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Nanomaterials
Special Issues
Rheological Properties of Nanomaterials
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Rheological Properties of Nanomaterials

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: closed (20 December 2020) | Viewed by 4775

Special Issue Editor

Prof. Dr. Petr Filip

E-Mail Website
Guest Editor
Institute of Hydrodynamics, Czech Academy of Sciences, 166 12 Prague, Czech Republic
Interests: electrospinning; rheology; constitutive modeling; behavior of polymeric materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rheology plays a crucial role in characterizing nanomaterials or in evaluation whether the source materials are suitable for production of nanomaterials. As an example it is possible to mention that absence of elastic component in polymer solution usually causes impossibility of production of electrospun nanofibrous mats. At present, nanomaterials are produced for concrete applications: biomedical (face masks, tissue engineering, drug delivery, etc.), high energy density batteries, various industrial applications. In all these branches the nanomaterials are supposed to acquire specific attributes, in other words to be tailor-made with the corresponding properties. One of the means used for this characterization is represented by rheology, by means of which an adequate tuning of material characteristics is possible. The smart (intelligent) materials can be evaluated by magneto- or electro-rheological procedures.  

This Special Issue of “Rheological Properties of Nanomaterials” will attempt to cover the recent advancements in the development of nanomaterials from the viewpoint of a rheological approach simultaneously respecting other process parameters.

Prof. Dr. Petr Filip
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Nanomaterials
  • Rheological characteristics
  • Rheometry
  • Viscoelasticity
  • Rheology
  • Polymer solution/melt

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Published Papers (1 paper)

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Research

19 pages, 4829 KiB  
Article
Effect of Nanoparticles with Different Chemical Nature on the Stability and Rheology of Acrylamide Sodium Acrylate Copolymer/Chromium (III) Acetate Gel for Conformance Control Operations
by Saray Pérez-Robles, Cristian A. Matute, Jeison R. Lara, Sergio H. Lopera, Farid B. Cortés and Camilo A. Franco
Nanomaterials 2020, 10(1), 74; https://doi.org/10.3390/nano10010074 - 30 Dec 2019
Cited by 22 | Viewed by 4213
Abstract
During enhanced oil recovery (EOR), reservoir heterogeneities and fluids distributions promote preferential flow channels formation. Therefore, different types of gels have been proposed to improve swept efficiency on chemical flooding by plugging high permeability zones. The purpose of this article is to evaluate [...] Read more.
During enhanced oil recovery (EOR), reservoir heterogeneities and fluids distributions promote preferential flow channels formation. Therefore, different types of gels have been proposed to improve swept efficiency on chemical flooding by plugging high permeability zones. The purpose of this article is to evaluate the effect that nanotechnology has on the inhibition of syneresis and the rheological properties of the Acrylamide Sodium Acrylate Copolymer/Chromium (III) Acetate gel system for conformance applications in mature reservoirs. Thus, a methodology is proposed in four stages: First, (I) nanoparticles synthesis, and characterization, followed by (II) bottle tests to monitor gelation kinetics and syneresis degree at 70 °C, then (III) description of the rheological evaluation on static and dynamic conditions to calculate gelation time and viscoelastic modulus (G’ and G”), and finally (IV) the displacement test with the best gel system in the presence of nanoparticles. Results showed that the best nanoparticle was the chromium oxide (Cr2O3), which represented the lesser syneresis degree and increased gelation time. Syneresis of gel samples in the presence of Cr2O3 at day 30 was under 1% for gels prepared with 4000, 6000, and 8000 mg·L−1 of polymer, and polymer to crosslinker ratio (p/c) of 40:1. Regarding SiO2, MgO, and Al2O3 nanoparticles, results show an improvement of gel strength. However, their thermal stability in terms of syneresis was lower. Displacement test in a triple parallel Slim Tube was able to recover an additional 37% of oil of the total oil present in the sandpacks, confirming the effectivity of the system when 100 mg·L−1 of Cr2O3 nanoparticles are included. Full article
(This article belongs to the Special Issue Rheological Properties of Nanomaterials)
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