Characterisation of the size and swelling kinetics of copolymer nano-spheres extracted from an emulsion

Nick Lenchenkov, Gerard Glasbergen, Cor van Kruijsdijk, Milos Vulovic, Erik Bos, Roman I. Koning, Flavia Cassiola

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The size distribution and swelling kinetics of copolymer nano-spheres extracted from an W/O emulsion was studied with dynamic light scattering (DLS) and transmission electron microscopy (TEM). TEM results were compared against DLS results. It was demonstrated that the size distribution for agglomerates (clusters) of particles match well with the size distribution obtained from DLS. Hence, less time consuming DLS tests can be used for the estimation of the size of nano-spheres in the future. Next, a novel procedure for the study of agglomeration and swelling rates separately with TEM was designed. The results of the study revealed that the spheres agglomerate and swell over time. The kinetics of the agllomeration is used for a population balance model to predict the size of spheres over time. This approach helps to understand how well the spheres can propagate in an oil reservoir over time.

Original languageEnglish
Pages (from-to)265-273
Number of pages9
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume535
DOIs
Publication statusPublished - 2017

Keywords

  • Electron microscopy
  • Improved oil recovery
  • Nano-spheres
  • Population balance model
  • Suspo-emulsion

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