| 纳米碳酸钙湿法表面改性的研究及其机理探讨 |
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| 引用本文： | 章正熙,华幼卿,陈建峰,王玉红.纳米碳酸钙湿法表面改性的研究及其机理探讨[J].北京化工大学学报(自然科学版),2002,29(3):49-52. |
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| 作者姓名： | 章正熙 华幼卿 陈建峰 王玉红 |
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| 作者单位： | 1. 北京化工大学,材料科学与工程学院,北京,100029;2. 北京化工大学,教育部超重力工程研究中心,北京,100029 |
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| 基金项目： | 中国石油化工集团公司资助项目;500007; |
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| 摘 要： | 研究了脂肪酸盐改性纳米碳酸钙的湿法工艺及其影响因素,对改性效果进行了表征,确定了最佳改性时间(30～40 min)、改性温度(40～50 ℃)和改性剂用量(3%～5%).同时,采用红外光谱、TEM对改性后的纳米碳酸钙进行了表征,红外谱图表明脂肪酸盐通过离子键形式吸附在碳酸钙表面;TEM表明改性前后碳酸钙粒子尺寸基本没有变化.最后,简要分析了其改性机理,认为二阶段模型能够较好地解释吸附历程.
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| 关 键 词： | 纳米碳酸钙 表面改性 脂肪酸盐 |
| 修稿时间： | 2001年9月28日 |
Surface modification and adsorption mechanism of nanometer CaCO3 |
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| ZHANG Zheng-xi,HUA You-qing,CHEN Jian-feng,WANG Yu-hong.Surface modification and adsorption mechanism of nanometer CaCO3[J].Journal of Beijing University of Chemical Technology,2002,29(3):49-52. |
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| Authors: | ZHANG Zheng-xi HUA You-qing CHEN Jian-feng WANG Yu-hong |
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| Institution: | 1. College of Materials Science and Engineering; 2. Research Center of the Ministry of Education for High Gravity Enigeering and Technology; Beijing University of Chemical Technology; Beijing 1000 |
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| Abstract: | A method by which the nanometer CaCO3 was modified with fatty acid salt was studied, and the better technnical factors (time 30～40min、temperature 40～50℃ and modifying agent dosage 3%～5% ) were obtained. The surface characterization of the modified CaCO3 was investigated by means of FTIR, TEM, etc. IR analysis shows that fatty acid salt has attached to CaCO3 surface by ionic bond. TEM shows that the size of the modified CaCO3 is the same as that of the unmodified CaCO3. Finally, The modification mechanisms were analyzed briefly,and a two-stage model xould be used to explain the process of adsorption. |
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| Keywords: | nanometer CaCO3 surface modification fatty acid salt |
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