Preparation method and application of conductive hydrogel with multiple shape memories and high toughness

• Main Authors: XIN YUE, LIANG JIONGHONG, GAO WENSHUO
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention provides a preparation method and application of conductive hydrogel with multiple shape memories and high toughness. The preparation method comprises the following steps: mixing a certain amount of dialdehyde carboxymethyl cellulose serving as a cross-linking agent with a polymer, and carrying out ultrasonic treatment; then mixing with PVA (Polyvinyl Alcohol); adding a conductive substance, then adding a thermal initiator ammonium persulfate (APS) into the mixed solution, then injecting the mixed solution into a glass mold, heating for 10 hours at 50 DEG C, and then carrying out circulating freeze thawing to obtain the required hydrogel. The hydrogel material prepared by the method has multiple shape memories, can respond to temperature, pH and metal ions and does not conflict with one another; the sensor has high sensitivity and excellent self-repairing performance, and can be applied to human motion monitoring; the dialdehyde carboxymethyl cellulose is used as a cross-linking agent, can form