Parameter study for the production of semi-crystalline polyetherimide particles via liquid-liquid phase separation and precipitation

Unger L, Dechet M, Fischer S, Schmidt J, Bück A (2022)

Publication Type: Conference contribution

Publication year: 2022

Journal

Procedia CIRP Curran

Publisher: Elsevier B.V.

Book Volume: 111

Pages Range: 247-252

Conference Proceedings Title: Procedia CIRP

Event location: Erlangen DE

DOI: 10.1016/j.procir.2022.08.059

Abstract

The production of micron-sized polymeric particles via liquid-liquid phase separation (LLPS) and precipitation was under investigation, as this study is a continuation of previous activities. Throughout the production process of LLPS, parameter variations were conducted in order to adjust the final product properties. These include the particle size distribution, the melting point, the specific melting enthalpy, the obtained particle shape and powder flowability properties. The herein adjusted parameters involve the polymer fraction in the solution, the rotation speed of the stirring unit and the cooling rate after dissolving the polymer-solvent mixture. The cooling rate and the polymer fraction defined both, the thermal and structural properties of the obtained semi-crystalline particles. A superior impact on the particle size distribution and morphology was obtained from the rotation speed of the stirring element. Thus, the resulting properties of precipitated microparticles can explicitly be controlled via the applied production parameters.

Authors with CRIS profile

Laura Unger Professur für Partikeltechnik Maximilian Dechet Lehrstuhl für Partikelsynthese (LFG) Jochen Schmidt Lehrstuhl für Partikelsynthese (LFG) Andreas Bück Professur für Partikeltechnik

Involved external institutions

EOS GmbH Electro Optical System DE Germany (DE)

How to cite

APA:

Unger, L., Dechet, M., Fischer, S., Schmidt, J., & Bück, A. (2022). Parameter study for the production of semi-crystalline polyetherimide particles via liquid-liquid phase separation and precipitation. In M. Schmidt, F. Vollertsen, B.M. Colosimo (Eds.), Procedia CIRP (pp. 247-252). Erlangen, DE: Elsevier B.V..

MLA:

Unger, Laura, et al. "Parameter study for the production of semi-crystalline polyetherimide particles via liquid-liquid phase separation and precipitation." Proceedings of the 12th CIRP Conference on Photonic Technologies, LANE 2022, Erlangen Ed. M. Schmidt, F. Vollertsen, B.M. Colosimo, Elsevier B.V., 2022. 247-252.

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