通过超声吸附法将石墨烯(Gr)均匀地附着于静电纺丝聚四氟乙烯/聚丙烯腈(PVDF/PAN)纳米纤维膜表面,并通过改变超声吸附时间制备得到不同电导率的Gr@PVDF/PAN复合纳米纤维膜。随后对上述复合纳米纤维膜的微观形貌、结晶结构、力学性能、热性能、电导率和压电性能分别进行表征。结果表明:随着超声吸附时间的延长,Gr@PVDF/PAN复合纳米纤维膜表面附着的石墨烯量逐渐增大。Gr@PVDF/PAN复合纳米纤维膜的拉伸强度随着吸附时间延长逐渐降低,而断裂伸长率在较短吸附时间时变化不大;Gr@PVDF/PAN复合纳米纤维膜的热稳定性与电导率均随着吸附时间的延长而增大;Gr@PVDF/PAN复合纳米纤维膜也具有一定的压电输出性能。
In this paper,graphene (Gr) was uniformly attached to the surface of electrospun PVDF/PAN nanofiber membranes by ultrasonic adsorption method.The Gr@PVDF/PAN nanofiber membranes with different electrical conductivity were prepared via changing the ultrasonic adsorption time.Subsequently,the microstructure,crystalline structure,mechanical properties,thermal properties,electrical conductivity and piezoelectric properties of the composite nanofiber membranes were characterized.The results showed that the amount of graphene attached onto the Gr@PVDF/PAN composite nanofiber membrane surface gradually increased with extended ultrasonic adsorption time.The tensile strength of Gr@PVDF/PAN composite nanofiber membranes decreased with the increase of adsorption time,but the elongation at break remained relatively stable within shorter adsorption time.The thermal stability and electrical conductivity of Gr@PVDF/PAN composite nanofiber membranes increased with the extension of adsorption time.Gr@PVDF/PAN composite nanofiber membranes also exhibited certain piezoelectric output properties.
[1] Novoselov K S,Geim A K,Morozov S V,et al.Electric field effect in atomically thin carbon films[J].Science,2004,306:666-669.
[2] Novoselov K S,Geim A K,Morozov S V,et al.Two-dimensional gas of massless Dirac fermions in grapheme[J].Nature,2005,438:197-200.
[3] 刘霞.石墨烯及其复合材料的制备与性能研究[D].上海:东华大学,2016.
[4] 赵洪力,蔡文豪,王丽,等.石墨烯在表面活性剂水溶液中的分散稳定性研究[J].燕山大学学报,2018,42:377-385.
[5] Zhang H.Ultrathin two-dimensional nanomaterials[J].ACS Nano,2015,9:9451-9469.
[6] Yang W F,Lin S M,Gong W,et al.Single body-coupled fiber enables chipless textile electronics[J].Science,2024,384:74-81.
[7] Wang S H,Xu J,Wang W C,et al.Skin electronics from scalable fabrication of an intrinsically stretchable transistor array[J].Nature,2018,555:25494.
[8] Ye C,Yang S,Ren J,et al.Electroassisted core-spun triboelectric nanogenerator fabrics for IntelliSense and artificial intelligence perception[J].ACS Nano,2022,16:4415-4425.
[9] 刘忠柱,张梦霞,罗海玉,等.聚丙烯腈及其复合纳米纤维膜制备与性能研究[J].化工新型材料,2021,49(12):84-88.
[10] Liu Z Z,Li G J,Qin Q,et al.Electrospun PVDF/PAN membrane for pressure sensor and sodium-ion battery separator[J].Advanced Composites and Hybrid Materials,2021,4:1215-1225.
[11] Yang J,Zhang Y H,Li Y N,et al.Piezoelectric nanogenerators based on graphene oxide/PVDF electrospun nanofiber with enhanced performances by in-situ reduction[J].Materials Today Communications,2021,26:101629.
[12] Xu L,Liu C Y,Keram R,et al.Design,preparation and application of high-performance PVDF-based piezoelectric nanogenerators[J].Applied Materials Today,2024,41:102509.
[13] Liu Z Z,Li S S,Zhu J Z,et al.Fabrication of β-phase-enriched PVDF sheets for self-powered piezoelectric sensing[J].ACS Applied Materials & Interfaces,2022,14:11854-11863.
[14] Zhou Y Q,Lin T,Wang X G,Electrospun nanofibre yarns[C].Shanghai:Proceedings of the Fiber Society,2009 Spring Conference,2009.
[15] Kar T,Díaz I M,Casales-Díaz M,et al.Carbonized zeolitic imidazolate framework-incorporated electrospun polymeric nanofiber composite for supercapacitor applications[J].Materials Letters,2025,379:137698.
[16] Shao Z G,Wang Q B,Gui Z Q,et al.Electrospun bimodal nanofibrous membranes for high-performance,multifunctional,and light-weight air filtration:a review[J].Separation and Purification Technology,2025,358:130417.
[17] Shao W L,Zhu S L,Zhu L,et al.Stable manufacturing of electrospun PVDF/FPU multiscale nanofiber membranes and application of high efficiency protective mask filter elements[J].Separation and Purification Technology,2025,359:130511.
[18] Liu Y,Choi Y H,Han G C,et a1.Temperature dependent tensile behavior of gel-spun polyacrylonitrile and polyacrylonitrile/carbon nanotube composite fibers[J].Polymer,2013,54:4003-4009.
[19] Ghafari E,Jiang X,Lu N.Surface morphology and β-phase formation of single polyvinylidene fluoride (PVDF) composite nanofibers[J].Advanced Composites and Hybrid Materials,2018,1:332-340.
[20] Wang W,Zheng Y,Jin X,et al.Unexpectedly high piezoelectricity of electrospun polyacrylonitrile nanofiber membranes[J].Nano Energy,2019,56:588-594.
基金资助
国家自然科学基金(52403061);河南省科技攻关项目(232102230141);河南省自然科学基金项目(242300420371);河南省高校科技创新团队项目(23IRTSTHN019)
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