Journal
MATERIALS LETTERS
Volume 213, Issue -, Pages 366-369Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.11.027
Keywords
Biomaterials; Polymers; Porous Materials; Solid State Foaming
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Dual pore network polymer foams are categorized as foams having two interconnected pore networks of varying sizes. Potential applications of these foams are in the biomedical field for artificial organ development and high throughput drug testing. In this study, a cost effective and scalable processing technique for fabrication of dual pore network polymer foams via solid state foaming of additively manufactured templates is presented. Initially, a polymer template with either circular or hexagonal features is additively manufactured with the spacing between the features forming the first porous network. The second porous network is obtained by subjecting the additively manufactured template to solid state foaming. The resulting foams have porosity in excess of 80% with the pore sizes in the larger and smaller pore network on the order of 200 mm and 50 mm respectively. (C) 2017 Elsevier B.V. All rights reserved.
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