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首页> 外文期刊>Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems >Preparation and modification of nano calcium carbonate filler from waste marble dust and commercial limestone for papermaking wet end application
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Preparation and modification of nano calcium carbonate filler from waste marble dust and commercial limestone for papermaking wet end application

机译：从废大理石粉和商业石灰石中制备和改性纳米碳酸钙填料，用于造纸湿法终端应用

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摘要

The objective of this work was to prepare low cost CaCO3 nanofillers for wet end papermaking application. CaCO3 nanofillers were successfully prepared from commercial limestone and white waste marble dust using wet carbonation technique. Anionic (sodium oleate) and cationic surfactants (CTAB) were used to modify the size, morphology and surface property of CaCO3. The prepared CaCO3 fillers were applied in paper handsheets and their effect on paper quality was systematically investigated. The results obtained from XRD and FTIR revealed that the prepared CaCO3 particles were typically calcite. The presence of surfactant during the preparation significantly reduced the particle size and changed the morphology from scalenohedral to rhombohedral as illustrated from TEM results. The surfactant modification of filler improved the retention and consequently all the paper optical properties significantly increased. However, the strength properties were practically unchanged despite the high retention values obtained compared with GCC, indicating improved affinity of the filler particles to the fibres. Oleate modified CaCO3 showed higher effect on retention, apparent density, opacity, and mechanical properties than the CTAB modified CaCO3.
机译：这项工作的目的是制备用于湿法造纸的低成本CaCO3纳米填料。 CaCO3纳米填料是采用湿法碳化技术成功地从商业石灰石和白色废大理石粉中制备的。阴离子（油酸钠）和阳离子表面活性剂（CTAB）用于修饰CaCO3的尺寸，形态和表面性质。将制得的CaCO3填料应用于手抄纸，并系统地研究了它们对纸质的影响。从XRD和FTIR获得的结果表明，制备的CaCO 3颗粒通常为方解石。 TEM结果表明，制备过程中表面活性剂的存在显着减小了粒径，并使形态从偏角面体变为菱面体。填料的表面活性剂改性改善了保留率，因此所有纸张的光学性能均显着提高。然而，尽管与GCC相比获得了高保留值，但强度性能实际上没有变化，这表明填料颗粒对纤维的亲和力得到改善。油酸改性的CaCO3比CTAB改性的CaCO3对保留，表观密度，不透明度和机械性能的影响更高。

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