以细菌培养生成的细菌纤维素(BC)为基材,碳纳米管(CNTs)为导电填充物,通过简单的物理吸附法制备出了BC/CNTs纳米复合膜。利用扫描电子显微镜(SEM)、傅里叶红外变换光谱仪(FT-IR)、热重分析仪(TG)和四探针测试仪(FPT)对其形貌、结构、热学以及导电性能进行了表征。结果表明:CNTs均匀负载在BC膜上,CNTs的掺入使BC膜的热学性能得到很大改善;同时制备出的柔性纳米复合膜在不同弯曲角度下均具有很好的导电性能,导电率为0.32±0.003S/cm,且性能稳定。这表明合成的纳米复合膜可作为柔性基材在生物传感器、超级电容器及其锂电材料等领域得到很好应用。
BC/CNTs nanocomposite films were prepared by a simple physical adsorption method using biosynthesized bacterial cellulose (BC) as a substrate and carbon nanotubes (CNTs) as conductive fillers.Scanning electron microscope (SEM),fourier transform infrared spectroscopy (FT-IR),thermogravimetric analyzer (TG) and four-probe tester (FPT) were used to characterize their morphology,structure,thermal and electrical properties.The results showed that the CNTs were uniformly supported on the BC film,and the incorporation of CNTs greatly improved the thermal properties of the BC film.Meanwhile,the prepared flexible nanocomposite films had good electrical conductivity at different bending angles.The conductivity was about 0.32±0.003 S/cm,and the performance was stable.This indicated that the film can be wildly used as a flexible substrate in the fields of biosensors,supercapacitors and lithium battery materials.
[1] Wu X,Lu C,Zhou Z,et al.Green synthesis and formation mechanism of cellulose nanocrystal-supported gold nanoparticles with enhanced catalytic performance[J].Environmental Science Nano,2014,1(1):71-79.
[2] Zihare L,Blumberga D.Market opportunities for cellulose products from combined renewable resources[J].Environmental & Climate Technologies,2017,19(1):33-38.
[3] 杨群,代正伟,董军,等.细菌纤维素/聚乙烯醇/胶原蛋白复合膜的制备及表征[J].高分子材料科学与工程,2017,33(11):178-182.
[4] Wang S,Li T,Chen C,et al.Transparent,anisotropic biofilm with aligned bacterial cellulose nanofibers[J].Advanced Functional Materials,2018,28(24):1707491.
[5] Petersen N,Gatenholm P.Bacterial cellulose-based materials and medical devices:current state and perspectives[J].Applied Microbiology & Biotechnology,2011,91(5):1277-1286.
[6] Dahman Y.Nanostructured biomaterials and biocomposites from bacterial cellulose nanofibers[J].J Nanosci Nanotechnol,2009,9(9):5105-5122.
[7] Dugan J M,Gough J E,Eichhorn S J.Bacterial cellulose scaffolds and cellulose nanowhiskers for tissue engineering[J].Nanomedicine,2013,8(2):287-298.
[8] Charpentier P A,Maguire A,Wan W K.Surface modification of polyester to produce a bacterial cellulose-based vascular prosthetic device[J].Applied Surface Science,2006,252(18):6360-6367.
[9] Abral H,Lawrensius V,Handayani D,et al.Preparation of nano-sized particles from bacterial cellulose using ultrasonication and their characterization[J].Carbohydrate Polymers,2018,191:161-167.
[10] Mi Y,Wen L Y,Wang Z J,et al.Ultra-low mass loading of platinum nanoparticles on bacterial cellulose derived carbon nanofibers for efficient hydrogen evolution[J].Catalysis Today,2016,262:141-145.
[11] Zhang F,Tang Y B,Yang Y,et al.In-situ assembly of three-dimensional MoS2 nanoleaves/carbon nanofiber composites derived from bacterial cellulose as flexible and binder-free anodes for enhanced lithium-ion batteries[J].Electrochimica Acta,2016,211:404-410.
[12] Dursun B,Sar T,Ata A,et al.Pyrolyzed bacterial cellulose-supported SnO2 nanocomposites as high-capacity anode materials for sodium-ion batteries[J].Cellulose,2016,23(4):2597-2607.
[13] Pourreza N,Golmohammadi H,Naghdi T,et al.Green in-situ synthesized silver nanoparticles embedded in bacterial cellulose nanopaper as a bionanocomposite plasmonic sensor[J].Biosensors & Bioelectronics,2015,74:353-359.
[14] Marta K,Andrew C S,Michael J G,et al.Molecular interactions in bacterial cellulose composites studied by 1D FT-IR and dynamic 2D FT-IR spectroscopy[J].Carbohydrate Research,2002,337(12):1145-1153.
[15] Zhou T,Chen D,Jiu J,et al.Electrically conductive bacterial cellulose composite membranes produced by the incorporation of graphite nanoplatelets in pristine bacterial cellulose membranes[J].Express Polymer Letters,2013,7(9):756-766.
[16] Zhao B,Hu H,Yu A P,et al.Synthesis and characterization of water soluble single-walled carbon nanotube graft copolymers[J].Journal of the American Chemical Society,2005,127(22):8197-8203.
[17] 吕鹏飞,王清清,李国辉,等.织物表面修饰细菌纤维素对碳纤维织物性能的影响[J].纺织学报,2015,36(7):50-54.
[18] Yoon S H,Jin H J,Kook M C,et al.Electrically conductive bacterial cellulose by incorporation of carbon nanotubes[J].Biomacromolecules,2006,7(4):1280-1284.
[19] Park W I,Kim H S,Kwon S M,et al.Synthesis of bacterial celluloses in multiwalled carbon nanotube-dispersed medium[J].Carbohydrate Polymers,2009,77(3):457-463.
基金资助
国家自然科学基金(51641303);江苏省自然科学基金青年项目(BK20150155)
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