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Study on intelligent deformation characteristics of temperature-driven hydrogel actuators prepared via molding and3Dprinting

机译：通过模制和3dprinting制备温度驱动水凝胶致动器智能变形特性的研究

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摘要

The poly-N-isopropylacrylamide intelligent hydrogel actuators with high mechanical strength and efficient temperature responses were successfully prepared via molding and three-dimensional (3D) printing. Addition of nanofibrillated cellulose (NFC) effectively improved the crosslinking density and viscosity of hydrogels, enhancing the mechanical strength and 3D printable property. Based on sufficient polymerization on interface, bilayer hydrogel actuator prepared via molding exhibited efficient bending/unbending deformations. Bending degree in poikilothermy temperature ranging from 25 degrees C to 55 degrees C was higher than that in constant temperature of 55 degrees C. Inspired by the rheology regulation of NFC, 3D printing intelligent hydrogel actuators with NFC content of 10 mg/mL were polymerized efficiently by ultraviolet irradiation. Self-driven deformation characteristics of 3D printed intelligent hydrogels actuators were regulated via printing parameters including angle, width and length ratio and filling rate of the layered network structure model. The prepared hydrogel material system with molding and 3D printing ability provided material candidates for design and preparation of intelligent soft actuator and robot.
机译：通过模塑和三维（3D）印刷成功制备具有高机械强度和高效温度响应的聚对异丙基丙烯酰胺智能水凝胶致动器。添加纳米纤化纤维素（NFC）有效提高了水凝胶的交联密度和粘度，增强了机械强度和3D可打印性能。基于界面上足够的聚合，通过模塑制备的双层水凝胶致动器表现出有效的弯曲/不弯曲变形。 Poikilothotmy温度弯曲程度从25℃〜55℃的温度高于恒定温度为55℃的恒定温度。通过NFC的流变调节启发，具有NFC含量为10mg / mL的3D印刷智能水凝胶致动器有效地聚合通过紫外线辐射。通过印刷参数调节3D印刷智能水凝胶致动器的自驱动变形特性，包括分层网络结构模型的角度，宽度和长度和填充率。制备的水凝胶材料系统具有模塑和3D印刷能力为智能软执行器和机器人的设计和制备提供了材料候选者。

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