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Int J Biol Macromol ; 273(Pt 1): 133002, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38851613

RÉSUMÉ

Here, a polysaccharide derivative acryloyl chitosan (AcCS) is exploited as macro-crosslinker to synthesize a novel ionogel poly (acrylic acid-co-1-Vinyl-3-butyl imidazolium chloride) (AA-IL/AcCS) via a one-pot method. AcCS provides abundant physical and chemical crosslinking sites contributing to the high mechanical stretchability (elongation at break 600 %) and strength (tensile strength 137 kPa) of AA-IL/AcCS. The high-density of dynamic bonds (hydrogen bonds and electrostatic interactions) in the network of ionogels enables self-healing and self-adhesive features of AA-IL/AcCS. Meanwhile, AA-IL/AcCS exhibits high ionic conductivity (0.1 mS/cm) at room temperature and excellent antifreeze ability (-58 °C). The AA-IL/AcCS-based sensor shows diverse sensory capabilities towards temperature and humidity, moreover, it could precisely detect human motions and handwritings signals. Furthermore, AA-IL/AcCS exhibits excellent bactericidal properties against both gram-positive and gram-negative bacteria. This work opens the possibility of polysaccharides as a macro-crosslinkers for preparing ionogel-based sensors for wearable electronics.


Sujet(s)
Chitosane , Congélation , Chitosane/composition chimique , Réactifs réticulants/composition chimique , Gels/composition chimique , Antibactériens/composition chimique , Antibactériens/pharmacologie , Conductivité électrique , Adhésifs/composition chimique , Humains , Dispositifs électroniques portables , Résistance à la traction
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