{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T05:03:13Z","timestamp":1787029393141,"version":"build-2736575974"},"reference-count":39,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T00:00:00Z","timestamp":1736380800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Natural Science Foundation of China","award":["32060322"],"award-info":[{"award-number":["32060322"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>In this paper, alumina-modified wood liquefaction (AL-WP) was prepared by blending nano-alumina (Al2O3) into wood liquefaction phenolic resin (WP) using a co-blending method. Alumina-modified wood liquefaction protofilament fiber (AL-WPF) was obtained by melt-spinning, curing, and thermo-curing processes, which were followed by carbonization to obtain alumina-modified wood liquefaction carbon fiber (AL-WCF). This paper focuses on the enhancement effect of nano-alumina doping on the mechanical properties and heat resistance of wood liquefaction carbon fiber (WCF), explores the evolution of graphite microcrystalline structure during the high-temperature carbonization process, and optimizes the curing conditions of AL-WPF. The results showed that the introduction of Al2O3 significantly improved the mechanical properties and heat resistance of carbon fibers. When 1.5% Al2O3 was doped and carbonized at 1000 \u00b0C, the tensile strength of AL-WCF was increased from 33.78 MPa to 95.74 MPa, there was an enhancement of 183%, its residual carbon rate could reach 79.2%, which was better than that of the undoped wood liquefaction (WCF), and it exhibited a more substantial heat-resistant property. In addition, the best curing process for alumina nanoparticle wood liquefiers was obtained by optimizing the curing conditions: hydrochloric acid concentration of 16%, formaldehyde concentration of 18.5%, temperature increase rate of 15 \u00b0C\/min, holding time of 3 h, and holding temperature of 100 \u00b0C. These studies provide a theoretical basis and technical support for developing and applying carbon fibers from alumina-modified wood liquefiers.<\/jats:p>","DOI":"10.3390\/polym17020155","type":"journal-article","created":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T09:54:27Z","timestamp":1736416467000},"page":"155","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Fabrication and Performance Enhancement of Wood Liquefaction-Based Carbon Fibers Modified with Alumina Nanoparticles"],"prefix":"10.3390","volume":"17","author":[{"given":"Linshuang","family":"Gan","sequence":"first","affiliation":[{"name":"College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China"},{"name":"State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yijing","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China"},{"name":"State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zaibirinisa","family":"Yimin","sequence":"additional","affiliation":[{"name":"College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China"},{"name":"State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianglong","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China"},{"name":"State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jialin","family":"Lv","sequence":"additional","affiliation":[{"name":"College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China"},{"name":"State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8039-9581","authenticated-orcid":false,"given":"Zhigao","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China"},{"name":"State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"108053","DOI":"10.1016\/j.compositesb.2020.108053","article-title":"Current status of carbon fibre and carbon fibre composites recycling","volume":"193","author":"Zhang","year":"2020","journal-title":"Compos. 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