Irreversible and reversible phase transitions of alkyl monolayers. Gas chromatographic evidence of polar solvent influence on the adsorbing properties of the layer
Irreversible and reversible phase transitions of alkyl monolayers. Gas chromatographic evidence of polar solvent influence on the adsorbing properties of the layer
复制标题
烷基单层的不可逆和可逆相变。
DOI：
10.1007/bf02261973
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发表时间：
1984
期刊：
影响因子：
1.7
通讯作者：
G. Untz
中科院分区：
文献类型：
--
作者：
D. Morel;J. Serpinet;G. Untz
摘要除了 Gilpin 在液相色谱中对烷基接枝的不可逆转化的观察之外，在用水性流动相替代有机流动相之后，我们描述了一些气相色谱实验，由于相同的溶剂释放过程，这些实验导致类似的（log Vs，I/T）图。我们在硅质载体或羟基化液体基质或 C22-烷基键合二氧化硅上使用石蜡膜。这些实验表明，这种不可逆转变和类熔化可逆转变是完全不同的现象。他们证实了至少三种单体烷基膜的存在。
SummaryFurther to Gilpin's observations in liquid chromatography of the irreversible transformation of alkyl grafts, following the replacement of an organic mobile phase by an aqueous one, we describe some gas chromatographic experiments which lead to similar (log Vs, I/T) plots, as a consequence of the same solvent release process.We use paraffin films on siliceous supports or hydroxylated liquid substrates or C22-alkyl bonded silica. These experiments demonstrate that this irreversible transition and the melting-like reversible transition are completely different phenomena. They confirm the existence of at least three kinds of monomeric alkyl films.