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Open AccessArticle

A Sacrificial Route for Soft Porous Polymers Synthesized via Frontal Photo-Polymerization

1
Laboratory of the Future (CNRS/SOLVAY), University of Bordeaux, 178 avenue du Docteur Schweitzer, 33600 Pessac, France
2
Institut d’Ingénierie et de Mécanique, (CNRS/Bordeaux INP), University of Bordeaux, 351 Cours de la Libération, 33400 Talence, France
3
IMT Atlantique Bretagne-Pays de la Loire, Technopôle Brest-Iroise, 29200 Brest, France
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(5), 1008; https://doi.org/10.3390/polym12051008
Received: 17 March 2020 / Revised: 15 April 2020 / Accepted: 16 April 2020 / Published: 27 April 2020
(This article belongs to the Special Issue Cellular Polymeric Materials)
Within the very large range of porous polymers and a related immense scope of applications, we investigate here a specific route to design soft porous polymers with controlled porosity: we use aqueous-based formulations of oligomers with mineral particles which are solidified into a hydrogel upon photo-polymerization; the embedded particles are then chemically etched and the hydrogel is dried to end up with a soft porous polymeric scaffold with micron-scale porosity. Morphological and physical features of the porous polymers are measured and we demonstrate that the porosity of the final material is primarily determined by the amount of initially dispersed sacrificial particles. In addition, the liquid formulations we use to start with are convenient for a variety of material forming techniques such as microfluidics, embossing, etc., which lead to many different morphologies (monoliths, spherical particles, patterned substrates) based on the same initial material. View Full-Text
Keywords: hydrogels; photo-polymerization; sacrificial particles; porous polymers; microfluidics hydrogels; photo-polymerization; sacrificial particles; porous polymers; microfluidics
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MDPI and ACS Style

Turani-i-Belloto, A.; Brunet, T.; Khaldi, A.; Leng, J. A Sacrificial Route for Soft Porous Polymers Synthesized via Frontal Photo-Polymerization. Polymers 2020, 12, 1008.

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