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Polymers
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Functional Polymer Composites for Environmental Protection
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Functional Polymer Composites for Environmental Protection

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (15 August 2022) | Viewed by 5475

Special Issue Editors

Dr. Piotr Cyganowski

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Guest Editor
Department of Process Engineering and Technology of Polymer and Carbon Materials, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
Interests: ion exchange; polymer functionalization; noble metals; catalysis; nanoparticles
Dr. Anna Dzimitrowicz

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Guest Editor
Faculty of Chemistry, Division of Analytical Chemistry and Chemical Metallurgy, Wrocław University of Science and Technology, Wroclaw, Poland
Interests: cold atmospheric pressure plasmas (CAPPs); electrotechnics, glow discharge (GD); microbiology; nanomaterials; nanotechnology; plasma medicine; toxicity of nanomaterials; impact of nanomaterials on environment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dorota Jermakowicz-Bartkowiak

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Guest Editor
Department of Process Engineering and Technology of Polymer and Carbon Materials, Wroclaw University of Science and Technology, Wybrzeze St. Wyspianskiego 27, 50-370 Wroclaw, Poland
Interests: recovery of precious metals and rhenium Sorption processes; ion exchange resins; biodegradable and oxidegradable polymers; microwave-assisted preparation of ion exchange resins; microwave-assisted sorption of precious metals; metal nanoparticles; biosorbents

Special Issue Information

Dear colleagues,

The rapid global economic growth has created a series of ecological, social, and technological challenges that are related to the gradual dispersion of natural resources as well as to the increasingly difficult access to drinking water. In the face of climate change and the forced development of modern technologies that facilitate environmental protection and maintain or improve the current standard of living, these challenges will become more and more important.

These issues can be addressed by considering the potential of functional polymeric and composite materials. These materials can offer unique properties, depending on their composition, morphology, and functionalities they contain. In particular, different functional groups can provide ion exchange, chelating, catalytic, sensing, as well as reducing and stabilizing features, also enabling the fabrication of nanocomposite materials. These properties, useful in separation science and catalysis, include the possibilities of recovering transition group metals for the manufacturing of modern devices, removing contaminants that prevent the direct use of water, and facilitating the separation or decomposition of toxic pollutants discharged into the environment by various sectors of the chemical industry. In this context, polymers and composites can be recognized as highly versatile and tunable materials.

We would like to invite scientists to contribute to this Special Issue focused on functional materials for environmental protection. Research topics of interest include, but are not limited to, recent advances in the synthesis and/or application of polymers and (nano)composites designed for separation and catalysis, with emphasis on issues related to environmental protection and sustainable development. Both original articles and reviews are very welcome. 

Dr. Piotr Cyganowski
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

  • Functionalized resins
  • copolymer
  • nanocomposite
  • ion exchange
  • catalysis
  • separation

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Published Papers (3 papers)

