Kinetics and Characterization of Preparing Conductive Nanofibrous Membrane by In-situ Polymerization of Polypyrrole on Electrospun Nanofibers
发布时间：2023-01-30点击次数：
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影响因子：16.744
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DOI码：10.1016/j.cej.2021.133531
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发表刊物：Chemical Engineering Journal
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关键字：Conductive membrane；In-situ polymerization；Kinetics；Polypyrrole；Electrospun nanofiber
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摘要：Polypyrrole (PPy) is a conductive polymer that can be fabricated into various structures via in-situ polymerization for different applications. However, a kinetics study of its in-situ polymerization is needed for a better understanding of the mechanisms of pyrrole polymerization. This paper develops two different kinetics models based on existing PPy polymerization mechanisms. The most suitable mechanism is first identified by comparing the model results with experimental data. Then, in-situ polymerizations of PPy on electrospun fibrous polyacrylonitrile (PAN) templates were produced at temperatures ranging from 273 to 285 K. The results show that the overall reaction rate of the in-situ polymerization process in the presence of electrospun fibrous template is faster than that without the template. Further investigation confirms that the increase in the overall reaction rate is attributed to the enhanced reactions between oxidized pyrrole oligomers and neutral pyrrole monomers, as the corresponding reaction rate constant and activation entropy increased by 158.2–209.6% and 37.7%, respectively. The reason is that the considerable number of available reaction sites between oxidized oligomers and neutral monomers are created by the fibrous template. In addition, the composite membrane obtained from the in-situ polymerization exhibited well-developed fibrous nanostructure, good electrical conductivity (0.29 0.04 S∙m−1), sufficient mechanical strength (UTS of 8.7 MPa) and relatively stable thermal properties (up to 250 °C).
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论文类型：期刊论文
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论文编号：133531
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卷号：433
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是否译文：否
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发表时间：2022-04-01
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收录刊物：SCI、EI
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发布期刊链接：https://www.sciencedirect.com/science/article/pii/S1385894721051056
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俞和胜
职务：Professor
主要任职：
个人信息
- 教授
博士生导师
硕士生导师 - 教师拼音名称：yuhesheng
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- 所在单位：化工学院
- 职务：Professor
- 办公地点：中国矿业大学文昌校区综合楼203
- 性别：男
- 学位：博士
- 职称：教授
- 毕业院校：加拿大滑铁卢大学
学术荣誉：
- 2020当选：江苏特聘教授
曾获荣誉：
- 2020-08-01江苏特聘教授
- 2014-10-15加拿大国家自然科学基金工业博士后奖学金
- 2020-08-01中国矿业大学“高端人才计划”攀登学者
- 2019-06-01江苏省“六大人才高峰”高层次人才
- 2018-06-28江苏省“双创博士”
- 2016-08-01AIChE Journal Editor’s Choice Paper
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