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首页> 外文期刊>Applied Surface Science >In situ preparation of hydrophobic CaCO_3 in the presence of sodium oleate
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In situ preparation of hydrophobic CaCO_3 in the presence of sodium oleate

机译：在油酸钠存在下原位制备疏水性CaCO_3

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摘要

Hydrophobic CaCO_3 particles were directly prepared via carbonation of Ca(OH)_2 slurry in the presence of sodium oleate at room temperature. Sodium oleate was used to modify the surface property of CaCO_3 particles. The measurement of relative contact angle and active ratio indicated that CaCO_3 samples were hydrophobic. DTG, FT-IR and TEM analysis of the obtained product indicated that the hydrophobic property was attributed to the deposition of calcium oleate, produced in the reaction mixture, onto the surface of calcium carbonate particles. They were covered on the CaCO_3 crystals surface and modified their surface property; at the same time they own C=C bonds and could be polymerized or copolymerized later to give a polymeric monolayer.
机译：通过在室温下在油酸钠存在下将Ca（OH）_2浆液碳化来直接制备疏水性CaCO_3颗粒。油酸钠用于修饰CaCO_3颗粒的表面性能。相对接触角和活性比的测量表明CaCO_3样品是疏水的。所得产物的DTG，FT-IR和TEM分析表明，疏水性归因于反应混合物中产生的油酸钙在碳酸钙颗粒表面上的沉积。它们被覆盖在CaCO_3晶体表面上并改变了它们的表面性质。同时，它们拥有C = C键，可以稍后聚合或共聚，形成聚合物单层。

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