| PAN预氧丝环化程度的定量表征 |
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| 引用本文： | 高宇,高忠民,李向山,郭建强,温月芳,杨永岗. PAN预氧丝环化程度的定量表征[J]. 高等学校化学学报, 2009, 30(10): 2100-2103 |
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| 作者姓名： | 高宇 高忠民 李向山 郭建强 温月芳 杨永岗 |
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| 作者单位： | 吉林大学化学学院,长春,130012;吉林大学化学学院,长春,130012;吉林大学无机合成与制备化学国家重点实验室,长春,130012;吉林大学材料科学与工程学院,长春,130012;中国科学院山西煤炭化学研究所,中国科学院炭材料重点实验室,太原,030001 |
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| 摘 要： | 应用恒温定长方法制备聚丙烯腈(PAN)预氧丝, 并测量该预氧丝长周期多层结构的小角X射线衍射谱. 解析图谱发现, 经不同预氧化时间所得预氧丝的长周期L均为11.7 nm; 当预氧时间从20 min增加到210 min, 预氧丝中环化结构相的体积分数X0/L从7.9％增加到86.5％. 而应用广角X射线衍射法测得同批的预氧丝试样环化指数AI值则小很多. 因此, 用X0/L定量表征预氧丝环化程度更为严格准确.
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| 关 键 词： | PAN预氧丝 环化结构相 环化相体积分数 长周期X射线小角衍射 |
| 收稿时间： | 2009-01-09 |
PAN-based Preoxidative Fiber Cyclized Degree of Strict Quantitative Characterization |
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| GAO Yu,GAO Zhong-Min,LI Xiang-Shan,GUO Jian-Qiang,WEN Yue-Fang,YANG Yong-Gang. PAN-based Preoxidative Fiber Cyclized Degree of Strict Quantitative Characterization[J]. Chemical Research In Chinese Universities, 2009, 30(10): 2100-2103 |
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| Authors: | GAO Yu GAO Zhong-Min LI Xiang-Shan GUO Jian-Qiang WEN Yue-Fang YANG Yong-Gang |
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| Affiliation: | GAO Yu1,GAO Zhong-Min1,2,LI Xiang-Shan3,GUO Jian-Qiang4,WEN Yue-Fang4,YANG Yong-Gang4(1.College of Chemistry,2.State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,3.College of Materials Science and Engineering,Jilin University,Changchun 130012,China,4.Key Laboratory of Carbon Materials,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China) |
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| Abstract: | PAN-based preoxidative fiber was prepared under the conditions of constant temperature and fixed-length.Measurement of the preoxidative fiber needs the method of long-period multi-layer structure of small-angle X-ray scattering.Analysis of patterns show that long period L of the preoxidative fiber gotten by the different preoxidation time is average 11.7 nm;preoxidation time ranges from 20 min to 210 min,the volume fraction X0 /L of the cyclization phase volume fraction increases from 7.9% to 86.5%.However,... |
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| Keywords: | PAN-based preoxidative fiber Cyclization structure phase Cyclization phase volume fraction Long-period small-angle X-ray scattering |
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