Waste polyvinylchloride derived pitch as a precursor to develop carbon fibers and activated carbon fibers

W. M. Qiao, Seong-Ho Yoon, I. Mochida, J. H. Yang

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Polyvinylchloride (PVC) was successfully recycled through the solvent extraction from waste pipe with an extraction yield of ca. 86%. The extracted PVC was pyrolyzed by a two-stage process (260 and 410 °C) to obtain free-chlorine PVC based pitch through an effective removal of chlorine from PVC during the heat-treatment. As-prepared pitch (softening point: 220 °C) was spun, stabilized, carbonized into carbon fibers (CFs), and further activated into activated carbon fibers (ACFs) in a flow of CO2. As-prepared CFs show comparable mechanical properties to commercial CFs, whose maximum tensile strength and modulus are 862 MPa and 62 GPa, respectively. The resultant ACFs exhibit a high surface area of 1200 m2/g, narrow pore size distribution and a low oxygen content of 3%. The study provides an effective insight to recycle PVC from waste PVC and develop a carbon precursor for high performance carbon materials such as CFs and ACFs.

Original languageEnglish
Pages (from-to)1884-1890
Number of pages7
JournalWaste Management
Volume27
Issue number12
DOIs
Publication statusPublished - Sep 27 2007

All Science Journal Classification (ASJC) codes

  • Waste Management and Disposal

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