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A self-healable stretchable hydrogel system that can be readily synthesized while also possessing robust compressive strength has immense potential for regenerative medicine. Herein, we have explored the addition of commercially available unfunctionalized polysaccharides as a route to synthesize self-healing, stretchable poly(ethylene glycol) (PEG) interpenetrating networks (IPNs) as extracellular matrix (ECM) mimics. The introduction of self-healing and stretchable properties has been achieved while maintaining the robust mechanical strength of the orginal, single network PEG-only hydrogels (ultimate compressive stress up to 2.4 MPa). This has been accomplished without the need for complicated and expensive functionalization of the natural polymers, enhancing the translational applicability of these new biomaterials.
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http://dx.doi.org/10.1039/c8bm00872h | DOI Listing |
ACS Nano
September 2025
Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
Vagus nerve stimulation (VNS) is a promising therapy for neurological and inflammatory disorders across multiple organ systems. However, conventional rigid interfaces fail to accommodate dynamic mechanical environments, leading to mechanical mismatches, tissue irritation, and unstable long-term interfaces. Although soft neural interfaces address these limitations, maintaining mechanical durability and stable electrical performance remains challenging.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.
The increasing emphasis on environmental sustainability has driven the development of products derived from recycled plastics; however, their applications remain largely confined to packaging and beverage containers due to high recycling costs and limited economic viability. This study focuses on upcycling plastic waste by depolymerizing and repolymerizing waste polyethylene terephthalate (PET) into thermoplastic polyester elastomers (TPEE). To enhance the functional properties of the resulting material, an azobenzene-containing polymer (PAzo) is incorporated, leveraging its reversible photoinduced solid-to-liquid phase transition under ultraviolet and visible light irradiation.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China. Electronic address:
Human skin exhibits remarkable self-healing and responsiveness, attributed to dynamic disulfide (SS) bonds. However, traditional elastomer polymers often suffer from poor mechanical performance, low stability, and weak signal-capture capabilities due to metastability and insufficient interchain interactions. To overcome these limitations, a novel strategy combining inverse vulcanization and iron(III)-carboxylate coordination was proposed to construct a multifunctional, recyclable elastomer named PTCFe.
View Article and Find Full Text PDFAdv Colloid Interface Sci
November 2025
Department of Polymer Engineering, Faculty of Engineering, Lorestan University, Khorramabad 68151-44316, Iran. Electronic address:
Nowadays, functionalized ionogels have attracted considerable research attention because of their superior benefits including excellent mechanical properties, conductivity, transparency, stretchability, adhesivity, biocompatibility, recyclability, shape memory, 3D printability, and self-healability. The self-healing performance implements the ability to autonomously repair the damaged ionogels through the covalent or non-covalent reversible bonds without any external intervention at ambient conditions. The healing strategy is influenced by the type of polymer, ionic liquid, and synthesis procedures.
View Article and Find Full Text PDFCarbohydr Polym
November 2025
Department of Plant, Food, and Environmental Sciences, Faculty of Agricultural Campus, Dalhousie University, Truro, NS, Canada.
Inspired by the high-density hydrogen bonds in spider silk and the mussel adhesive mechanism, pullulan-tannic acid (TA) hydrogels with high stretchability, toughness, adhesiveness, and rapid self-healing capabilities were successfully fabricated via a hydrogen-bond-driven co-assembly strategy combined with controlled evaporation. Infrared spectroscopy confirmed the presence of hydrogen bonds between pullulan and TA, while scanning electron microscopy revealed the porous network structure of the hydrogels. The tensile strength (TS), Young's modulus (YM), and toughness values of PulTA5 hydrogels were 0.
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