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Polymers
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Colloid and Interface
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Colloid and Interface

A special issue of Polymers (ISSN 2073-4360).

Deadline for manuscript submissions: closed (29 February 2020) | Viewed by 17099

Special Issue Editor

Prof. Dr. Erin Koos

E-Mail Website
Guest Editor
KU Leuven, Department of Chemical Engineering, 3000 Leuven, Belgium
Interests: polymer colloids; microgels and gels; polymers in solution; rheology of surfactants and polymers; self-assembly of polymers; functionalization of surfaces with polymers; polymers in medicine and controlled release

Special Issue Information

Dear Colleagues,

The annual ECIS Conference brings together participants from the broad, interdisciplinary field of colloid and interface science, including chemists, physicists, biologists, and engineers. ECIS 2019 (www.ecis2019.com) is the 33rd conference in a series of successful meetings where colleagues from this community can exchange knowledge, discuss the results of their recent research, and network with colleagues to form new collaborations.

Topics will cover fundamental and applied advances in the fields of dispersed systems, nanoparticles, self-assembly, and supramolecular systems, as well as wetting and liquid interfaces. In addition, advances in theory, simulation, and instrumentation, including new analytical techniques, will be discussed.

The topics include but are not limited to:

  • Polymer colloids;
  • Microgels and gels;
  • Polymers in solutionl
  • Rheology of surfactants and polymers;
  • Self-assembly of polymers;
  • Functionalization of surfaces with polymers;
  • Polymers in medicine and controlled release.

Prof. Dr. Erin Koos
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. Polymers 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 2700 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

  • Polymer colloids
  • Microgels and gels
  • Polymers in solution
  • Rheology of surfactants and polymers
  • Self-assembly of polymers
  • Functionalization of surfaces with polymers
  • Polymers in medicine and controlled release

Published Papers (4 papers)

