Instability-Assisted Direct Writing of Microstructured Fibers Featuring Sacrificial Bonds

Renaud Passieux; Leigh Guthrie; Somayeh Hosseini Rad; Martin Lévesque; Daniel Therriault; Frédérick P Gosselin

doi:10.1002/adma.201500603

Instability-Assisted Direct Writing of Microstructured Fibers Featuring Sacrificial Bonds

Adv Mater. 2015 Jun 24;27(24):3676-80. doi: 10.1002/adma.201500603. Epub 2015 May 15.

Authors

Renaud Passieux¹, Leigh Guthrie¹, Somayeh Hosseini Rad¹, Martin Lévesque¹, Daniel Therriault¹, Frédérick P Gosselin¹

Affiliation

¹ Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.

PMID: 25981207
DOI: 10.1002/adma.201500603

Abstract

A 30 μm-diameter thread of poly(lactic acid) (PLA) dissolved in dichloromethane is deposited on top of the eye of a sewing needle. The deposition robot traces a straight line; the helical shape of the thread is due to the liquid rope coiling instability. This instability is used to fabricate microstructured fibers with tailored mechanical properties.

Keywords: 3D printing; instability; microstructure; sacrificial bonds; toughness.