Article
Polymer Science
Mingxuan Lu, Pedro J. Arias-Monje, Jyotsna Ramachandran, Prabhakar Gulgunje, Jeffrey Luo, Mohammad Hamza Kirmani, Carson Meredith, Satish Kumar
Summary: The use of carbon nanotubes (CNT) can accelerate reaction rates and reduce PAN stabilization time, improving the efficiency of carbon fiber production. The addition of CNTs reduces the activation energy of PAN cyclization but increases it for the oxidation reaction.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Chemistry, Physical
Jung-Eun Lee, Yang Ki Chae, Dong Je Lee, Jiho Choi, Han Gi Chae, Tae Hwan Kim, Sungho Lee
Summary: The continuous stabilization of polyacrylonitrile (PAN) fibers in the temperature range of 180-270 C was studied to investigate the microstructural evolutions at various stages. The study revealed that chemical reactions during stabilization induce elongational stress and result in the formation of microvoids. In addition, different types of microvoids were observed, suggesting their origins during the spinning process and stabilization. This study provides significant information for the industrial manufacturing of high-performance carbon fibers.
Article
Chemistry, Multidisciplinary
Zongyu Wang, Huimin Luo, Halie J. Martin, Tao Wang, Yifan Sun, Mark A. Arnould, Bishnu P. Thapaliya, Sheng Dai
Summary: The fabrication of polyacrylonitrile (PAN)-based composite fibers plays a crucial role in high-performance carbon fiber manufacturing. Ionic liquids (ILs) have been explored for their plasticizing properties, and their impact on the elasticity and stretchability of PAN/ILs fibers can be controlled by tuning the anion structure of ILs.
Article
Materials Science, Characterization & Testing
Bruna Mota Terra, Delvonei Alves de Andrade, Roberto Navarro de Mesquita
Summary: In recent years, the application range of composite materials has expanded, with polymeric composite materials having the characteristics of lightweight and mechanical stability. Thermal stabilization of carbon fibers, using polyacrylonitrile as a precursor, is a critical stage in production, affecting material quality. A thermal stabilization model was developed using intelligent algorithms to optimize the production process.
Article
Chemistry, Physical
Bin Wang, Chenggao Li, Weiyu Cao
Summary: It was found that the orientation structure of PAN precursor fiber significantly affected the thermal stabilization process and tensile properties. Fibers with higher orientation degrees showed increased crystallinity, crystallite size, and formation of more aromatic rings, resulting in improved yield strength and initial modulus. Additionally, fibers with higher orientation degrees exhibited a greater increase in yield strength and tensile modulus after heat treatment at 200 degrees C.
Article
Chemistry, Physical
Julia Hofele, Guido Link, John Jelonnek
Summary: Microwave-based dielectric heating is an energy- and time-efficient method that should be considered during the production of carbon fibers. However, there is limited data on the dielectric properties of the processed material. This study presents in-situ measurements of dielectric properties during the stabilization stage of PAN fiber and establishes reaction kinetics and heat transfer models for monitoring and controlling the fiber temperature online.
Article
Engineering, Chemical
Shaobo Yang, Qiufei Chen, Jie Liu, Peng Miao, Chunhua Wang, Peng Guo, Xiaoxu Wang
Summary: Large-tow carbon fibers have high production capacity and processing efficiency, but the heat accumulation within the bundle during the stabilization reaction affects process control and reduces product performance stability. The configuration of the filament bundle, such as tow size and tow spreading width, strongly influences the thermal behavior and structural transformation of the fibers during stabilization. The center temperature of large-tow bundles rises slowly due to poor heat conductivity, leading to significant structural heterogeneities within the bundle. A processing model is proposed for product quality assurance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Materials Science, Textiles
Andrea L. Wilde, David L. J. Alexander, Anthony P. Pierlot, Ronald Denning, Menghe Miao
Summary: The research developed a simple empirical model to predict the density of carbon fibers and analyzed the relative cyclization index and density. After experimental verification, the model showed good agreement with the predictions.
FIBERS AND POLYMERS
(2021)
Article
Polymer Science
P. Porkodi, J. K. Abhilash, Hemant Kumar Shukla
Summary: In this study, PAN/lignin blend fiber was prepared by continuous wet spinning and thermally stabilized at different temperatures. The thermal behavior, structural changes, and mechanical properties of the stabilized fiber were investigated. The results showed that the stabilization temperature had a significant impact on the density, elemental composition, and mechanical properties of the fiber.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Chemistry, Physical
Xiaoyang Ji, Satoshi Matsuo, Nancy R. Sottos, David G. Cahill
Summary: Understanding the anisotropy of thermal and electrical properties of carbon fibers is crucial for various applications. In this study, time-domain thermoreflectance (TDTR) mapping was used to determine the spatial variations in transverse thermal conductivity for two different PAN-based carbon fibers, IM7 and AS4 fibers. The results showed that the transverse thermal conductivity of IM7 fibers was approximately uniform, while the core of A54 fibers had a higher transverse thermal conductivity than the shell.
