| 超分散剂在莠去津颗粒表面吸附的XPS和SEM分析 |
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| 引用本文： | 徐妍,孙宝利,马超,张平,蔡梦玲,吴学民. 超分散剂在莠去津颗粒表面吸附的XPS和SEM分析[J]. 光谱学与光谱分析, 2011, 31(9): 2569-2573. DOI: 10.3964/j.issn.1000-0593(2011)09-2569-05 |
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| 作者姓名： | 徐妍 孙宝利 马超 张平 蔡梦玲 吴学民 |
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| 作者单位： | 1. 中国农业大学应用化学系，农业部农药化学与应用重点开放实验室，北京 100193
2. 中国农业科学院农业环境与可持续发展研究所，北京 100081 |
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| 基金项目： | 国家自然科学基金项目(40671096); 国家“十二五”科技支撑计划项目(2011BAE06B06)资助 |
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| 摘 要： | 用X射线光电子能谱(X-ray photoelectron spectroscopy，XPS)研究了聚羧酸型梳状共聚物超分散剂吸附于莠去津颗粒样品表面的电子状态，计算了吸附厚度。结果表明，吸附分散剂后，莠去津颗粒界面的N(1s)和Cl(2p)谱峰强度明显减弱，Cl(2s)几乎消失，C(1s)，O(1s)和Na(1s)谱峰强度则明显增强，这主要是分散剂中C，O和Na的贡献，且吸附分散剂后能在莠去津颗粒界面形成良好的吸附保护膜，其厚度约为24 nm。用扫描电子显微镜(scanning electron microscope，SEM)研究了样品表面形貌，研究发现吸附分散剂后莠去津颗粒变小、分布有序，使莠去津在水中能够获得稳定的悬浮性能。本文研究结果为莠去津环保剂型悬浮剂的应用提供了重要信息。
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| 关 键 词： | X射线光电子能谱 扫描电子显微镜 莠去津 超分散剂 吸附 |
| 收稿时间： | 2010-12-10 |
XPS and SEM Spectroscopy Study of Hyperdispersant on Atrazine Surface |
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| XU Yan,SUN Bao-li,MA Chao,ZHANG Ping,CAI Meng-ling,WU Xue-min. XPS and SEM Spectroscopy Study of Hyperdispersant on Atrazine Surface[J]. Spectroscopy and Spectral Analysis, 2011, 31(9): 2569-2573. DOI: 10.3964/j.issn.1000-0593(2011)09-2569-05 |
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| Authors: | XU Yan SUN Bao-li MA Chao ZHANG Ping CAI Meng-ling WU Xue-min |
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| Affiliation: | 1. Department of Applied Chemistry, China Agricultural University, Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, China2. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: | The authors studied the electronic condition of comb-shaped copolymer of polycarboxylic acid type hyperdispersant adsorbed on the surface of atrazine particles with X-ray photoelectron spectroscopy(XPS).The thickness of the adsorption was calculated.The results suggested that after adsorbing the dispersant,the peak intensity of N(1s) and Cl(2p) of the interface of atrazine particle decreased sharply,while the absorption of Cl(2s) almost diminished.Meanwhile the peak intensity of C(1s),O(1s) and Na(1s) incre... |
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| Keywords: | X-ray photoelectron spectroscopy Scanning electron microscope Atrazine Hyperdispersant Adsorption |
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