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Title: 3D printing of core-shell capsule composites for post-reactive and damage sensing applications
Author(s): Rupp, Harald
Binder, Wolfgang H.Look up in the Integrated Authority File of the German National Library
Issue Date: 2020
Type: Article
Language: English
Abstract: 3D printing of multicomponent materials as an advantageous method over traditional mold casting methods is demonstrated, developing small core–shell capsule composites fabricated by a two-step 3D printing process. Using a two-print-head system (fused deposition modeling extruder and a liquid inkjet print head), micro-sized capsules are manufactured in sizes ranging from 100 to 800 µm. The thermoplastic polymer poly(ε-caprolactone) (PCL) is chosen as matrix/shell material due to its optimal interaction with the embedded hydrophobic liquids. First, the core–shell capsules are printed with model liquids and pure PCL to optimize the printing parameters and to ensure fully enclosed capsules inside the polymer. As a proof of concept, novel “click” reaction systems, used in self-healing and stress-detection applications, are manufactured in which PCL composites with nano- and micro-fillers are combined with reactive, encapsulated liquids. The so generated 3D printed core–shell capsule composite can be used for post-printing reactions and damage sensing when combined with a fluorogenic dye.
Open Access: Open access publication
License: (CC BY-NC 4.0) Creative Commons Attribution NonCommercial 4.0(CC BY-NC 4.0) Creative Commons Attribution NonCommercial 4.0
Sponsor/Funder: Publikationsfond MLU
Journal Title: Advanced materials technologies
Publisher: Wiley
Publisher Place: Weinheim
Volume: 5
Issue: 11
Original Publication: 10.1002/admt.202000509
Appears in Collections:Open Access Publikationen der MLU

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