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Effects of Tx-100-SDS on crystal growth of calcium carbonate in reverse microemulsion solution

机译:Tx-100-SDS对反相微乳液溶液中碳酸钙晶体生长的影响

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摘要

Syntheses of CaCO_3 crystals in reverse microemulsion solutions containing 1-(1,1,3,3-tetramethylbu-tyl)-4-hydroxypolyethoxybenzene (Tx-100), sodium dodecyl sulfate (SDS) and their equimolar mixture were carried out at room temperature respectively. The crystal phase of CaCO_3 is changed from calcite at low concentrations to vaterite at high concentrations of SDS and Tx-100. From rods at low concentration to olivary spheres at high concentration, SDS can influence the morphology of CaCO_3 significantly, while almost no such effect for Tx-100. Hollow spheres, olivary spheres and even two fused olivary spheres of CaCO_3 were produced at different concentrations of Tx-100-SDS, and the variation of crystal phase is opposite to that in the presence of SDS or Tx-100 alone. The effects of interaction of SDS with Tx-100 on morphology and crystal phase of CaCO_3 were discussed. It was estimated to put forward that the formation of hollow CaCO_3 crystals was caused by the collaborating actions of SDS template and TX-100 inhibition.
机译:在室温下进行包含1-(1,1,3,3-四甲基丁基)-4-羟基聚乙氧基苯(Tx-100),十二烷基硫酸钠(SDS)及其等摩尔混合物的反相微乳液溶液中CaCO_3晶体的合成分别。 CaCO_3的晶相从低浓度的方解石变为高浓度的SDS和Tx-100的球v石。从低浓度的棒到高浓度的橄榄球,SDS都可以显着影响CaCO_3的形貌,而对Tx-100几乎没有这种作用。在不同浓度的Tx-100-SDS下产生CaCO_3的空心球,橄榄球甚至两个融合的橄榄球,其结晶相的变化与仅存在SDS或Tx-100时的相反。讨论了SDS与Tx-100的相互作用对CaCO_3的形貌和晶相的影响。据估计,中空CaCO_3晶体的形成是由SDS模板和TX-100抑制的协同作用引起的。

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