ADSORPTION BEHAVIOR OF A SILANE COUPLING AGENT ONTO A COLLOIDAL SILICA SURFACE STUDIED BY SI-29 NMR-SPECTROSCOPY
ADSORPTION BEHAVIOR OF A SILANE COUPLING AGENT ONTO A COLLOIDAL SILICA SURFACE STUDIED BY SI-29 NMR-SPECTROSCOPY
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DOI：
10.1016/0021-9797(89)90420-7
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发表时间：
1989-04-01
影响因子：
9.9
通讯作者：
ASAKURA, T
中科院分区：
文献类型：
--
作者：
NISHIYAMA, N;HORIE, K;ASAKURA, T
本文用~（29）Si NMR研究了硅烷偶联剂在硅胶表面的吸附机理，并与自旋标记的ESR数据进行了比较。二聚体物种被发现是主要物种吸附到硅胶表面在硅烷溶液中。吸附行为显示出依赖于所使用的硅烷偶联剂的浓度。在低浓度下，硅烷偶联剂似乎以规则方式吸附，而在较高浓度下，它以随机方式吸附。
The adsorption mechanisms of a silane coupling agent onto a colloidal silica surface are investigated by means of29Si NMR and compared with previous spin-labeled ESR data. The dimer species are found to be the predominant species adsorbed onto a colloidal silica surface in silane solution. The adsorption behavior shows a dependence on the concentration of the silane coupling agent used. At low concentrations, the silane coupling agent appears to be adsorbed in regular fashion, while at higher concentrations, it is adsorbed in random fashion.