525 Solutions, Inc.;THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA
发明人:
Robin D. Rogers,Oleksandra Zavgorodnya,Julia L. Shamshina,Gabriela Gurau
申请号：
US16296776
公开号：
US20190275199A1
申请日:
2019.03.08
申请国别(地区):
US
年份:
2019
代理人:
摘要：
Compositions and methods of printing a three-dimensional (3D) article from a printing composition comprising a biopolymer are described. In addition to the biopolymer, the printing composition includes an ionic liquid solvent and optionally, a synthetic polymer. The method of printing the 3D article includes extruding the printing composition from a deposition nozzle moving relative to a substrate, depositing one or more layers comprising the printing composition in a predetermined pattern on the substrate, and treating the one or more layers to form the 3D article. The one or more layers deposited on the substrate can exhibit sufficient stiffness to maintain its shape once deposited, thus depositing the printing composition into a mold is not required. Treating the one or more layers can comprise coagulating the biopolymer and/or removing the ionic liquid solvent using an aqueous solvent.
