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Polymers
Special Issues
Polymer Thin Films and Coatings
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Polymer Thin Films and Coatings

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

Deadline for manuscript submissions: closed (10 September 2022)

Special Issue Editor

Dr. Zhenpeng Li

E-Mail Website
Guest Editor
Department of Macromolecular Science and Engineering, Center for Layered Polymeric Systems (CLiPS), Case Western Reserve University, Cleveland, Ohio, USA
Interests: Polymer science and technology; multilayer co-extrsuion; Nano-carbon materials; Structure-property relationship

Special Issue Information

It is my pleasure to introduce our Special Issue, titled “Polymer Thin Films and Coatings”. Polymer materials consisting of macromolecules can be formed into ultra-thin subjects, either as stand-alone films or coating layers attaching to a substrate. Polymers in such thin thickness when approaching the scale of macromolecules (~10 nm) can exhibit distinct behaviour from the bulk form due to the confinement of the macromolecules. These can involve enhanced mechanical, optical, barrier, surface, and many other properties. Given these advantages, polymer thin films have been utilized in almost every application area, such as flexible and light media and coatings for surface modification and functionality. In recent years, multilayer thin films and coatings consisting of multiple polymers have been developed with the processing technology advancing involving co-extrusion, layer-by-layer deposition, and others. These multilayer films and coatings, when compared to monolithic, have enhanced and unique characteristics.

Recent technology advancements, involving energy storage, nano-technology, and sustainability, inspired massive development of polymer thin films and coatings. This Special Issue will focus on the most recent progress of the fundamental study, formulation development, and technology advancement of polymer thin films and coatings for the frontier application areas. These applications of interest can include, but are not be limited to, food/pharmaceutical packaging, advanced optics, information storage, flexible electronic devices, photovoltaic films, capacitor films, drug delivery, membranes for filtration, Li-ion battery electrodes and separators, antifouling coatings, hydrophobic/icephobic coatings nanocomposite films/coatings, and many others. The processing advancement of interest can include, but is not limited to, co-extrusion, over-moulding, wet coating, dry/powder coating, layer-by-layer deposition, nano-technology, polymer thin film recycling, etc.

Dr. Zhenpeng Li
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

  • packaging films
  • flexible electronic devices
  • energy storage
  • li-ion battery
  • functional coatings
  • nanocomposite films/coatings
  • layer-by-layer deposition
  • dry/powder coating
  • multilayer co-extrusion
  • polymer thin film recycling

Published Papers (2 papers)

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Research

17 pages, 3757 KiB  
Article
Oriented Tapes of Incompatible Polymers Using a Novel Multiplication Co-Extrusion Process
by Xinting Wang, Erik J. Price, Gary E. Wnek, Andrew Olah and Eric Baer
Polymers 2022, 14(18), 3872; https://doi.org/10.3390/polym14183872 - 16 Sep 2022
Viewed by 1699
Abstract
Continuous tapes of polypropylene (PP) and high-density polyethylene (HDPE) were produced using a novel multiplication co-extrusion process. The structure of the PP/HDPE tapes consists of co-continuous PP and HDPE domains aligned in the extrusion direction, forming a fiber-like composite structure with individual domain [...] Read more.
Continuous tapes of polypropylene (PP) and high-density polyethylene (HDPE) were produced using a novel multiplication co-extrusion process. The structure of the PP/HDPE tapes consists of co-continuous PP and HDPE domains aligned in the extrusion direction, forming a fiber-like composite structure with individual domain thicknesses of 200–500 nm. This unique structure created a significantly large contact interface between the polymer domains. AFM images suggest strong interfacial interactions between incompatible PP and HDPE domains. Orientation at 130 °C was possible due to the enhanced adhesion arising from epitaxial crystallization and the large interfacial area. The modulus, tensile strength, and orientation factor of the oriented composite tapes increased as the draw ratio increased. The existence of two independent shish kabab-like morphologies in the oriented tapes at different draw ratios was indicated by the appearance of two melting peaks for each material. After one-step orientation at 130 °C to a draw ratio of 25, the moduli of the oriented tapes increased to approximately 10 GPa, and the tensile strength increased to approximately 540 MPa. These oriented tapes are stiffer and stronger than commercial tapes and do not fibrillate during the orientation process indicating some interfacial interaction between the domains. Full article
(This article belongs to the Special Issue Polymer Thin Films and Coatings)
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16 pages, 6078 KiB  
Article
Preparation and Characterization of Graphene Oxide/Polyaniline/Polydopamine Nanocomposites towards Long-Term Anticorrosive Performance of Epoxy Coatings
by Yunyun Huang, Borui Zhang, Jian Wu, Ruoyu Hong and Jinjia Xu
Polymers 2022, 14(16), 3355; https://doi.org/10.3390/polym14163355 - 17 Aug 2022
Cited by 10 | Viewed by 2739
Abstract
To address the challenging issues of metal materials corrosion in industries, which has caused huge economic losses and security threats to many facilities in marine environments, functional polymer coatings have been widely used and regarded as one of the simplest and most effective [...] Read more.
To address the challenging issues of metal materials corrosion in industries, which has caused huge economic losses and security threats to many facilities in marine environments, functional polymer coatings have been widely used and regarded as one of the simplest and most effective methods to prevent such an undesirable event. In this study, a new type of coating filler consisting of graphene oxide/polyaniline/polydopamine (GO-PANI-PDA) nanocomposites has been successfully synthesized. The morphology, structure, composition, and corrosion resistance performance of the GO-PANI-PDA (GPP) nanocomposites were investigated via a series of characterization methods. The results from our electrochemical impedance spectroscopy, potentiodynamic polarization curve and salt spray experiment showed that the best corrosion resistance performance of the coating is from GPP 21 with the epoxy/GO-PANI:PDA ratio of 2:1, which exhibited a positive corrosion potential (−0.51 V) shift from epoxy/GO-PANI coating (−0.64 V). The corrosion current density (3.83 × 10−8 A/cm2) of GPP 21 is nearly an order of magnitude lower than that of epoxy/GO-PANI (7.05 × 10−7 A/cm2). The good anti-corrosion performance was fascinatingly observed in salt spray tests even without obvious corrosion phenomenon after 30 days of testing. Due to these remarkable properties, GPP nanocomposites can be an outstanding candidate for the rapid development of broadband shielding and anticorrosive materials. Full article
(This article belongs to the Special Issue Polymer Thin Films and Coatings)
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