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- Title
Self-(Un)rolling Biopolymer Microstructures: Rings, Tubules, and Helical Tubules from the Same Material.
- Authors
Ye, Chunhong; Nikolov, Svetoslav V.; Calabrese, Rossella; Dindar, Amir; Alexeev, Alexander; Kippelen, Bernard; Kaplan, David L.; Tsukruk, Vladimir V.
- Abstract
We have demonstrated the facile formation of reversible and fast self-rolling biopolymer microstructures from sandwiched active-passive, silk-on-silk materials. Both experimental and modeling results confirmed that the shape of individual sheets effectively controls biaxial stresses within these sheets, which can self-roll into distinct 3D structures including microscopic rings, tubules, and helical tubules. This is a unique example of tailoring self-rolled 3D geometries through shape design without changing the inner morphology of active bimorph biomaterials. In contrast to traditional organic-soluble synthetic materials, we utilized a biocompatible and biodegradable biopolymer that underwent a facile aqueous layer-by-layer (LbL) assembly process for the fabrication of 2D films. The resulting films can undergo reversible pH-triggered rolling/unrolling, with a variety of 3D structures forming from biopolymer structures that have identical morphology and composition.
- Subjects
BIOPOLYMERS; MICROSTRUCTURE; HELICAL structure; MOLECULAR structure; BIOMATERIALS
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 29, p8610
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201502485