PMID- 33287248 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201226 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 12 IP - 12 DP - 2020 Dec 3 TI - Fabrication of Activated Carbon Fibers with Sheath-Core, Hollow, or Porous Structures via Conjugated Melt Spinning of Polyethylene Precursor. LID - 10.3390/polym12122895 [doi] LID - 2895 AB - Using polyethylene as carbon precursor, we have fabricated cost-effective carbon fibers with a sheath-core structure via conjugate melt spinning. Low-density polyethylene (LDPE) and high-density polyethylene (HDPE) were used as the sheath and core of the fiber, respectively, while sulfonation with sulfuric acid was conducted to enable the crosslinking of polyethylene. We demonstrated that carbonization and activation of the sheath-core-structured polyethylene fiber can result in a well-developed microporous structure in the sheath layer, and due to the core-sheath structure, the resulting activated carbon fibers exhibit a high tensile strength of ~455 MPa, initial modulus of ~14.4 GPa, and Brunauer-Emmett-Teller (BET) surface area of ~1224 m(2)/g. Finally, activated carbon fibers with a hollow, sheath-core, and porous were successfully fabricated by controlling the degree of crosslinking of the LDPE/HDPE sheath-core fiber. FAU - Won, Jong Sung AU - Won JS AD - Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA. FAU - Lee, Ha Ram AU - Lee HR AD - Department of Advanced Organic Materials & Textile Engineering, Chungnam National University, Daejeon 34134, Korea. FAU - Lee, Min Jun AU - Lee MJ AD - Department of Advanced Organic Materials & Textile Engineering, Chungnam National University, Daejeon 34134, Korea. FAU - Jeon, Min Hong AU - Jeon MH AD - Department of Advanced Organic Materials & Textile Engineering, Chungnam National University, Daejeon 34134, Korea. FAU - Lee, Seung Goo AU - Lee SG AD - Department of Advanced Organic Materials & Textile Engineering, Chungnam National University, Daejeon 34134, Korea. FAU - Joo, Yong Lak AU - Joo YL AUID- ORCID: 0000-0002-4646-1625 AD - Robert Frederick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA. LA - eng GR - 2018086216/National Research Foundation of Korea/ PT - Journal Article DEP - 20201203 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC7761741 OTO - NOTNLM OT - activated carbon fiber OT - hollow carbon fiber OT - polyethylene precursor OT - sheath-core activated carbon fiber COIS- The authors declare no conflict of interest. EDAT- 2020/12/09 06:00 MHDA- 2020/12/09 06:01 PMCR- 2020/12/03 CRDT- 2020/12/08 01:07 PHST- 2020/11/18 00:00 [received] PHST- 2020/11/30 00:00 [revised] PHST- 2020/11/30 00:00 [accepted] PHST- 2020/12/08 01:07 [entrez] PHST- 2020/12/09 06:00 [pubmed] PHST- 2020/12/09 06:01 [medline] PHST- 2020/12/03 00:00 [pmc-release] AID - polym12122895 [pii] AID - polymers-12-02895 [pii] AID - 10.3390/polym12122895 [doi] PST - epublish SO - Polymers (Basel). 2020 Dec 3;12(12):2895. doi: 10.3390/polym12122895.