Patent ID: 8586148
Filing Date: 2013-11-19
Classification: D01D,D04H

Abstract:
1. An electrospinning method comprising: providing a nozzle fluidically coupled to a source of polymer ink; providing a substrate adjacent to the nozzle; applying a first voltage to the nozzle to initiate electrospinning of the polymer ink onto the substrate, wherein the first voltage is within the range of about 400V to about 1000V; reducing the voltage to a second, lower voltage wherein the voltage is within the range of about 600V to about 150V; moving the substrate in at least one of the x, y, and z directions relative to the nozzle at different speeds so as to alter the diameter of polymer ink reaching the substrate; and wherein the polymer ink comprises less than 3.0 (wt %) PEO having a molecular weight of about 4,000,000.