Preparation method of 3D-printable dual-network piezoelectric hydrogel

• Main Authors: WEI XIAOTONG, HAN JING, LI YINGCHUN, WANG WENSHENG, LI JIE, DONG YIWEI, HU ZHIRUI
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention belongs to the technical field of hydrogel, and particularly relates to a preparation method of 3D-printable dual-network piezoelectric hydrogel, PVDF-TrFE is used as a piezoelectric material, chitosan with good biocompatibility is used as a first network, methacrylic anhydride is grafted to obtain the 3D-printable characteristic, acrylic acid is used as a second network, and a dual-network hydrogel skeleton is constructed. The preparation process is simple and convenient, the cost is low, the prepared hydrogel also has certain mechanical strength and strain sensing performance, has a piezoelectric effect, can detect dynamic force, and provides a new thought for customized rapid preparation of stretchable and high-sensitivity piezoelectric hydrogel. 本发明属于水凝胶技术领域，具体涉及一种可3D打印双网络压电水凝胶的制备方法，以PVDF-TrFE为压电材料，并采用生物相容性好的壳聚糖为第一网络，通过接枝甲基丙烯酸酐使其获得可3D打印的特性，以丙烯酸为第二网络，构建双网络水凝胶骨架。本发明制备工艺简便，成本低廉，制得水凝胶还具有一定的机械强度以及应变传感性能，具有压电效应，能够做到检测动态力，为定制化地快速制备可拉伸、高灵敏的压电水凝胶的构建提供了新思路。