Switching microobjects from low to high aspect ratios using a shape-memory effect
- Spherical particles from shape-memory polymers (SMP) can be stretched to ellipsoids with high aspect ratio (AR) and temporarily stabilized. They can switch back to low AR upon thermal stimulation. Here, the creation of an alternative shape-switching capability of particles from low to high AR is introduced, where a SMP matrix from polyvinyl alcohol (PVA) is used to create crosslinked high AR particles and to program the embedded micrometer-sized particles from a second SMP (oligo(epsilon-caprolactone) micronetworks, MN) with a low switching temperature T-sw. This programming proceeds through shape-recovery of the PVA matrix, from which the MN are harvested by PVA matrix dissolution. The use of a dissolvable SMP matrix may be a general strategy to efficiently create systems with complex moving capabilities.
| Author details: | Fabian FrießGND, Andreas LendleinORCiDGND, Christian WischkeORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1039/d1sm00947h |
| ISSN: | 1744-6848 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/34605513 |
| Title of parent work (English): | Soft matter |
| Publisher: | Royal Society of Chemistry |
| Place of publishing: | London |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2021/10/04 |
| Publication year: | 2021 |
| Release date: | 2024/01/05 |
| Volume: | 17 |
| Issue: | 41 |
| Number of pages: | 6 |
| First page: | 9326 |
| Last Page: | 9331 |
| Funding institution: | Helmholtz Association |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
| Publishing method: | Open Access / Hybrid Open-Access |
| License (English): |  Creative Commons - Namensnennung 3.0 Unported |
