A novel xanthan gum-based conductive hydrogel with excellent mechanical, biocompatible, and self-healing performances. (1st November 2020)

• Record Type: Journal Article
• Authors: Hua, Dawei; Gao, Shuting; Zhang, Mengjie; Ma, Wenjing; Huang, Chaobo
• Is Part Of: Carbohydrate polymers. Volume 247(2020)
• Publication Date: 2020-11-01
• Subjects: Xanthan gum -- Tough hydrogel -- Self-healing -- pH-sensitivity -- Conductive; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.116743
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: A tough, conductive and self-healing xanthan gum hydrogel (XGH) was obtained. XGH showed good mechanical and shape recovery properties. XGH displayed remarkable resistance to fatigue and harsh environments. XGH exhibited pH-dependent swelling and self-healing behaviors. Abstract: Tough and conductive hydrogels are promising materials for various applications. However, it remains a great challenge to develop an integrated hydrogel combining outstanding mechanical, conductive, and self-healing performances. Herein, we prepared a conductive, self-healing, and tough hydrogel by constructing synergistic multiple interaction among montmorillonite (MMT), Poly (acrylamide-co-acrylonitrile) (P(AAm-co-AN)), xanthan gum (XG) and ferric ion (Fe 3+ ). The obtained xanthan gum/montmorillonite/Poly (acrylamide-co-acrylonitrile) (XG/MMT/PAAm) hydrogels showed high strain stress (0.48 MPa) and compressive stress (5.9 MPa) as well as good shape recovery after multiple loading–unloading cycle tests. Moreover, the XG/MMT/PAAm hydrogels have distinctive features such as remarkable resistance to fatigue and harsh environments, insensitivity to notch, conductive, biocompatible, pH-dependent swelling behaviors and self-healing. Therefore, the as-fabricated hydrogel delivers a new prospect for its applications in various fields, such as flexible conductive device and tissue engineering.