| 消泡剂TBP对起泡剂C12E8表面性质的影响 |
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| 引用本文： | 韩国彬,黄泰山,吴金添,陈良坦,魏光,韩琪,曹为.消泡剂TBP对起泡剂C12E8表面性质的影响[J].厦门大学学报(自然科学版),1999,38(2):247-251. |
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| 作者姓名： | 韩国彬 黄泰山 吴金添 陈良坦 魏光 韩琪 曹为 |
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| 作者单位： | 厦门大学化学系,固体表面物理化学国家重点实验,物理化学研究所,厦门,361005 |
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| 基金项目： | 国家教委留学回国人员科研启动基金资 |
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| 摘 要： | 报道了消泡剂ＴＢＰ（Ｔｒｉｂｕｔｙｌｐｈｏｓｐｈａｔｅ）对起泡剂Ｃ１２Ｅ８（Ｏｃｔａｅｔｈｙｌｅｎｅｇｌｙｃｏｌｍｏｎｏｄｏ－ｄｅｃｙｌｅｔｈｅｒ）表面吸附性质和表面弹性的影响．文中通过对理想表面模型－Ｌａｎｇｍｕｉｒ－Ｓｚｙｓｚｋｏｗｓｋｉ吸附等温线和非理想表面模型－Ｆｒｕｍｋｉｎ吸附方程的研究，得出起泡剂Ｃ１２Ｅ８溶液表面吸附－脱附活化能与吸附量有关的结果，并且阐明了Ｃ１２Ｅ８浓度小于ｃｍｃ时消泡剂ＴＢＰ的消泡机理．可以认为ＴＢＰ降低了Ｃ１２Ｅ８的表面吸附量以及表面吸附和脱附活化能，有利于表面张力梯度的修复是通过变形表面下溶液分子的直接吸附，从而削弱其表面弹性，降低泡沫的稳定性
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| 关 键 词： | 泡沫的稳定性，消泡机理，表面吸附模型，表面弹性 |
Influence of Antifoaming Agent TBP on the Surface Properties of Foaming Agent C12E8 |
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| Han Guobin,Huang Taishan,Wu Jintian,Chen Liangtan,Wei Guang,Han Qi,Cao Wei.Influence of Antifoaming Agent TBP on the Surface Properties of Foaming Agent C12E8[J].Journal of Xiamen University(Natural Science),1999,38(2):247-251. |
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| Authors: | Han Guobin Huang Taishan Wu Jintian Chen Liangtan Wei Guang Han Qi Cao Wei |
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| Abstract: | The influence of antifoaming agent TBP on foaming agent C 12 E 8 adsorption from aqueous solution has been investigated by surface tensiometry at 293K. The Frumkin equation of state was found as fits well to experimental surface pressure curves. This shows that the adsorption and desorption energies depend on surface concentration. When the concentration of C 12 E 8 is below the cmc, the addition of TBP to C 12 E 8 aqueous solution shows to reduce the surface excess concentration of C 12 E 8, non ideality parameter and the surface elasticity of such solution that has relations with the stability of foam. The mechanism of antifoaming action is, therefore, related to the destruction of the surface plastic film by the antifoam. |
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| Keywords: | Surface model of adsorption Surface elasticity Mechanism of antifoaming action Stability of foam |
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