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Nanomaterials
Special Issues
Fabrication of Nanoporous Polymer Films and Applications
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Fabrication of Nanoporous Polymer Films and Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Thin Films and 2D Materials".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 5285

Special Issue Editor

Prof. Dr. Do Sung Huh

E-Mail Website
Guest Editor
Department of Chemistry and Nanoscience and Engineering, Inje University, Obang 607, Gimhae City, Kyungnam, Republic of Korea
Interests: fabrication of nano-patterned polymer films; moth-eye patterned films; synthesis and characterization of conducting polymer composites; biomimetic materials; preparation of honeycomb-patterned polymer films and hydrogels

Special Issue Information

Dear Colleagues,

Porous polymer films with the pore size of nano- and micro- have attracted considerable attention because of their potential applications in various fields, such as cell culture or cell inhibition, optoelectronics, electro-catalysis, super hydrophobic surface, surface-enhanced Raman scattering substrates, photo-catalysis, and templates for material filling. Numerous methods such as solution casting and lithography can be used to fabricate porous polymer films. Nanomaterials have shown breakthrough performance and potential for these applications due to nanoscale surface morphology and quantum confinement effects, which enable their chemical reactivity and selectivity, catalytic behavior, and light-driven properties.

With the nanomaterial prospective for our global energy and sustainability challenges using porous polymer films, this Special Issue focuses on nanomaterials and nanocatalysts for various application, including:

  1. Fabrication of nano- or microporous polymer films;
  2. Biomedical applications of the porous polymer films;
  3. Nanomaterials of the porous films for optoelectronic field;
  4. Application of the materials for solar energy;
  5. Materials for batteries.

We invite authors to contribute original research and communication articles or comprehensive review articles covering the most recent progress and new developments in the design and utilization of nanomaterials for these catalytic, energy storage, and biological processes, which are relevant to applications for renewable energy and sustainability.

Prof. Dr. Do Sung Huh
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 2900 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.

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Published Papers (3 papers)

