采用维生素C化学还原法将氧化石墨烯(GO)还原为还原氧化石墨烯(rGO),并分别通过X射线衍射仪、拉曼光谱仪以及扫描电镜对样品进行表征。将rGO与硅橡胶共混得到多组不同质量比的硅橡胶/rGO复合薄膜,并分别通过温度采集系统以及电子万能材料试验机对样品进行表征。将rGO含量为8%的薄膜植入软体弯曲致动器中作为光热转换层,并在致动器的空腔内注入丙酮液体,制备得到通过丙酮的液-气相变驱动的软体弯曲致动器,观察并通过录像记录致动器在红外光照下的弯曲运动,得到致动器弯曲角随光照时间的变化规律。
Reduced graphene oxide (rGO) was prepared by using vitamin C as a reducing agent,and the samples were characterized by X-ray diffraction,Raman spectroscopy and scanning electron microscopy.Silicone rubber/rGO membranes were prepared by compositing rGO into silicone rubber,and the samples were characterized by temperature acquisition system and electronic universal material testing machine.A pneumatic soft actuator driven by liquid-gas state change was prepared by implanting the silicone rubber/rGO membrane with wtrGO of 8% in the actuator for photothermal conversion and injecting acetone into the chambers of the actuator.The bending motions of the actuator under infrared light was observed,and recorded by using camera and the bending angle over time was obtained.
[1] Ilievski F,Mazzeo A D,Shepherd R F,et al.Soft robotics for chemists[J].Angewandte Chemie International Edition,2011,50:1890-1895.
[2] Gorissen B,Reynaerts D,Konishi S,et al.Elastic inflatable actuators for soft robotic applications[J].Advanced Materials,2017,29(43):1604977-16049990.
[3] Connolly F,Polygerinos P,Walsh C J,et al.Mechanical programming of soft actuators by varying fiber angle[J].Soft Robot,2017,2(1):26-32.
[4] Miriyev A,Stack K,Lipson H.Soft material for soft actuators[J].Nature Communication,2017,8:596-603.
[5] Hawkes E W,Blumenschein L H,Greer J D,et al.A soft robot that navigates its environment through growth[J].Science Robotics,2017,2(8):eaan3028.
[6] Gong X Y,Yang K,Xie J J,et al.Rotary actuators based on pneumatically driven elastomeric structures[J].Advanced Materials,2016,28(34):7533-7538.
[7] Martinez R V,Branch J L,Fish C R,et al.Robotic tentacles with three-dimensional mobility based on flexible elastomers[J].Advanced Materials,2013,25(2):205-212.
[8] Rafsanjani A,Zhang Y R,Liu B Y,et al.Kirigami skins make a simple soft actuator crawl[J].Science Robotics,2018,3(15):eaar7555.
[9] Shepherd R F,Ilievski F,Choi W,et al.Multigait soft robot[J].Proceedings of the National Academy of Sciences of the United States of America,2011,108(51):20400-20403.
[10] Ainla A,Verma M S,Yang D,et al.Soft,rotating pneumatic actuator[J].Soft Robot,2017,4:297-304.
[11] Tolley M T,Shepherd R F,Mosadegh B,et al.A resilient,untethered soft robot[J].Soft Robot,2014,1:213-223.
[12] Yang D,Mosadegh B,Ainla A,et al.Buckling of elastomeric beams enables actuation of soft machines[J].Advanced Materials,2015,41(27):6323-6327.
[13] Xie G,Zhang K,Guo B,et al.Graphene-based materials for hydrogen generation from light-driven water splitting[J].Advanced Materials,2013,25(28):3820-3839.
[14] Deng T,Yoon C K,Jin Q R,et al.Self-folding graphene-polymer bilayers[J].Applied Physics Letters,2015,106(20):203108-203111.
[15] Tang Z H,Gao Z W,Jia S H,et al.Graphene-based polymer bilayers with superior light-driven properties for remote construction of 3D structures[J].Advanced Science,2017,4(5):1600437-1600446.
[16] Allen M J,Tung V C,Kaner R B.Honeycomb carbon:a review of graphene[J].Chemical Reviews,2009,110(1):132-145.
[17] Stankovich S,Dikin D A,Dommett G H B,et al.Graphene-based composite materials[J].Nature,2006,442(7100):282-286.
[18] Robinson J T,Tabakman S M,Liang Y,et al.Ultrasmall reduced graphene oxide with high near-infrared absorbance for photothermal therapy[J].Journal of the American Chemical Society,2011,133(17):6825-6831.
[19] 王磊,邹华,孙全吉,等.高填充石墨烯纳米片/硅橡胶复合材料的结构与性能[J].有机硅材料,2018,32(6):10-15.
[20] Song Y,Yu J,Yu L,et al.Enhancing the thermal,electrical,and mechanical properties of silicone rubber by addition of graphene nanoplatelets[J].Materials & Design,2015,88:950-957.
PDF
