凝胶纺壳聚糖分散碳纳米管/聚丙烯腈纤维的研究  

Studies on Gel-spinning of Chitosan Dispersion Carbon Nano-tubes/polyacrylonitrile Composite Fibers

作　　者：曾海涛[1,2] 董炎明[1,2,3] 周花[2] 曾志群[1,2] 沈新元[4] 

机构地区：[1]厦门大学化学化工学院 [2]厦门大学材料学院 [3]厦门大学特种先进材料实验室,福建厦门361005 [4]东华大学材料科学与工程学院,上海301620

出　　处：《厦门大学学报（自然科学版）》2009年第4期564-569,共6页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金(50673082);国家自然科学基金重点项目(50333050);高等学校学科创新引智计划资助(111-2-04);973计划课题(2006CB605305);上海市基础研究重大项目(07DJ14002)资助

摘　　要：多壁碳纳米管(MWNTs)通过壳聚糖衍生物处理后与超高分子量聚丙烯腈进行复合,将得到的复合材料通过凝胶纺丝法制备出不同复合比例的MWNTs/聚丙烯腈纤维.将不同纺丝方法以及不同比例MWNTs对拉伸强度、模量、取向度、结晶结构的影响进行比较研究,同时通过电镜观察MWNTs的分散状况.结果表明:相比于湿法纺丝,通过凝胶纺丝法制备的复合纤维,MWNTs取向更好,分散更为均匀,纤维拉伸强度、模量都得到显著提高.对比未加MWNTs的对照样,在这个体系中加入质量分数为0.5%的MWNTs复合时,拉伸强度提高37%,弹性模量提高11.68%,并且声速取向度维持在相当高的水平(92.5%).After being treated by chitosan derivatives,the multi-walled carbon nano-tubes （MWNTs） were composited with ultimate high molecular weight polyacrylonitrile （UHMW-PAN）. And then spin a series concentration of MWNTs proportion of MWNTs/ PAN composite fibres via gebspinning. Study on the effect of different methods of spinning, and the different proportion of multiwalled carbon nano-tubes on the tensile strength, modulus, orientation, crystallization structure. And the dispersion of MWNTs in PAN was observed by scan electron microscope. The result shows that ; compared to wet-spinning fibers,the gel-spinning fibers have better orientation,dispersion, tensile strength and modulus. And the composited with carbon nano-tubes would engender the impact of sonic orientation of the fibers. While the mass fraction of MWNTs is 0. 5% ,compare to the PAN fibers,the tensile strength increase 37 %, Young＇s modulus increase 11.68 %,and the degree of sonic orientation is highly maintained （92.5 %）.

关 键 词：凝胶纺丝 超高分子量聚丙烯腈 碳纳米管 复合纤维 壳聚糖衍生物 

分 类 号：TQ342.3[化学工程—化纤工业]