Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions
Polyacrylonitrile (PAN) gels create significant obstacles in industrial fiber spinning by forming insoluble networks that compromise solution stability and uniformity. This study investigates the rheological properties of PAN/dimethyl sulfoxide (DMSO) solutions, examining how aging time, moisture co...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/10/11/728 |
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| author | Jae-Yeon Yang Yun-Su Kuk Byoung-Suhk Kim Min-Kang Seo |
| author_facet | Jae-Yeon Yang Yun-Su Kuk Byoung-Suhk Kim Min-Kang Seo |
| author_sort | Jae-Yeon Yang |
| collection | DOAJ |
| description | Polyacrylonitrile (PAN) gels create significant obstacles in industrial fiber spinning by forming insoluble networks that compromise solution stability and uniformity. This study investigates the rheological properties of PAN/dimethyl sulfoxide (DMSO) solutions, examining how aging time, moisture content, and polymer concentration affect gelation behavior. Dynamic rheological analysis revealed that both physical and chemical crosslinks play crucial roles in gel formation, with gelation accelerating markedly when moisture content exceeds 3% and aging progresses. Under heat treatment at 80 °C, samples with increased moisture content demonstrated rapid transitions to solid-like states, indicating a critical moisture threshold for enhanced gelation kinetics. Additionally, reductions in polymer concentration disrupted physical crosslink density, thereby mitigating gel formation. These results underscore the importance of precisely controlling moisture and concentration parameters in PAN solutions to stabilize solution properties and minimize gel formation, thus enhancing process efficiency and quality in PAN-based carbon fiber production. |
| format | Article |
| id | doaj-art-ab33282d6e2e49f7ae10d2f86dff8406 |
| institution | Kabale University |
| issn | 2310-2861 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj-art-ab33282d6e2e49f7ae10d2f86dff84062024-11-26T18:05:31ZengMDPI AGGels2310-28612024-11-01101172810.3390/gels10110728Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide SolutionsJae-Yeon Yang0Yun-Su Kuk1Byoung-Suhk Kim2Min-Kang Seo3Convergence Research Division, Korea Carbon Industry Promotion Agency (KCARBON), 110-11 Banryong-ro, Deokjin-gu, Jeonju-si 54853, Jeonbuk-do, Republic of KoreaConvergence Research Division, Korea Carbon Industry Promotion Agency (KCARBON), 110-11 Banryong-ro, Deokjin-gu, Jeonju-si 54853, Jeonbuk-do, Republic of KoreaDepartment of Organic Materials & Textile Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeonbuk-do, Republic of KoreaKorea Institute of Convergence Textile (KICTEX), 594 Seodong-ro, Iksan-si 54588, Jeonbuk-do, Republic of KoreaPolyacrylonitrile (PAN) gels create significant obstacles in industrial fiber spinning by forming insoluble networks that compromise solution stability and uniformity. This study investigates the rheological properties of PAN/dimethyl sulfoxide (DMSO) solutions, examining how aging time, moisture content, and polymer concentration affect gelation behavior. Dynamic rheological analysis revealed that both physical and chemical crosslinks play crucial roles in gel formation, with gelation accelerating markedly when moisture content exceeds 3% and aging progresses. Under heat treatment at 80 °C, samples with increased moisture content demonstrated rapid transitions to solid-like states, indicating a critical moisture threshold for enhanced gelation kinetics. Additionally, reductions in polymer concentration disrupted physical crosslink density, thereby mitigating gel formation. These results underscore the importance of precisely controlling moisture and concentration parameters in PAN solutions to stabilize solution properties and minimize gel formation, thus enhancing process efficiency and quality in PAN-based carbon fiber production.https://www.mdpi.com/2310-2861/10/11/728polyacrylonitrilegelationrheological propertiesmoisture contentcarbon fibers |
| spellingShingle | Jae-Yeon Yang Yun-Su Kuk Byoung-Suhk Kim Min-Kang Seo Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions Gels polyacrylonitrile gelation rheological properties moisture content carbon fibers |
| title | Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions |
| title_full | Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions |
| title_fullStr | Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions |
| title_full_unstemmed | Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions |
| title_short | Effects of Moisture Content and Heat Treatment on the Viscoelasticity and Gelation of Polyacrylonitrile/Dimethylsulfoxide Solutions |
| title_sort | effects of moisture content and heat treatment on the viscoelasticity and gelation of polyacrylonitrile dimethylsulfoxide solutions |
| topic | polyacrylonitrile gelation rheological properties moisture content carbon fibers |
| url | https://www.mdpi.com/2310-2861/10/11/728 |
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