| Title: |
Enhancing the Mechanical Properties of Injectable Nanocomposite Hydrogels by Adding Boronic Acid/Boronate Ester Dynamic Bonds at the Nanoparticle–Polymer Interface |
| Authors: |
Sánchez, Jesús; Ulloa, Jose; Oyarzún, Yessenia; Ceballos, Matías; Ruiz, Carla; Boury, Bruno; Urbano, Bruno |
| Contributors: |
Universidad de Concepción = University of Concepción Chile (UdeC); Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM); Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM); Université de Montpellier (UM) |
| Source: |
ISSN: 2310-2861 ; Gels ; https://hal.science/hal-04764617 ; Gels, 2024, 10 (10), pp.638. ⟨10.3390/gels10100638⟩. |
| Publisher Information: |
CCSD; MDPI |
| Publication Year: |
2024 |
| Collection: |
Université de Montpellier: HAL |
| Subject Terms: |
boronic acid; dynamic covalent bonds; nanocomposite hydrogel; viscoelastic properties; [SDV.IB.BIO]Life Sciences [q-bio]/Bioengineering/Biomaterials; [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]; [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] |
| Description: |
International audience ; Incorporating nanoparticles into injectable hydrogels is a well-known technique for improving the mechanical properties of these materials. However, significant differences in the mechanical properties of the polymer matrix and the nanoparticles can result in localized stress concentrations at the polymer–nanoparticle interface. This situation can lead to problems such as particle–matrix debonding, void formation, and material failure. This work introduces boronic acid/boronate ester dynamic covalent bonds (DCBs) as energy dissipation sites to mitigate stress concentrations at the polymer–nanoparticle interface. Once boronic acid groups were immobilized on the surface of SiO2 nanoparticles (SiO2-BA) and incorporated into an alginate matrix, the nanocomposite hydrogels exhibited enhanced viscoelastic properties. Compared to unmodified SiO2 nanoparticles, introducing SiO2 nanoparticles with boronic acid on their surface improved the structural integrity and stability of the hydrogel. In addition, nanoparticle-reinforced hydrogels showed increased stiffness and deformation resistance compared to controls. These properties were dependent on nanoparticle concentration. Injectability tests showed shear-thinning behavior for the modified hydrogels with injection force within clinically acceptable ranges and superior recovery. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.3390/gels10100638 |
| Availability: |
https://hal.science/hal-04764617; https://hal.science/hal-04764617v1/document; https://hal.science/hal-04764617v1/file/gels-10-00638.pdf; https://doi.org/10.3390/gels10100638 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.78F1F7CE |
| Database: |
BASE |