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Compartmentalized Jet Polymerization as a High-Resolution Process to Continuously Produce Anisometric Microgel Rods with Adjustable Size and Stiffness
Authors
Onur Bakirman
Laura De Laporte
+7 more
David B. Gehlen
Luis P.B. Guerzoni
Tamás Haraszti
Alexander Jans
Andreas J.D. Krüger
Alexander J.C. Kuehne
Dirk Rommel
Publication date
1 January 2019
Publisher
Weinheim : Wiley-VCH
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Abstract
In the past decade, anisometric rod-shaped microgels have attracted growing interest in the materials-design and tissue-engineering communities. Rod-shaped microgels exhibit outstanding potential as versatile building blocks for 3D hydrogels, where they introduce macroscopic anisometry, porosity, or functionality for structural guidance in biomaterials. Various fabrication methods have been established to produce such shape-controlled elements. However, continuous high-throughput production of rod-shaped microgels with simultaneous control over stiffness, size, and aspect ratio still presents a major challenge. A novel microfluidic setup is presented for the continuous production of rod-shaped microgels from microfluidic plug flow and jets. This system overcomes the current limitations of established production methods for rod-shaped microgels. Here, an on-chip gelation setup enables fabrication of soft microgel rods with high aspect ratios, tunable stiffness, and diameters significantly smaller than the channel diameter. This is realized by exposing jets of a microgel precursor to a high intensity light source, operated at specific pulse sequences and frequencies to induce ultra-fast photopolymerization, while a change in flow rates or pulse duration enables variation of the aspect ratio. The microgels can assemble into 3D structures and function as support for cell culture and tissue engineering. © 2019 DWI – Leibniz Institute for Interactive Materials. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei
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Repositorium für Naturwissenschaften und Technik (TIB Hannover)
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oai:oa.tib.eu:123456789/7621
Last time updated on 23/07/2022
Publikationsserver der RWTH Aachen University
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