| 淀粉-脂肪酸复合物包覆改性硅藻土的制备及表征 |
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| 引用本文： | 尚 尉,孟晓敏,梁虎南,谢金宏,段鹏飞.淀粉-脂肪酸复合物包覆改性硅藻土的制备及表征[J].中国造纸学报,2015,30(3):16-19. |
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| 作者姓名： | 尚 尉 孟晓敏 梁虎南 谢金宏 段鹏飞 |
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| 作者单位： | 1.东北电力大学化学工程学院,吉林省吉林市,132012；2.东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨,150040,1.东北电力大学化学工程学院,吉林省吉林市,132012,1.东北电力大学化学工程学院,吉林省吉林市,132012,1.东北电力大学化学工程学院,吉林省吉林市,132012,1.东北电力大学化学工程学院,吉林省吉林市,132012 |
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| 基金项目： | 本课题获吉林省科技发展计划项目(20140204040GX)和吉林市科技发展计划项目(2013625008)的资助。 |
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| 摘 要： | 采用淀粉-脂肪酸复合物对硅藻土进行包覆改性,研究了淀粉-脂肪酸复合物对硅藻土的包覆效果、改性硅藻土的留着率及抗剪切性能；采用扫描电子显微镜、Zeta电位仪、粒度分析仪对改性硅藻土进行表征。结果表明,淀粉-脂肪酸复合物可有效包覆硅藻土,淀粉沉积率达98%以上；与未改性硅藻土相比,改性硅藻土的Zeta电位高,抗剪切性能好；当改性硅藻土添加量为10%时,其留着率超过73%。
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| 关 键 词： | 淀粉 脂肪酸 硅藻土 留着率 |
Preparation and Characterization of Modified Diatomite Coated with Starch and Fatty Acid |
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| Abstract: | In order to improve the bonding between diatomite filler and lignocellulosic fiber, diatomite particles were coated with a complex which was prepared with starch and fatty acid. The coating efficiency of starch on diatomite particle surfaces was investigated by measuring the dissolved starch in the supernatant. The experimental results indicated that more than 98% of the applied starch was precipitated onto the surface of the fillers. At a dosage of 10% of the modified filler, the retention of the modified filler was higher than 73%, and the modified filler had relatively good resistance against moderate shear force. The morphology, particle size, and Zeta potential of the modified filler were also determined with scanning electron microscopy, OMEC particle size analyzer, and Zhongchen Zetasizer, respectively. |
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