Influence of plasma treatment on microstructures and acid-base surface energetics of nanostructured carbon blacks: N2 plasma environment
Influence of plasma treatment on microstructures and acid-base surface energetics of nanostructured carbon blacks: N2 plasma environment
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DOI：
10.1006/jcis.2001.7920
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发表时间：
2001-12
影响因子：
9.9
通讯作者：
Soojin Park;Jeong-Soon Kim
中科院分区：
文献类型：
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作者：
Soojin Park;Jeong-Soon Kim
摘要本文研究了N2等离子体对炭黑表面和微观结构的影响。XRD测量显示，层间距d002和沿c轴的晶体尺寸沿着LC随着等离子体处理而减小，这可以导致从弱的或不稳定的碳微结构中去除。在这项工作中，电子受体（γS+）和电子供体（γS−）参数的固体的表面自由能的测定提出了使用水，二碘甲烷和乙二醇的极性测试液体。很明显，处理的主要明显改善是在炭黑表面自由能的伦敦色散分量。随着处理时间的延长，特定组分的γS+和γS−也随之增加，导致所研究的炭黑表面官能团的改善，酸性和碱性表面官能团以及离子交换性能的增加。
Abstract In this work, the effect of N2 plasma treatment generated by radiofrequency was investigated in the context of surface and microstructure characteristics of carbon blacks. XRD measurements revealed that the interlayer spacing, d002 and crystalline size along the c axis, LC, decrease with plasma treatment, which can result in the removal from weak or unstable microstructures of carbons. In this work, the determination of electron-acceptor (γS+) and -donor (γS−) parameters of the surface free energy of a solid was proposed by the polar testing liquids using a water, diiodomethane, and ethylene glycol. It was clear that the major obvious improvement of the treatment is in the London dispersive component of the surface free energy of carbon blacks. And both γS+ and γS− for the specific component also increased with increasing treatment time, resulting in improvement in the surface functional groups of the carbon blacks studied, together with increases in acidic and basic surface functional groups and ion-exchange properties.