silk with a nanoscale porous architecture significantly deforms in response to changes in relative humidity. Despite the increasing amount of water adsorption and water-responsive strain with increasing porosity of the silk, there is a range of porosities that result in silk's optimal water-responsive energy density at 3.1 MJ m. Our findings show the possibility of controlling water-responsive materials' swelling pressure by controlling their nanoporosities.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d2sm01601j | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advanced nerve regeneration enabled by neural conformal electronic stimulators enhancing mitochondrial transport.
Bioact Mater
September 2024
Department of Orthopedics, Xijing Hospital, The Fourth Military Medical University, Xi'an, 710032, China.
Addressing peripheral nerve defects remains a significant challenge in regenerative neurobiology. Autografts emerged as the gold-standard management, however, are hindered by limited availability and potential neuroma formation. Numerous recent studies report the potential of wireless electronic system for nerve defects repair.
View Article and Find Full Text PDFMechanically robust and personalized silk fibroin-magnesium composite scaffolds with water-responsive shape-memory for irregular bone regeneration.
Nat Commun
May 2024
School of Materials Science and Engineering, Peking University, Beijing, 100871, China.
The regeneration of critical-size bone defects, especially those with irregular shapes, remains a clinical challenge. Various biomaterials have been developed to enhance bone regeneration, but the limitations on the shape-adaptive capacity, the complexity of clinical operation, and the unsatisfied osteogenic bioactivity have greatly restricted their clinical application. In this work, we construct a mechanically robust, tailorable and water-responsive shape-memory silk fibroin/magnesium (SF/MgO) composite scaffold, which is able to quickly match irregular defects by simple trimming, thus leading to good interface integration.
View Article and Find Full Text PDFWater-Responsive Self-Contractive Silk-Based Skin Anti-Aging Tensioners with Customizable Biofunctions.
Adv Healthc Mater
October 2024
Department of Burns and Plastic Surgery & Department of Plastic Surgery and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201900, China.
Skin anti-aging treatments have become increasingly popular. Currently, the prevalent treatment method involves implanting skin tension regulation threads (skin lifting threads) under the skin, and radiofrequency treatments. In this study, inspired by the natural supercontraction of spider silk, the molecular structure of silk fibroin fibers is modulated into an oriented configuration.
View Article and Find Full Text PDFEnvironmental-friendly, flexible silk fibroin-based film as dual-responsive shape memory material.
Int J Biol Macromol
June 2024
National Local Joint Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University, Wuhan 430200, China. Electronic address:
Bio-based shape memory materials have attracted wide attention due to their biocompatibility, degradability and safety. However, designing and manufacturing wearable bio-based shape memory films with excellent flexibility and toughness is still a challenge. In this work, silk fibroin substrate with a β-sheet structure was combined with a tri-block shape memory copolymer to prepare a transparent composited shape memory film.
View Article and Find Full Text PDFViscoelastic Response in Hydrous Polymers: The Role of Hydrogen Bonds and Microstructure.
Nano Lett
March 2024
Sustainable Materials and Chemistry, Department of Wood Technology and Wood-based Composites, University of Göttingen, Büsgenweg 4, Göttingen 37077, Germany.
Water responsive polymers represent a remarkable group of soft materials, acting as a laboratory for diverse water responsive physical phenomena and cutting-edge biology-electronics interfaces. We report on peculiarly distinctive viscoelastic behaviors of the biobased water responsive polymer cellulose 10-undecenoyl ester, while biobased regenerated cellulose displays stronger hydroplastic behaviors. We discovered a novel hydrous deformation mechanism involving the stretching of hydrogen bonds mediated by hydroxyl groups and water molecules, serving as a crucial factor in accommodating deformations.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!