期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 29, 页码 8490-8493出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201502485
关键词
biomaterials; biopolymers; layer-by-layer assembly; microstructures; silk
资金
- National Science Foundation [CBET-1402712, DMR-1255288, DMR-1505234]
- Air Force Office for Scientific Research [FA9550-14-1-0269, FA9550-14-1-0015]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1402712] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1255288] Funding Source: National Science Foundation
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 utilizeda 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.
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