| 聚乙烯亚胺在SiC粉体上的定量吸附研究 |
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| 引用本文： | 孙静,孙伟燕,高濂,郭景坤.聚乙烯亚胺在SiC粉体上的定量吸附研究[J].无机材料学报,2000,15(2):259-263. |
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| 作者姓名： | 孙静 孙伟燕 高濂 郭景坤 |
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| 作者单位： | 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室，上海 200050 |
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| 摘 要： | 利用紫外－可见光谱研究了分散剂聚乙烯亚胺在粉体ＳｉＣ上的定量吸附情况，加入酸性ＰＥＩ后粉体ＳｉＣ表面的电性发生改变，等电点由ＰＨ－２．０移至ＰＨ＝１０．５，分散 粉体上的吸附满足Ｌａｎｇｍｕｉｒ单层吸附方程，对分散为说，单层吸附值为０．０１７２ｍｇ／ｍＬ，对分散剂ＰＥＩ－Ｈ来说，意志支吸附值为０．０２０８ｍｇ／ｍＬ，ｔｊｅｔ ｐｇｋｌｔｊｈ ｋｆ ｘａ ｑｈ ｉｑｙｕｙｇｈ ｕｐｇ ｂｐ ｔｋｈ
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| 关 键 词： | 聚乙烯亚胺 定量吸附 粉体 碳化硅 分散剂 |
| 文章编号： | CN31-1363(2000)02-0259-05 |
| 收稿时间： | 1999-4-27 |
| 修稿时间： | 1999年4月27日 |
Adsorption Behaviour of PEI on Silicon Carbide Powder |
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| SUN Jing,SUN Wei-yan,GAO Lian,GUO Jing-Kun.Adsorption Behaviour of PEI on Silicon Carbide Powder[J].Journal of Inorganic Materials,2000,15(2):259-263. |
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| Authors: | SUN Jing SUN Wei-yan GAO Lian GUO Jing-Kun |
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| Affiliation: | StateKeyLabofHighPerformanceCeramics&SuperfineMicrostructure;ShanghaiInstituteofCeramics;ChineseAcademyofSciences;Shanghai200050;China |
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| Abstract: | Adsorption behaviour of PEI on silicon carbide powder was measured by using UV spectrum. The surface charge of SiC powder was changed greatly after the addition of PEI, its IEP changed from pH=2.0 to pH=10.5. Adsorption isotherms of dispersant on the silicon carbide surface were investigated. Their adsorption behaviour belongs to Langmuir monolayer adsorption type. The maximum amount of PEI--H (pH=3.57) adsorbed on the SiC surface is 0.0172mg/mL and that of PEI--H (pH=6.61) is 0.0208mg/mL. IR spectra were obtained to verify this adsorption effect. |
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| Keywords: | polyethylene imine (PEI) quantitative adsorption UV spectrum silicon carbid |
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