欧国松,施嘉辉,姜敏,孔文龙,马瑞琦,陈建军
OU Guo-song,SHI Jia-hui,JIANG Min,KONG Wen-long,MA Rui-qi,CHEN Jian-jun

• 1:浙江理工大学材料与纺织学院

摘要(Abstract)：

通过硫酸和硝酸混合溶液对碳纳米管进行酸化改性,采用傅里叶红外光谱证实在碳纳米管上成功引入了羧基、羟基亲水基团,提高了其在水中的分散均匀性。将碳纳米管分散液与海藻酸钠水溶液混合形成均匀的海藻酸钠/碳纳米管纺丝原液,采用湿法纺丝的工艺,以针管注射的方式将纺丝原液注入到氯化钙的凝固浴中,制备得到海藻酸钠/碳纳米管复合纤维。采用场发射扫描电镜观察了复合纤维的形貌,并分析了不同碳纳米管负载量的复合纤维力学性能。结果表明:当碳纳米管负载量达到11%时,复合纤维拉伸强度达到最大值410 MPa,有效提高了海藻酸钠纤维的拉伸强度。
The carbon nanotubes were acidified by a mixed solution of sulfuric acid and nitric acid. Fourier transform infrared spectroscopy analysis confirmed that the carboxyl group and hydroxyl hydrophilic group were modified on the carbon nanotubes, which improved the dispersion performance in aqueous solution.The uniformly dispersed carbon nanotube dispersion is mixed with sodium alginate aqueous solution to form a uniform sodium alginate/carbon nanotube spinning dope. The spinning dope was injected into a calcium chloride coagulation bath by wet spinning process to prepare a sodium alginate/carbon nanotube composite fiber, the morphology of the composite fibers was observed by field emission scanning electron microscopy.The mechanical properties of sodium alginate/carbon nanotube composite fibers with different carbon nanotube loading contents were analyzed. The results show that when the loading of carbon nanotubes reaches 11%, the tensile strength of the composite fiber reaches the maximum value of 410 MPa, which effectively increases the tensile strength of sodium alginate fiber.

关键词(KeyWords)： 碳纳米管;酸化改性;海藻酸钠;湿法纺丝;力学性能
carbonnanotube;acidificationmodification;sodiumalginate;wetspinning;mechanicalproperty

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51572243)

作者(Author): 欧国松,施嘉辉,姜敏,孔文龙,马瑞琦,陈建军
OU Guo-song,SHI Jia-hui,JIANG Min,KONG Wen-long,MA Rui-qi,CHEN Jian-jun

DOI: 10.16090/j.cnki.hcxw.20181214.006

参考文献(References)：

• [1] IIJIMA S. Helical microtubules of graphitic carbon[J]. Nature, 1991,354(7):56-58.
• [2] XIE S, LI W, PAN Z, et al. Mechanical and physical properties on carbon nanotube[J]. Journal of Physics and Chemistry of Solids, 2000, 61(7):1153-1158.
• [3] COLEMAN J N, KHAN U, BLAU W J, et al. Small but strong:a review of the mechanical properties of carbon nanotube-polymer composites[J].Carbon, 2006, 44(9):1624-1652.
• [4] KEARNS J C, SHAMBAUGH R L. Polypropylene fibers reinforced with carbon nanotubes[J]. Journal of Applied Polymer Science, 2010, 86(8):2079-2084.
• [5] SREEKUMAR T V, LIU L, KUMAR S, et al. Polyacrylonitrile singlewalled carbon nanotube composite fibers[J]. Advanced Materials, 2004, 16(1):58-61.
• [6] VIGOLO B, PéNICAUD A, COULON C, et al. Macroscopic fibers and ribbons of oriented carbon nanotubes[J]. Science, 2000, 290(5495):1331-1334.
• [7] VIGOLO B,POULIN B,LUCAS M. Improved structure and properties of single-wall carbon nanotube spun fibers[J]. Applied Physics Letters, 2002, 81(7):1210-1212.
• [8] ZHOU C,WANG S, ZHANG Y, et al. In situ preparation and continuous fiber spinning of poly(p-phenylene benzobisoxazole)composites with oligo-hydroxyamide-functionalized multi-walled carbon nanotubes[J]. Polymer,2008, 49(10):2520-2530.
• [9] CHEN W, TAO W,LIU Y. Carbon nanotube-reinforced polyurethane composite fibers composites[J]. Science&Technology, 2006, 66(15):3029-3034.
• [10]陈燕,张慧勤.多壁碳纳米管/聚丙烯复合材料的微观结构及结晶性能研究[J].河南工业大学学报(自然科学版), 2007, 28(4):81-83.
• [11] RAO A M, CHEN J, RICHTER E, et al. Effect of van der waals interactions on the raman modes in single walled carbon nanotubes[J]. Physical Review Letters, 2001, 86(17):3895-3898.
• [12]郭肖青.海藻纤维的制备及结构与性能研究[D].青岛:青岛大学,2007:73-98.
• [13] CHANG T E, JENSEN L R, KISLIUK A, et al. Microscopic mechanism of reinforcement in single-wall carbon nanotube/polypropylene nanocomposite[J]. Polymer, 2005, 46(2):439-444.
• [14] MCINTOSH D, KHABASHESKU V N, BARRERA E V. Benzoyl peroxide initiated in situ functionalization, processing, and mechanical properties of single-walled carbon nanotube-polypropylene composite fibers[J]. Journal of Physical Chemistry C, 2007, 111(4):1592-1600.
• [15] FANG Y, ALASSAF S, PHILLIPS G O, et al. Multiple steps and critical behaviors of the binding of calcium to alginate[J]. Journal of Physical Chemistry B, 2007, 111(10):2456-2462.