| PREPARATION AND CHARACTERISATION OF HYDROPHOBIC AND CATIONIC MONTMORILLONITE |
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| 作者姓名： | W. Liu Y. Ni H. Xiao |
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| 作者单位： | Department of Light Chemical Engineering，Shandong Institute of Light Industry，Jinan 250100，PR China，Limerick Pulp and Paper Research Centre，University of New Brunswick，Fredericton，NB，Canada，E3B 6C2，Limerick Pulp and Paper Research Centre，University of New Brunswick，Fredericton，NB，Canada，E3B 6C2 |
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| 摘 要： | INTRODUCTIONDuring mechanical pulping, lipophilic extractives, mainly comprising fatty acids, rosin acids and esters, are often released from wood chips into pr℃ess waters as dispersed colloidal substances. These colloidal substances must be controlled and maintained at a low level, otherwise they often cause various problems in the papermaking pr℃ess as well as in the final product, e.g. deposits on pr℃essing equipment 1,2]. Using highly cationic fixatives may help to reduce the pro…
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PREPARATION AND CHARACTERISATION OF HYDROPHOBIC AND CATIONIC MONTMORILLONITE |
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| W. Liu,Y. Ni,H. Xiao.PREPARATION AND CHARACTERISATION OF HYDROPHOBIC AND CATIONIC MONTMORILLONITE[J].Journal of Tianjin University of Science & Technology,2004,19(Z1). |
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| Authors: | WLiu YNi HXiao |
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| Institution: | 1. Department of Light Chemical Engineering,Shandong Institute of Light Industry,Jinan 250100, PR China
2. Limerick Pulp and Paper Research Centre,University of New Brunswick,Fredericton, NB, Canada, E3B 6C2 |
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| Abstract: | Hydrophilic and cationic montmorillonite is desirable for pitch control in the pulp and paper industry. In this paper, polyaminoamide - epichlorohydrin (PAE) modified montmorillonite was prepared. The modified montmorillonite was characterized using X-ray diffraction, FTIR and thermal gravimetric analysis. The amount of PAE intercalated and cationic charge densities of the modified montmorillonite were determined. Finally, it was found that both the solution and melt-intercalated samples with different charge densities exhibited strong interactions with dispersed colloidal rosin acid. |
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| Keywords: | montmorillonite polyaminoamide - epichlorohydrin hydrophobicity cationic charge pitch control |
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