Tubuliform silk is one of the seven different types of spider silks, which is well known for its unique tensile behaviour with Flat Tensile Stress⁻Strain (FTSS) curve. It is found that anisotropic microstructure of β-sheets is responsible for this property. In recent years, bioinspired approaches to engineer fibres supported by modern manufacturing systems have been attracting considerable interest. The present paper aims to investigate a strategy to biomimic the FTSS behaviour of tubuliform silk in synthetic polymer composite fibres by blending polyurethane (PU) and regenerated silk fibroin (RSF) at different ratios. Wet spinning of composite fibres results in the reconstruction of β-sheets in the synthetic fibre matrix. PU/RSF composite fibre at a ratio of 75/25 produce a tensile curve with FTSS characteristics. Secondary structural changes in RSF and interchain directions of β-sheets within the fibre are studied using Fourier Transform Infra-red (FTIR) spectroscopy and Transmission Electron Microscopy (TEM), respectively. Interestingly, results of TEM patterns confirm transverse anisotropic properties of RSF β-sheets. The composite fibres also display tuneable mechanical properties with respect to RSF contents.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414937 | PMC |
| http://dx.doi.org/10.3390/polym10030333 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Effect of Polyethylene Fiber and Flowable Resin Composite on Fracture Resistance in the Restoration of Large MOD Cavities.
J Esthet Restor Dent
January 2025
Department of Restorative Dentistry, Faculty of Dentistry, Kırıkkale University, Kırıkkale, Türkiye.
Objective: This in vitro study aims to evaluate the effect of placing polyethylene fibers used in large Class II MOD (mesio-occlusion-distal) cavities into different flowable resin composites and in different positions on the fracture resistance of the restoration.
Materials And Methods: Ninety healthy human molars were used in the study. No treatment was performed on 10 of these teeth and they were used as the control group.
Plasma-Activated Water/Ultrasound as a Green Method to Modify Wood Fiber By-Product: Insights of Their Mechanical Performance in Polylactic Acid-Based Biofilms.
Biopolymers
March 2025
Centro de Investigación en Química Aplicada, Saltillo, Coahuila, Mexico.
Exploring new ecological and simultaneous processes to modify wood fibers (WF) by-products is a required pathway toward circular economy and sustainability. Thus, plasma-activated water (PAW) and ultrasound (U) were employed as alternative methods to modify WF in a continuous process. Such treatments promoted the etching and cavities on the WF surface that destabilized the hydrogen bonds of the hemicellulose and lignin molecules, increasing the cellulose fraction.
View Article and Find Full Text PDFTracking solid electrolyte interphase dynamics using operando fibre-optic infra-red spectroscopy and multivariate curve regression.
Nat Commun
January 2025
Chimie du Solide et de l'Énergie, UMR 8260, Collège de France, Paris, France.
As batteries drive the transition to electrified transportation and energy systems, ensuring their quality, reliability, lifetime, and safety is crucial. While the solid electrolyte interphase (SEI) is known to govern these performance characteristics, its dynamic nature makes understanding its nucleation, growth, and composition an ambitious, yet elusive aspiration. This work employs chalcogenide fibres embedded in negative electrode materials for operando Infra-red Fibre-optic Evanescent Wave Spectroscopy (IR-FEWS), combined with Multivariate Curve Resolution by Alternating Least Squares (MCR-ALS) algorithms for spectra analysis.
View Article and Find Full Text PDFFabrication and applications of biofunctional collagen biomaterials in tissue engineering.
Int J Biol Macromol
January 2025
Polymer Lab, Chemistry Department, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Darul Ridzuan, Malaysia. Electronic address:
Collagen is extensively used in tissue engineering for various organ tissue regeneration due to the main component of human organ extracellular matrix (ECM) and their inherent nature bioactivity. Collagen various types naturally exist in different organ ECMs. Collagen fabricated with natural ECM mimics architecture, composition and mechanical properties for various organ tissue regeneration.
View Article and Find Full Text PDFAntifouling ONOO electrochemical sensor based on copper-platinum bimetallic nanoparticle-modified N-doped biomass porous carbon fibres composites.
Talanta
January 2025
College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China.
Monitoring reactive nitrogen species (RNS) in complex biological media is essential for evaluating the health status of living organisms; however, biofouling on the sensor surface restricts its applications. To overcome this issue, we developed an antifouling electrochemical sensing platform using copper-platinum bimetallic nanoparticles/N-doped biomass porous carbon fibres (Cu-PtNPs/N-BCF) for directly detecting peroxynitrite anion (ONOO), a major type of RNS. Cyclic voltammetry measurements demonstrated that the Cu-PtNPs/N-BCF-2 nanocomposite, synthesised at a molar ratio of 1:1 between Co and Zn, exhibited exceptional electrocatalytic activity for ONOO oxidation.
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!