Article
Polymer Science
Qiufei Chen, Bin He, Yatian Chen, Hongqiang Zhu, Hamza Malik, Yuhang Wang, Jian He, Bomou Ma, Xueli Wang, Hui Zhang, Yong Liu
Summary: In this study, different ratios of P(AN-co-AMPS) and P(AN-co-MA-co-AMPS) were prepared by solution polymerization, and their compositional structure, thermal, and crystallization properties were characterized. It was found that an increase in the AMPS feeding ratio improved the thermal stability and crystallization ability of the PAN copolymer, but also reduced the molecular weight and increased the cyclization exothermic peak temperature. P(AN-co-MA-co-AMPS) avoided these issues and maintained high thermal stability and crystallization properties when appropriate amounts of MA and AMPS were introduced.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Composites
Nishant Chandel, Mahesh Kapurderiya, Akash Kanse, Rani Rohini, T. V. Sreekumar
Summary: This study investigates the use of hybrid nano-fillers to enhance the mechanical, electrical, and thermal properties of PAN nanocomposite films. It is found that the combination of graphene oxide (GO) and single-wall carbon nanotubes (SWCNT) shows a remarkable increase in tensile strength compared to individual nano-fillers. The combination prevents agglomeration of SWCNT and improves interaction with PAN, forming a complete network. The combination also enhances the thermal stability of PAN during heating, leading to increased residual weight and overall efficiency in reinforcement.
POLYMER COMPOSITES
(2023)
Review
Polymer Science
Hyunchul Ahn, Sang Young Yeo, Byoung-Sun Lee
Summary: Researchers have made efforts to enhance the mechanical performance of carbon fibers, with designing strong precursor fibers being identified as one of the most effective strategies.
Article
Chemistry, Physical
E. Ashley Morris, Ruben Sarabia-Riquelme, Nik Hochstrasser, Jordan Burgess, Anne E. Oberlink, David L. Eaton, Matthew C. Weisenberger
Summary: The study reports on the early development of polyacrylonitrile-derived structural hollow carbon fibers with reduced wall thickness to achieve complete and homogeneous oxidation, thereby avoiding the skin-core structure often observed in commercial carbon fibers. The specific strength and specific modulus of hollow carbon fibers approached the levels of commercial carbon fibers.
Article
Polymer Science
Ji-Young Noh, Yun-Su Kuk, Tae-Eun Kim, Sung-Ryong Kim, Ki-Young Kim, Jung-Hyurk Lim, Kyung-Min Kim
Summary: The synthesis of PAN co- or terpolymers as carbon fiber precursor using MA, IA, or AA as comonomers via solution polymerization was successful with high yield. The chemical structure and thermal stability of PAN polymers were characterized, and the effect of comonomer composition and weight ratio on cyclization reaction was investigated. Analysis of the cyclization temperature, efficiency, and char yield of PAN polymers under different thermal treatments was conducted.
Article
Polymer Science
Jie Liu, Lizhen He, Sai Ma, Jieying Liang, Yong Zhao, Hao Fong
Article
Materials Science, Multidisciplinary
Sai Ma, Jie Liu, Meimei Qu, Xiaoxu Wang, Ruoyu Huang, Jieying Liang
Article
Materials Science, Multidisciplinary
Sai Ma, Jie Liu, Qian Liu, Jieying Liang, Yong Zhao, Hao Fong
MATERIALS & DESIGN
(2016)
Article
Polymer Science
Meng Xu, Shijun Zhang, Jieying Liang, Hui Quan, Jianye Liu, Hongwei Shi, Dali Gao, Jie Liu
JOURNAL OF APPLIED POLYMER SCIENCE
(2014)
Article
Chemistry, Physical
Jia Yang, Yuchen Liu, Jie Liu, Zhigang Shen, Jieying Liang, Xiaoxu Wang
Article
Polymer Science
Wei Dang, Jie Liu, Xiangyu Huang, Jieying Liang, Chunhua Wang, Peng Miao, Yongzhen An, Xiaoxu Wang
Article
Materials Science, Multidisciplinary
Xue Yang, Yichun Ding, Zhigang Shen, Qian Sun, Fan Zheng, Hao Fong, Zhengtao Zhu, Jie Liu, Jieying Liang, Xiaoxu Wang
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Yuchen Liu, Xiangyu Huang, Jie Liu, Jieying Liang, Xiaoxu Wang
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Polymer Science
Wei Dang, Jie Liu, Xiaoxu Wang, Kaiqi Yan, Aolin Zhang, Jia Yang, Liang Chen, Jieying Liang
Article
Materials Science, Multidisciplinary
Shanshan Yi, Jie Liu, Chunhua Wang, Peng Miao, Jieying Liang, Xiaoxu Wang
Article
Engineering, Environmental
Chunyan Chen, Yao Lu, Jieying Liang, Liping Wang, Jingyun Fang
Summary: The role of nitrite (NO2-) in the transformation of aniline by sulfate radicals (SO4•-) and hydroxyl radicals (HO•) was investigated in this study. It was found that NO2- played an important catalytic role in both SO4•- and HO• systems, contributing to the overall degradation rates of aniline.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Liang Chen, Zhigang Shen, Jie Liu, Jieying Liang, Xiaoxu Wang
Article
Materials Science, Multidisciplinary
Yong-zhen An, Chun-hua Wang, Peng Miao, Xiao-xu Wang, Jie-ying Liang, Jie Liu
NEW CARBON MATERIALS
(2018)
Meeting Abstract
Chemistry, Multidisciplinary
Xun-An Ning, Jieying Liang, Taicheng An, Jian Sun, Xingwen Lu, Yaping Zhang
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Proceedings Paper
Engineering, Environmental
Jie Liu, Yong-zhen An, Xiao-xu Wang, Jie-ying Liang, Yan Xue
2016 INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND ENGINEERING (ESE 2016)
(2016)
