Abstract

We report a simple method for the photothermal welding of nonwoven mats of electrospun nanofibers by introducing a near-infrared (NIR) dye such as indocyanine green. By leveraging the strong photothermal effect of the dye, the nanofibers can be readily welded at their cross points or even over-welded (i.e., melted and/or fused together) to transform the porous mat into a solid film upon exposure to a NIR laser. While welding at the cross points greatly improves the mechanical strength of a nonwoven mat of nanofibers, melting and fusion of the nanofibers can be employed to fabricate a novel class of photothermal papers for laser writing or printing without chemicals or toner particles. By using a photomask, we can integrate photothermal welding with the gas foaming technique to pattern and then expand nonwoven mats into 3D scaffolds with well-defined structures. This method can be applied to different combinations of polymers and dyes, if they can be co-dissolved in a suitable solvent for electrospinning.

References

Oct 27, 2004·Nature Materials·Jiaxing Huang, Richard B Kaner
Jun 23, 2007·Angewandte Chemie·Andreas Greiner, Joachim H Wendorff
Jul 13, 2011·Environmental Science & Technology·Chunyang Liao, Kurunthachalam Kannan
Feb 7, 2012·Nature Materials·Erik C GarnettMark L Brongersma
Mar 14, 2014·Angewandte Chemie·Qiuping QianYapei Wang
May 23, 2014·Nature Materials·William L MurphyAdam J Engler
Sep 2, 2014·Toxicology Letters·Simo P PorrasTiina Santonen
Feb 16, 2016·Carbohydrate Polymers·Wenyu WangTong Lin
Mar 24, 2016·Angewandte Chemie·Wei WengHuisheng Peng
Oct 7, 2016·Advanced Healthcare Materials·Jiang JiangJingwei Xie
May 26, 2018·ACS Applied Materials & Interfaces·You MengFukai Shan

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