On the role of block copolymer additives for calcium carbonate crystallization:: Small angle neutron scattering investigation by applying contrast variation
On the role of block copolymer additives for calcium carbonate crystallization:: Small angle neutron scattering investigation by applying contrast variation
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DOI：
10.1063/1.1691736
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发表时间：
2004-05-15
影响因子：
4.4
通讯作者：
Cölfen, H
中科院分区：
文献类型：
--
作者：
Endo, H;Schwahn, D;Cölfen, H
用对比度变化小角中子散射技术研究了双亲水性嵌段共聚物聚乙二醇-聚甲基丙烯酸（PEG-b-PMAA）对碳酸钙（CaCO 3）形貌的影响。PEG-b-PMAA的加入强烈影响碳酸钙晶体的形貌和尺寸。为了确定聚合物和CaCO 3矿物的部分散射函数，我们开发了一种实验和理论方法，并采用一种复杂的方法从散射强度确定它们。部分散射函数给出每个组分的详细信息。特别地，聚合物的部分散射函数S-pp显示出具有Q（-2至-3）的单调斜率，其中散射矢量Q低（Q
The role of the double-hydrophilic block copolymer poly(ethylen glycol)-block-poly(methacrylic acid) (PEG-b-PMAA) on the morphogenesis of calcium carbonate (CaCO3) was studied by applying the contrast variation small angle neutron scattering technique. The morphology and size of CaCO3 crystals is strongly affected by the addition of PEG-b-PMAA. In order to determine the partial scattering functions of the polymer and CaCO3 mineral, we developed both an experimental and theoretical approach with a sophisticated method of their determination from the scattering intensity. Partial scattering functions give detailed information for each component. In particular, the partial scattering function of the polymer, S-pp, shows a monotonic slope with Q(-2 to -3) where the scattering vector Q is low (Q