Next Article in Journal
Colloids and Interfaces
Next Article in Special Issue
Composite Foaming Agents on the Basis of High-Molecular Natural Surfactants
Previous Article in Journal
Synthesis and Characterization of Hybrid Particles Obtained in a One-Pot Process through Simultaneous Sol-Gel Reaction of (3-Mercaptopropyl)trimethoxysilane and Emulsion Polymerization of Styrene
Previous Article in Special Issue
The Use of Polymer and Surfactants for the Microencapsulation and Emulsion Stabilization
Article Menu

Export Article

Open AccessFeature PaperArticle
Colloids Interfaces 2017, 1(1), 8;

Multilayer Adsorption of Heptane Vapor at Water Drop Surfaces

Institute of Biocolloid Chemistry, 03680 Kyiv (Kiev), Ukraine
Institute of Colloid Chemistry and Chemistry of Water, 03680 Kyiv (Kiev), Ukraine
SINTERFACE Technologies, 12489 Berlin, Germany
Max-Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
Institute of Petroleum Engineering, University of Tehran, 14174-66191 Tehran, Iran
Author to whom correspondence should be addressed.
Received: 16 November 2017 / Revised: 30 November 2017 / Accepted: 1 December 2017 / Published: 4 December 2017
(This article belongs to the Special Issue Selected Papers from Bubble & Drop 2017)
Full-Text   |   PDF [2973 KB, uploaded 13 December 2017]   |  


The measured dynamic surface tension of a water drop in air saturated by heptane vapor shows a sharp decrease from about 60 mN m−1 to 40 mN m−1, and less after a certain adsorption time. The observed adsorption kinetics is analyzed by a theoretical model based on multilayer adsorption of alkanes from the vapor phase at the water surface. The model assumes a dependence of the kinetic coefficients of adsorption and desorption on the surface coverage and in equilibrium it reduces to the classical Brunauer–Emmett–Teller adsorption isotherm. The calculated time dependencies of adsorption and surface tension agree well with experimental data and predict a five-layer adsorption of heptane. View Full-Text
Keywords: heptane adsorption from vapor phase; drop profile analysis tensiometry; adsorption kinetics model; multilayer adsorption heptane adsorption from vapor phase; drop profile analysis tensiometry; adsorption kinetics model; multilayer adsorption

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Kovalchuk, V.I.; Aksenenko, E.V.; Fainerman, V.B.; Javadi, A.; Miller, R. Multilayer Adsorption of Heptane Vapor at Water Drop Surfaces. Colloids Interfaces 2017, 1, 8.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
Colloids Interfaces EISSN 2504-5377 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top