Abstract
We have found a very easy, low-cost, highly-efficient technique for recycling copper (Cu) materials from polymer-coated waste Cu wire (WCW) by applying voltages using an induction-heating furnace. Voltages ranging from 562–969 V were applied to find the optimum conditions for removing the polymer coating from WCW to obtain pure Cu material. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, X-ray diffraction, and optical imaging were used to determine the required removal temperature of the polymer and its removal mechanism. FTIR analysis confirmed that the polymer coating on the WCW was polyester. Moreover, we successfully removed the polyester coating from the WCW by applying a voltage of 969 V.
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Veasey, V. J., Wilson, R. J., and Squires, D. M., “The Physical Separation and Recovery of Metals from Wastes,” Gordon and Breach Science Publishers, pp. 1–19, 1993.
Cui, J. and Forssberg, E., “Mechanical Recycling of WEEE,” J. Hazard. Mater., Vol. 99, No. 3, pp. 243–263, 2003.
Kang, Y., Chun, D. M., June, Y., and Ahn, S. H., “Computer-aided environmental design system for the energy-using product (EuP) directive,” Int. J. Precis. Eng. Manuf., Vol. 11, No. 3, pp. 397–406, 2010.
Lee, E. S., Won, J. K., Shin, T. H., and Kim, S. H., “Investigation of machining characteristics for electrochemical micro-deburring of the AZ31 lightweight magnesium alloy,” Int. J. Precis. Eng. Manuf., Vol. 13, No. 3, pp. 339–345, 2012.
Madorsky, S. L., “Thermal Degradation of Organic Polymers,” Wiley Interscience, 1964.
Groten, B., “Application of Pyrolysis-Gas Chromatography to Polymer Characterization,” Anal. Chem., Vol. 36, No. 7, pp. 1206–1212, 1964.
Leibnitz, E. and Struppe, H. G., “Handbuch der Gas — Chmatographie,” Verlag Chemie, 1967.
Kirov, K. R. and Assender, H. E., “Quantitative ATR-IR Analysis of Anisotropic Polymer Films: Surface Structure of Commercial PET,” Macromolecules, Vol. 38, No. 22, pp. 9258–9265, 2005.
Szczepanowska, H. and Wilson, W., “Permanency of Reprographic Images on Polyester Film,” JAIC, Vol. 39, No. 3, pp. 371–390, 2000.
Kamps, S. R., Scnumm, S., and Kleinermanns, K. F., “GC/FT IR/MS Spectroscopy of Native Polychlorinated Dibenzo-pdioxins and Dibenzofurans Extracted from Municipal Fly Ash,” Anal. Chem., Vol. 69, No. 6, pp. 1113–1118, 1997.
Cristobal, J. L. V. and Gillberot, A. P. M., “Unsaturated Polyester 4. Polyester from Malic Anhydride and 1, 5 Pentanediol,” Polymer Bulletin, Vol. 26, No. 3, pp. 313–317, 1991.
Clemens, R. J. and Witzeman, J. S., “Kinetic and Spectroscopic Studies on the Thermal Decomposition of 2,2,6-Trimethyl-4H-1,3-dioxin-4-0ne: Generation of Acetylketene,” J. Am. Chem. Soc., Vol. 111, No. 6, pp. 2186–2193, 1989.
Chatzi, E. G., Ishida, H., and Koenig, J. L., “An FT-IR Study of the Water Absorbed in Kevlar-49® Fibers,” Appl. Spectrosc., Vol. 40, No. 6, pp. 847–851, 1986.
Infrared Spectroscopy, http://www.umsl.edu/~orglab/documents/IR/IR2.html
Spectroscopy, http://orgchem.colorado.edu/hndbksupport/irtutor/aromaticsir.html
Khannaa, P. K., Kale, T. S., Shaikh, M., Rao, N. K., and Satyanarayana, C. V. V., “Synthesis of Oleic Acid Capped Copper Nano-particles via Reduction of Copper Salt by SFS,” Mater. Chem. Phys., Vol. 110, No. 1, pp. 21–25, 2008.
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Mominul Haque, M., Kim, H., Kong, MS. et al. Recycling copper from waste copper wire using an applied voltage. Int. J. Precis. Eng. Manuf. 13, 1251–1254 (2012). https://doi.org/10.1007/s12541-012-0167-3
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DOI: https://doi.org/10.1007/s12541-012-0167-3