Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/110767
Title: | Size control of shape switchable micronetworks by fast two-step microfluidic templating |
Author(s): | Frieß, Fabian Lendlein, Andreas Wischke, Christian |
Issue Date: | 2021 |
Type: | Article |
Language: | English |
Abstract: | Shape-memory polymer micronetworks (MN) are micrometer-sized objects that can switch their outer shape upon external command. This study aims to scale MN sizes to the low micrometer range at very narrow size distributions. In a two-step microfluidic strategy, the specific design of coaxial class capillary devices allowed stabilizing the thread of the dispersed phase to efficiently produce precursor particles in the tip-streaming regime at rates up to ~ 170 kHz and final sizes down to 4 µm. In a subsequent melt-based microfluidic photocrosslinking of the methacrylate-functionalized oligo(ɛ-caprolactone) precursor material, MN could be produced without particle aggregation. A comprehensive analysis of MN properties illustrated successful crosslinking, semi-crystalline morphology, and a shape-switching functionality for all investigated MN sizes (4, 6, 9, 12, 22 µm). Such functional micronetworks tailored to and below the dimension of cells can enable future applications in technology and medicine like controlling cell interaction. |
URI: | https://opendata.uni-halle.de//handle/1981185920/112722 http://dx.doi.org/10.25673/110767 |
Open Access: | Open access publication |
License: | (CC BY 4.0) Creative Commons Attribution 4.0 |
Journal Title: | Journal of materials research |
Publisher: | Springer |
Publisher Place: | Berlin |
Volume: | 36 |
Original Publication: | 10.1557/s43578-021-00295-2 |
Page Start: | 3248 |
Page End: | 3257 |
Appears in Collections: | Open Access Publikationen der MLU |
Files in This Item:
File | Description | Size | Format | |
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s43578-021-00295-2.pdf | 1.98 MB | Adobe PDF | View/Open |