Journal article
Quantitative Correlation between Bound Water and Mechanical Stress Relaxation in Dehydrated Metal-Coordinate Polymer Networks
Chemistry of materials, v 34(23), pp 10329-10337
13 Dec 2022
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Dynamic metal-coordinate cross-links impart smart and superior physicochemical properties in their deployments in many biological and artificial metallopolymer networks in various stages of solidification via dehydration. Nonetheless, a quantitative model that describes to what extent the dynamic behaviors of metal-coordinate bond transition from the hydrated to the dehydrated state is missing. In previous work, we have shown that local water binding helps metal-coordinate bonds to maintain their dynamic properties during bulk network dehydration, thereby offering mechanical damping properties to the network deep into the dehydrated solid state. Using mussel-inspired hydrogels with chemically tuned fractions of metal-coordinate cross-links, here, we reveal the direct scaling relationship between the macroscopic relaxation time of the dehydrated network and the amount of microscopic water bound by metal-coordinate cross-links. This quantitative relationship between dehydrated metal-coordinate network mechanics and metal-coordinate cross-link dynamics may help us better understand and emulate the sustainable process of solidification via spatiotemporally controlled dehydration of load-bearing materials on wide display in nature.
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Details
- Title
- Quantitative Correlation between Bound Water and Mechanical Stress Relaxation in Dehydrated Metal-Coordinate Polymer Networks
- Creators
- Sungjin Kim - Massachusetts Institute of TechnologyMyungwoon Lee - Massachusetts Institute of TechnologyMei Hong - Massachusetts Institute of TechnologyNiels Holten-Andersen - MIT, Dept Mat Sci & Engn, Cambridge, MA 02142 USA
- Publication Details
- Chemistry of materials, v 34(23), pp 10329-10337
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 9
- Grant note
- 12th Samsung Scholarship Program; Samsung DMR-1419807 / MRSEC Program of the National Science Foundation; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000892091600001
- Scopus ID
- 2-s2.0-85143627386
- Other Identifier
- 991021230003604721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary