Phase behavior and rheological properties of polyelectrolyte inks for direct-write assembly
Phase behavior and rheological properties of polyelectrolyte inks for direct-write assembly
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DOI：
10.1021/la048228d
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发表时间：
2005-01-04
期刊：
影响因子：
3.9
通讯作者：
Lewis, JA
中科院分区：
文献类型：
--
作者：
Gratson, GM;Lewis, JA
三维（3-D）结构具有微米级的特征，通过直接写入组装的聚电解质油墨(1)。通过在促进多电解质交换反应的溶液条件下混合带相反电荷的物质，我们创造了能够通过微尺度沉积喷嘴流动的浓缩流体。油墨沉积到醇/水混凝储存器中产生的聚电解质细丝可以快速固化，从而实现具有自支撑特征的微周期结构的三维图案。报道了墨水和储液池化学对浓聚电解质复合物的相行为、流变性能和组装的影响，并重点讨论了3d书写的最佳条件。
Three-dimensional (3-D) structures with micron-sized features have been fabricated via the direct-write assembly of polyelectrolyte inks(1). By mixing oppositely charged species under solution conditions that promote polyelectrolyte exchange reactions, we have created concentrated fluids capable of flowing through microscale deposition nozzles. Ink deposition into an alcohol/water coagulation reservoir yielded polyelectrolyte filaments that rapidly solidify to enable three-dimensional patterning of microperiodic structures with self-supporting features. The influence of ink and reservoir chemistry on the phase behavior, rheological properties, and assembly of concentrated polyelectrolyte complexes is reported with an emphasis on the optimal conditions for 3-D writing.