碳微球的离子化表面修饰

化工学报 ›› 2010, Vol. 61 ›› Issue (10): 2662-2666.

碳微球的离子化表面修饰

杨永珍;韩艳星;李莎;刘红艳;刘旭光;许并社

新材料界面科学与工程教育部重点实验室（太原理工大学）;太原理工大学材料科学与工程学院;太原理工大学化学化工学院

出版日期:2010-10-05 发布日期:2010-10-05

Surface modification of carbon microspheres by ionization

YANG Yongzhen;HAN Yanxing; LI Sha; LIU Hongyan; LIU Xuguang; XU Bingshe

Online:2010-10-05 Published:2010-10-05

摘要/Abstract

摘要：

碳微球（CMSs）经HNO3和H2O2混酸处理后，与NaOH碱溶液进行离子化反应，考察离子化反应前后CMSs表面性质的差异;通过场发射扫描电子显微镜、元素分析等对产物的形貌和表面结构进行了分析，同时还考察了产物在不同溶剂中的溶解性差异。结果表明，HNO3和H2O2混酸处理得到的CMSs- (COOH)_n与NaOH溶液进行反应后，生成大量—COONa离子基团，形成了CMSs- (COONa)_n，其表层出现沟壑，在水中的分散性明显改善，亲水性显著增强;然而，NaOH对未经酸处理的CMSs修饰效果欠佳，团聚现象依然严重;由于CMSs- (COONa)_n强的离子性，很难在有机溶剂中分散。

关键词:

碳微球, 离子化, 修饰

Abstract:

Carbon microspheres (CMSs) were first oxidized with a mixture of concentrated H₂O₂ and HNO₃, and alkali treatment onto the CMSs surface was perfomed by ionization with NaOH solution.The morphologies of all samples were characterized with field emission scanning electron microscopy and elemental analysis.The dispersibility of CMSs before and after modification in different solvents was studied.The results showed that the products were of rough surface and CMSs-(COONa)_n ionic compound was formed after acid-and-alkali treatment.Their stability gradually changed from nonreactivity to hydrophilicity; but the properties of CMSs treated simply by NaOH without acid oxidation treatment 〖JP2〗were hardly improved and the products were hardly dispersed in organic solvents as a result of good ionization.

Key words:

碳微球, 离子化, 修饰

杨永珍, 韩艳星, 李莎, 刘红艳, 刘旭光, 许并社. 碳微球的离子化表面修饰 [J]. 化工学报, 2010, 61(10): 2662-2666.

YANG Yongzhen, HAN Yanxing, LI Sha, LIU Hongyan, LIU Xuguang, XU Bingshe. Surface modification of carbon microspheres by ionization[J]. CIESC Journal, 2010, 61(10): 2662-2666.

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