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The development of a high-throughput/ combinatorial workflow for the study of porous polymer networks

Authors Majumdar, Bahr, Crowley, Kallam, Gubbins, Schiele, Weisz, Dirk S, Lenhart, Chisholm B

Received 15 October 2011

Accepted for publication 15 December 2011

Published 11 April 2012 Volume 2012:3 Pages 1—12


Review by Single-blind

Peer reviewer comments 3

Partha Majumdar1, James Bahr1, Elizabeth Crowley1, Alekhya Kallam1, Nathan Gubbins1, Kris Schiele1, Michael Weisz1, Shawn M Dirk3, Joseph L Lenhart4, Bret J Chisholm1,2
1Center for Nanoscale Science and Engineering, 2Department of Coatings and Polymeric Materials, North Dakota State University, Fargo, North Dakota, 3Sandia National Laboratories, Albuquerque, New Mexico, 4US Army Research Laboratory, Aberdeen, Maryland, USA

Abstract: A high-throughput workflow was developed for the study of porous polymers generated using the process of chemically induced phase separation. The workflow includes automated, parallel preparation of liquid blends containing reactive, polymer network-forming precursors and a poragen, as well as a high-throughput poragen extraction process using supercritical CO2. A structure–process–property relationship study was conducted using epoxy-amine cross-linked networks. The experimental design involved variations in polymer network cross-link density, poragen composition, poragen level, and cure temperature. A total of 216 unique compositions were prepared. Changes in opacity of the blends as they cured were monitored visually. Morphology was characterized using a scanning electron microscope on a subset of the 216 samples. The results obtained allowed for the identification of compositional variables and process variables that enabled the production of porous networks.

Keywords: high-throughput, chemically induced phase separation, porous polymer, poragen

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