Liu Wenxia, Ni Yonghao, Xiao Huining
Limerick Pulp and Paper Research Center, University of New Brunswick, Fredericton, NB E3B 6C2, Canada.
J Colloid Interface Sci. 2004 Jul 15;275(2):584-9. doi: 10.1016/j.jcis.2004.02.008.
Organophilic and cationic montmorillonite is desirable for pitch control in the pulp and paper industry. In this paper, polyaminoamide-epichlorohydrin (PAE)-modified montmorillonite was prepared via either solution intercalation or melt intercalation of polyaminoamide into montmorillonite, followed by the reaction with epichlorohydrin. The modified montmorillonite samples were characterized by FTIR spectroscopy, X-ray diffraction, and thermal gravimetric analysis. The amount of PAE intercalated and the surface charge densities of cationic-modified montmorillonite were determined. It was found that melt intercalation appeared to be more effective in the inclusion of PAE than solution intercalation. However, both solution- and melt-intercalated samples with various surface charge densities exhibited strong affinity toward dispersed colloidal rosin acid.
亲有机性和阳离子性蒙脱石对于制浆造纸工业中的沥青控制是理想的。本文通过将聚氨基酰胺溶液插层或熔融插层到蒙脱石中，然后与环氧氯丙烷反应，制备了聚氨基酰胺 - 环氧氯丙烷（PAE）改性蒙脱石。通过傅里叶变换红外光谱、X射线衍射和热重分析对改性蒙脱石样品进行了表征。测定了插层的PAE量和阳离子改性蒙脱石的表面电荷密度。发现熔融插层在PAE的插入方面似乎比溶液插层更有效。然而，具有不同表面电荷密度的溶液插层和熔融插层样品对分散的胶体松香酸都表现出很强的亲和力。
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