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Research

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18 pages, 34681 KiB  
Article
Effect of Fabrication Method on the Thermo Mechanical and Electrical Properties of Graphene Doped PVDF Nanocomposites
by Mamdouh A. Al-Harthi and Manwar Hussain
Nanomaterials 2022, 12(13), 2315; https://doi.org/10.3390/nano12132315 - 5 Jul 2022
Viewed by 2090
Abstract
Nanocomposites of poly (vinylidene fluoride) PVDF with graphene nanoflakes (GNF) were prepared using two different routes. Initially, a mix-melting method was used to prepare composites, and their thermal and mechanical properties were evaluated to choose the better method for future experiment and properties [...] Read more.
Nanocomposites of poly (vinylidene fluoride) PVDF with graphene nanoflakes (GNF) were prepared using two different routes. Initially, a mix-melting method was used to prepare composites, and their thermal and mechanical properties were evaluated to choose the better method for future experiment and properties investigation. Then, nanocomposite films were prepared by a simple solution-casting technique using a PVDF/graphene solution. In both cases, the amount of graphene was varied to observe and to compare their thermal and mechanical properties. The addition of graphene to the PVDF matrix resulted in changes in the crystallization and melting behaviors as confirmed by DSC analyses. Increasing the graphene content led to improved thermal stability of the PVDF nanocomposites prepared using both methods. Improvements in mechanical properties by the addition of graphene were also observed. Better performance was observed by the nanocomposites prepared by a mix-melting technique suggesting better dispersion and strong interface bonding between PVDF and graphene particles. Thermal and electrical conductivity were measured and compared. Microstructure and morphology were characterized using FTIR, XRD, and SEM analyses. Full article
(This article belongs to the Special Issue Fabrication of Nanoporous Polymer Films and Applications)
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18 pages, 5524 KiB  
Article
Antibacterial Activity of Polyaniline Coated in the Patterned Film Depending on the Surface Morphology and Acidic Dopant
by Shahkar Falak, Bo Kyoung Shin and Do Sung Huh
Nanomaterials 2022, 12(7), 1085; https://doi.org/10.3390/nano12071085 - 25 Mar 2022
Cited by 9 | Viewed by 2580
Abstract
We have fabricated poly(ε-caprolactone) (PCL) films with flat and honeycomb-patterned (HCP) structures to coat polyaniline (PANI) on the film surface. In addition, the effect of chemical modification of PANI by sulfuric acid (H2SO4) was also studied for antibacterial activity. [...] Read more.
We have fabricated poly(ε-caprolactone) (PCL) films with flat and honeycomb-patterned (HCP) structures to coat polyaniline (PANI) on the film surface. In addition, the effect of chemical modification of PANI by sulfuric acid (H2SO4) was also studied for antibacterial activity. The flat and HCP PCL films were obtained by simple evaporation of the solvent and via the breath figure (BF) method, respectively. The morphology and chemical composition of PANI coated on the film surface were evaluated by scanning electron microscopy (SEM) and X-ray spectroscopy (EDX). Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analyses (TGA) were obtained to identify the PANI coating. The wettability and conductivity of the films were also measured. Applicational aspects were evaluated by assessing antibacterial and antibiofilm activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The EDX, TGA, and FT-IR findings indicated chemical modification of PCL film by PANI and H2SO4. The conductivity of the films was increased by the coating of PANI to the patterned surface and additionally increased by the chemically modified PANI. The antibacterial activity was 69.79%, 78.27%, and 88% against E. coli, and 32.73%, 62.65%, and 87.97% against S. aureus, for flat PANI, HCP PANI, and H2SO4-treated HCP films, respectively. Likewise, the PANI coated flat, HCP, and H2SO4-treated HCP films inhibited E. coli biofilm formation by around 41.62%, 63%, and 83.88% and S. aureus biofilm formation by 17.81%, 69.83%, and 96.57%, respectively. The antibacterial activity of the HCP film was higher than that of flat PANI films, probably due to the higher coating of PANI on the HCP surface. Moreover, sulfonation of the HCP film with H2SO4 might have improved the wettability, thereby enhancing the antibacterial and antibiofilm properties. Our results showed that topographical changes, as well as doping, offer simple and cost-effective ways to modify the structural and functional properties of films. Full article
(This article belongs to the Special Issue Fabrication of Nanoporous Polymer Films and Applications)
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Review

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24 pages, 10863 KiB  
Review
Modified Breath Figure Methods for the Pore-Selective Functionalization of Honeycomb-Patterned Porous Polymer Films
by Shahkar Falak, Bokyoung Shin and Dosung Huh
Nanomaterials 2022, 12(7), 1055; https://doi.org/10.3390/nano12071055 - 24 Mar 2022
Cited by 10 | Viewed by 3530
Abstract
Recent developments in the field of the breath figure (BF) method have led to renewed interest from researchers in the pore-selective functionalization of honeycomb-patterned (HCP) films. The pore-selective functionalization of the HCP film gives unique properties to the film which can be used [...] Read more.
Recent developments in the field of the breath figure (BF) method have led to renewed interest from researchers in the pore-selective functionalization of honeycomb-patterned (HCP) films. The pore-selective functionalization of the HCP film gives unique properties to the film which can be used for specific applications such as protein recognition, catalysis, selective cell culturing, and drug delivery. There are several comprehensive reviews available for the pore-selective functionalization by the self-assembly process. However, considerable progress in preparation technologies and incorporation of new materials inside the pore surface for exact applications have emerged, thus warranting a review. In this review, we have focused on the pore-selective functionalization of the HCP films by the modified BF method, in which the self-assembly process is accompanied by an interfacial reaction. We review the importance of pore-selective functionalization, its applications, present limitations, and future perspectives. Full article
(This article belongs to the Special Issue Fabrication of Nanoporous Polymer Films and Applications)
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