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  • Title: Locust bean gum/gellan gum double-network hydrogels with superior self-healing and pH-driven shape-memory properties.
    Author: Lv Y, Pan Z, Song C, Chen Y, Qian X.
    Journal: Soft Matter; 2019 Aug 14; 15(30):6171-6179. PubMed ID: 31318005.
    Abstract:
    In this work, we prepared locust bean gum (LBG)/gellan gum (Gg) double network (DN) hydrogels based on pH-sensitive borate-ester bonds in the LBG network and hydrogen-bond-associated double-helix bundles in the Gg network by using two novel natural polysaccharide polymers. The DN hydrogels with optimized Gg and borax concentrations exhibit good mechanical properties (the fracture tensile stress is almost three times that of the LBG single network hydrogel). Because of their unique thermo- and pH-sensitive DN structure, the LBG/Gg DN hydrogels also show excellent self-healing, thermo-processability, and pH-driven shape memory properties. Such novel DN hydrogels demonstrate strong potentiality in many challenging applications such as biomedicine, soft robotics and other fields.
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