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Research

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13 pages, 4840 KiB  
Article
The Inhibition Property and Mechanism of a Novel Low Molecular Weight Zwitterionic Copolymer for Improving Wellbore Stability
by Weichao Du, Michal Slaný, Xiangyun Wang, Gang Chen and Jie Zhang
Polymers 2020, 12(3), 708; https://0-doi-org.brum.beds.ac.uk/10.3390/polym12030708 - 23 Mar 2020
Cited by 78 | Viewed by 4795
Abstract
In this work, a novel low molecular weight zwitterionic copolymer for improving wellbore stability, which is expected to be an alternative to the current shale inhibitors, was obtained by copolymerization of tris hydroxyethyl allyl ammonium bromide (THAAB), 2-acrylamido-2- methyl propane sulfonic acid (AMPS) [...] Read more.
In this work, a novel low molecular weight zwitterionic copolymer for improving wellbore stability, which is expected to be an alternative to the current shale inhibitors, was obtained by copolymerization of tris hydroxyethyl allyl ammonium bromide (THAAB), 2-acrylamido-2- methyl propane sulfonic acid (AMPS) and acrylamide (AM), initiated by a redox initiation system in an aqueous solution. The copolymer, denoted as SX-1, was characterized by FT-IR, TGA-DSC, and GPC. Results demonstrated that the molecular weight of SX-1 was approximately 13,683 g/mol and it displayed temperature resistance up to 225 °C. Regarding the inhibition performance, evaluation experiments showed the hot rolling recovery of a Longmaxi shale sample in 2.0 wt % SX-1 solutions was up to 90.31% after hot rolling for 16 h at 120 °C. The Linear swelling height of Na-MMT artificial core in 2.0 wt % SX-1 solution was just 4.74 mm after 16 h. Methods including particle size analysis, FTIR, XRD, and SEM were utilized to study the inhibition mechanism of SX-1; results demonstrated that SX-1 had entered into the inner layer of sodium montmorillonite (Na-MMT) and adsorbed on the inner surface, and the micro-structure of Na-MMT was successfully changed by SX-1. The particle size of Na-MMT in distilled water was 8.05 μm, and it was observed that its size had increased to 603 μm after the addition of 2.0 wt % of SX-1. Its superior properties make this novel low molecular weight copolymer promising for ensuring wellbore stability, particularly for high temperature wells. Full article
(This article belongs to the Special Issue Colloid and Interface)
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14 pages, 2148 KiB  
Article
Design of Ultra-Thin PEO/PDMAEMA Polymer Coatings for Tunable Protein Adsorption
by Anna Bratek-Skicki
Polymers 2020, 12(3), 660; https://0-doi-org.brum.beds.ac.uk/10.3390/polym12030660 - 15 Mar 2020
Cited by 10 | Viewed by 3451
Abstract
Protein adsorption on solid surfaces provides either beneficial or adverse outcomes, depending on the application. Therefore, the desire to predict, control, and regulate protein adsorption on different surfaces is a major concern in the field of biomaterials. The most widely used surface modification [...] Read more.
Protein adsorption on solid surfaces provides either beneficial or adverse outcomes, depending on the application. Therefore, the desire to predict, control, and regulate protein adsorption on different surfaces is a major concern in the field of biomaterials. The most widely used surface modification approach to prevent or limit protein adsorption is based on the use of poly (ethylene oxide) (PEO). On the other hand, the amount of protein adsorbed on poly(2-(dimethylamine)ethyl methacrylate) (PDMAEMA) coatings can be regulated by the pH and ionic strength of the medium. In this work, ultra-thin PEO/PDMAEMA coatings were designed from solutions with different ratios of PEO to PDMAEMA, and different molar masses of PEO, to reversibly adsorb and desorb human serum albumin (HSA), human fibrinogen (Fb), lysozyme (Lys), and avidine (Av), four very different proteins in terms of size, shape, and isoelectric points. X-ray photoelectron spectroscopy (XPS), quartz crystal microbalance (QCM), and atomic force microscopy (AFM) were used to characterize the mixed polymer coatings, revealing the presence of both polymers in the layers, in variable proportions according to the chosen parameters. Protein adsorption at pH 7.4 and salt concentrations of 10−3 M was monitored by QCM. Lys and Av did not adsorb on the homo-coatings and the mixed coatings. The amount of HSA and Fb adsorbed decreased with increasing the PEO ratio or its molar mass in a grafting solution. It was demonstrated that HSA and Fb, which were adsorbed at pH 7.4 and at an ionic strength of 10−3 M, can be fully desorbed by rinsing with a sodium chloride solution at pH 9.0 and ionic strength 0.15 M from the mixed PEO5/PDMAEMA coatings with PEO/PDMAEMA mass ratios of 70/30, and 50/50, respectively. The results demonstrate that mixed PEO/PDMAEMA coatings allow protein adsorption to be finely tuned on solid surfaces. Full article
(This article belongs to the Special Issue Colloid and Interface)
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14 pages, 19473 KiB  
Article
Influence of Polymer Concentration and Nozzle Material on Centrifugal Fiber Spinning
by Jorgo Merchiers, Willem Meurs, Wim Deferme, Roos Peeters, Mieke Buntinx and Naveen K. Reddy
Polymers 2020, 12(3), 575; https://0-doi-org.brum.beds.ac.uk/10.3390/polym12030575 - 05 Mar 2020
Cited by 34 | Viewed by 4709
Abstract
Centrifugal fiber spinning has recently emerged as a highly promising alternative technique for the production of nonwoven, ultrafine fiber mats. Due to its high production rate, it could provide a more technologically relevant fiber spinning technique than electrospinning. In this contribution, we examine [...] Read more.
Centrifugal fiber spinning has recently emerged as a highly promising alternative technique for the production of nonwoven, ultrafine fiber mats. Due to its high production rate, it could provide a more technologically relevant fiber spinning technique than electrospinning. In this contribution, we examine the influence of polymer concentration and nozzle material on the centrifugal spinning process and the fiber morphology. We find that increasing the polymer concentration transforms the process from a beaded-fiber regime to a continuous-fiber regime. Furthermore, we find that not only fiber diameter is strongly concentration-dependent, but also the nozzle material plays a significant role, especially in the continuous-fiber regime. This was evaluated by the use of a polytetrafluoroethylene (PTFE) and an aluminum nozzle. We discuss the influence of polymer concentration on fiber morphology and show that the choice of nozzle material has a significant influence on the fiber diameter. Full article
(This article belongs to the Special Issue Colloid and Interface)
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Review

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20 pages, 4647 KiB  
Review
A Mini-Review on Anion Exchange and Chelating Polymers for Applications in Hydrometallurgy, Environmental Protection, and Biomedicine
by Piotr Cyganowski and Anna Dzimitrowicz
Polymers 2020, 12(4), 784; https://0-doi-org.brum.beds.ac.uk/10.3390/polym12040784 - 02 Apr 2020
Cited by 14 | Viewed by 3622
Abstract
The rapidly increasing demand for technologies aiming to resolve challenges of separations and environmental protection causes a sharp increase in the demand for ion exchange (IX) and chelating polymers. These unique materials can offer target-selective adsorption properties vital for the removal or recovery [...] Read more.
The rapidly increasing demand for technologies aiming to resolve challenges of separations and environmental protection causes a sharp increase in the demand for ion exchange (IX) and chelating polymers. These unique materials can offer target-selective adsorption properties vital for the removal or recovery of harmful and precious materials, where trace concentrations thereof make other techniques insufficient. Hence, recent achievements in syntheses of IX and chelating resins designed and developed in our research group are discussed within this mini-review. The aim of the present work is to reveal that, due to the diversified and unique physiochemical characteristics of the proposed materials, they are not limited to traditional separation techniques and could be used in multifunctional areas of applications, including catalysis, heat management, and biomedicine. Full article
(This article belongs to the Special Issue Colloid and Interface)
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