Bundle Formation in Biomimetic Hydrogels.
Identifieur interne : 002279 ( Main/Exploration ); précédent : 002278; suivant : 002280Bundle Formation in Biomimetic Hydrogels.
Auteurs : Maarten Jaspers [Pays-Bas] ; A C H. Pape [Pays-Bas] ; Ilja K. Voets [Pays-Bas] ; Alan E. Rowan [Pays-Bas] ; Giuseppe Portale [France] ; Paul H J. Kouwer [Pays-Bas]Source :
- Biomacromolecules [ 1526-4602 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Hydrogels, Polymers.
- chemistry : Extracellular Matrix.
- Biomimetics, Rheology, Scattering, Small Angle, X-Ray Diffraction.
Abstract
Bundling of single polymer chains is a crucial process in the formation of biopolymer network gels that make up the extracellular matrix and the cytoskeleton. This bundled architecture leads to gels with distinctive properties, including a large-pore-size gel formation at very low concentrations and mechanical responsiveness through nonlinear mechanics, properties that are rarely observed in synthetic hydrogels. Using small-angle X-ray scattering (SAXS), we study the bundle formation and hydrogelation process of polyisocyanide gels, a synthetic material that uniquely mimics the structure and mechanics of biogels. We show how the structure of the material changes at the (thermally induced) gelation point and how factors such as concentration and polymer length determine the architecture, and with that, the mechanical properties. The correlation of the gel mechanics and the structural parameters obtained from SAXS experiments is essential in the design of future (synthetic) mimics of biopolymer networks.
DOI: 10.1021/acs.biomac.6b00703
PubMed: 27409975
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">Bundling of single polymer chains is a crucial process in the formation of biopolymer network gels that make up the extracellular matrix and the cytoskeleton. This bundled architecture leads to gels with distinctive properties, including a large-pore-size gel formation at very low concentrations and mechanical responsiveness through nonlinear mechanics, properties that are rarely observed in synthetic hydrogels. Using small-angle X-ray scattering (SAXS), we study the bundle formation and hydrogelation process of polyisocyanide gels, a synthetic material that uniquely mimics the structure and mechanics of biogels. We show how the structure of the material changes at the (thermally induced) gelation point and how factors such as concentration and polymer length determine the architecture, and with that, the mechanical properties. The correlation of the gel mechanics and the structural parameters obtained from SAXS experiments is essential in the design of future (synthetic) mimics of biopolymer networks.</div>
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