Microheterogeneity in binary mixtures of propyl alcohols with water: NIR spectroscopic, two-dimensional correlation and multivariate curve resolution study

摘要: Abstract Separation at a molecular level is responsible for macroscopic structure of liquids and leads to anomalous behavior the physicochemical properties mixtures. Here, we present study microheterogeneity in binary mixtures propyl alcohols with water. Both are fully miscible water but due different structures one may expect some differences interaction level. Thus, special attention was paid changes separation alcohol molecules going from 1-propanol 2-propanol. Our results indicate that spite structures, both reveal similar properties. In water-poor region same environment as those pure liquid alcohols, while do not form separate clusters dispersed organic phase. At higher content interacting OH groups alcohol's clusters. The transition state formation continuous process. largest deviation ideal mixture appears an alcohol:water molar ratio 1:2. differ mainly degree hydration less hydrated than 2-propanol, hence 1-propanol/water more heterogeneous. On basis available literature data can conclude extent alcohol/water related self-association alcohol.