Preparation and Properties of the Self-repairing Ionogels Based on Alginic Acid
To solve the problems of difficult degradation,high cost,and great environmental pollution for the traditional synthetic polymer-based ionogels,the chemically cross-linked bio-based ionogel with a good self-repair ability based on natural alginic acid was prepared via chemical modifying and cross-linking reaction.The rheological test reveals that the modulus of the ionogel increases with the increase of alginic acid and cross-linker contents,and it could maintain the gel structure even at a high temperature of 150℃.The compressive strength of the ionogel increases with the increase of alginic acid content,and the compressive strength reaches 1.02 MPa,indicating excellent compressive properties.Electrochemical tests reveal that the ionogel has good conductivity,and the ionic conductivity at room temperature exceeds 0.3 mS/cm.More importantly,the ionogel could completely self-repair in 6 h at room temperature without any auxiliary mean,showing a good self-repair ability.This study provides an effective way to develop the high-performance bio-based ionogels with a good self-repair ability.
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维普