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Research

14 pages, 3315 KiB  
Article
Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline
by Piotr Cyganowski, Anna Dzimitrowicz, Piotr Jamroz, Dorota Jermakowicz-Bartkowiak and Pawel Pohl
Polymers 2021, 13(21), 3796; https://doi.org/10.3390/polym13213796 - 2 Nov 2021
Cited by 6 | Viewed by 2166
Abstract
The present work presents a new nanocomposite catalyst with rhenium nanostructures (ReNSs) for the catalytic hydrogenation of 4-nitrophenol and 4-nitroaniline. The catalyst, based on an anion exchange resin with functionality derived from 1,1′-carboimidazole, was obtained in the process involving anion exchange of ReO [...] Read more.
The present work presents a new nanocomposite catalyst with rhenium nanostructures (ReNSs) for the catalytic hydrogenation of 4-nitrophenol and 4-nitroaniline. The catalyst, based on an anion exchange resin with functionality derived from 1,1′-carboimidazole, was obtained in the process involving anion exchange of ReO4– ions followed by their reduction with NaBH4. The amino functionality present in the resin played a primary role in the stabilization of the resultant ReNSs, consisting of ≈1% (w/w) Re in the polymer mass. The synthesized and capped ReNSs were amorphous and had the average size of 3.45 ± 1.85 nm. Then, the obtained catalyst was used in a catalytic reduction of 4-nitrophenol (4-NP) and 4-nitroaniline (4-NA). Following the pseudo-first-order kinetics, 5 mg of the catalyst led to a 90% conversion of 4-NP with the mass-normalized rate constant (km1) of 6.94 × 10−3 min−1 mg−1, while the corresponding value acquired for 4-NA was 7.2 × 10−3 min−1 mg−1, despite the trace amount of Re in the heterogenous catalyst. The obtained material was also conveniently reused. Full article
(This article belongs to the Special Issue Functional Polymer Composites for Environmental Protection)
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21 pages, 2856 KiB  
Article
Membrane Emulsification Process as a Method for Obtaining Molecularly Imprinted Polymers
by Joanna Wolska and Nasim Jalilnejad Falizi
Polymers 2021, 13(16), 2830; https://doi.org/10.3390/polym13162830 - 23 Aug 2021
Cited by 7 | Viewed by 2280
Abstract
The membrane emulsification process (ME) using a metallic membrane was the first stage for preparing a spherical and monodisperse thermoresponsive molecularly imprinted polymer (TSMIP). In the second step of the preparation, after the ME process, the emulsion of monomers was then polymerized. Additionally, [...] Read more.
The membrane emulsification process (ME) using a metallic membrane was the first stage for preparing a spherical and monodisperse thermoresponsive molecularly imprinted polymer (TSMIP). In the second step of the preparation, after the ME process, the emulsion of monomers was then polymerized. Additionally, the synthesized TSMIP was fabricated using as a functional monomer N-isopropylacrylamide, which is thermosensitive. This special type of polymer was obtained for the recognition and determination of trace bisphenol A (BPA) in aqueous media. Two types of molecularly imprinted polymers (MIPs) were synthesized using amounts of BPA of 5 wt.% (MIP-2) and 7 wt.% (MIP-1) in the reaction mixtures. Additionally, a non-imprinted polymer (NIP) was also synthesized. Polymer MIP-2 showed thermocontrolled recognition for imprinted molecules and a higher binding capacity than its corresponding non-imprinted polymer and higher than other molecularly imprinted polymer (MIP-1). The best condition for the sorption process was at a temperature of 35 °C, that is, at a temperature close to the phase transition value for poly(N-isopropylacrylamide). Under these conditions, the highest levels of BPA removal from water were achieved and the highest adsorption capacity of MIP-2 was about 0.5 mmol g−1 (about 114.1 mg g−1) and was approximately 20% higher than for MIP-1 and NIP. It was also observed that during the kinetic studies, under these temperature conditions, MIP-2 sorbed BPA faster and with greater efficiency than its non-imprinted analogue. Full article
(This article belongs to the Special Issue Functional Polymer Composites for Environmental Protection)
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11 pages, 4233 KiB  
Article
Facile Synthesis of Polyethylene Glycol@Tannin-Amine Microsphere towards Cr(VI) Removal
by Chengbing Yuan, Yan Zhang, Jinshui Yao, Qinze Liu and Fan-Gong Kong
Polymers 2021, 13(7), 1035; https://doi.org/10.3390/polym13071035 - 26 Mar 2021
Cited by 13 | Viewed by 2929
Abstract
Herein, a synthetic strategy for a rough microsphere Cr(VI)-adsorbent via the reaction of tannic acid (TA) and 1,6-hexanediamine (HA) and using polyethylene glycol (PEG) as surface modifier was presented. This adsorbent was characterized by a Fourier Transform Infrared spectrometer (FTIR), thermogravimetic analysis (TGA), [...] Read more.
Herein, a synthetic strategy for a rough microsphere Cr(VI)-adsorbent via the reaction of tannic acid (TA) and 1,6-hexanediamine (HA) and using polyethylene glycol (PEG) as surface modifier was presented. This adsorbent was characterized by a Fourier Transform Infrared spectrometer (FTIR), thermogravimetic analysis (TGA), X-ray photoelectron spectroscopy (XPS), etc. Certain factors, including contact time, PEG@poly(tannin-1,6-hexanediamine) (PEG@PTHA) dosage, initial concentration, and experimental temperature affecting the Cr(VI) adsorption performance of adsorbent were explored. PEG@PTHA can adsorb Cr and the Cr(VI) was reduced up to Cr(III) due to the existence of phenolic hydroxyl groups. Its adsorption capacity can reach up to 300 mg/g within 10 min and approximately 100% removal percentage below the initial concentration of 100 mg/L. Its behavior matched well with the Langmuir isotherm model and pseudo-second-order kinetic model. A PEG@PTHA adsorbent with maximum adsorption capacity (450 mg/g) has great prospects in Cr(VI)-sewage treatment. Full article
(This article belongs to the Special Issue Functional Polymer Composites for Environmental Protection)
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