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Spinning Methods for Carbon Nanotube Fibers

Wang, Anli
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396453563

Abstract Details

2014, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
Carbon nanotubes (CNTs) have excellent properties along the tube axis. Although the material has fantastic properties at nano scale, it has proven difficult to assemble CNTs into macro-scale products that retain these properties. This thesis investigates different methods for spinning short CNTs into continuous fibers. The first part of the thesis concentrates on the study of dry spinning techniques. CNT fibers can be produced from spinnable arrays. It is found that CNT length plays an important role in the strength of CNT fibers. However, long CNT arrays are usually not spinnable. Alternative ways to spin long CNTs into fibers were exploited. One way is to assemble these long CNTs with the aid of liquid. The obtained fiber has high electrical conductivity by using annealed CNTs but low strength. Another way explored is to make a long CNT array spinnable by binding the ends of CNT bundles in the array. Besides dry spinning, wet spinning methods were also applied to spin CNT fibers. One way of wet spinning to produce CNT fibers is through coagulation of CNT dispersions in a polymer bath. Parameters involved in the spinning process and post treatments were studied. A possible mechanism of the coagulation was given. Process of another method is to add CNTs in a polymer solution and wet spin the polymer. Polyvinyl alcohol (PVA) is used as the matrix polymer and several baths were investigated. Addition of CNTs in PVA solution improves strength of the fiber when CNT are well dispersed. Properties of these fibers were dominated by the polymer.
Yijun Liu, Ph.D. (Committee Chair)
Mark Schulz, Ph.D. (Committee Member)
Kumar Vemaganti, Ph.D. (Committee Member)
113 p.
Engineering
Carbon Nanotube; Spinning; Fiber; Yarn

Recommended Citations

Citations

  • Wang, A. (2014). Spinning Methods for Carbon Nanotube Fibers [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396453563

    APA Style (7th edition)

  • Wang, Anli. Spinning Methods for Carbon Nanotube Fibers. 2014. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396453563.

    MLA Style (8th edition)

  • Wang, Anli. "Spinning Methods for Carbon Nanotube Fibers." Master's thesis, University of Cincinnati, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396453563

    Chicago Manual of Style (17th edition)

ucin1396453563
3,116
© 2014, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.