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Surface Modification to Improve Properties of Material
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Surface Modification to Improve Properties of Material

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Materials Characterization".

Deadline for manuscript submissions: closed (10 August 2022) | Viewed by 6674

Special Issue Editor

Prof. Dr. Mozetic Miran

E-Mail Website
Guest Editor
Department of Surface Engineering, Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
Interests: surface engineering; non-equilibrium gaseous plasma; polymers; organic materials; plasma technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Surface properties of modern materials are usually inadequate so they should be modified prior to application or further processing such as coating with functional materials. Both morphological properties and chemical structure/composition should be modified in order to obtain a desired surface finish. Various treatment procedures have been employed, and many are based on the application of non-equilibrium gaseous media, especially gaseous plasma. Although such treatments have been studied extensively in recent decades, and even commercialized, the exact mechanism of interaction between reactive gaseous species and solid materials is still poorly understood. This Special Issue will provide recent trends in the nanostructuring and functionalization of solid materials with the goal of improving their functional properties such as biocompatibility.

It is my pleasure to invite you to submit a manuscript to this Special Issue. Full papers, communications, and reviews are all welcome. Critical reviews in specific modern topics such as biocompatibility of advanced polymers and polymer composites are particularly welcome. Authors are encouraged to submit manuscripts reporting unexpected results provided they can present scientifically spotless explanations.

Prof. Dr. Mozetic Miran
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. Materials 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 2600 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

  • surface properties
  • nanostructuring
  • functionalization
  • grafting

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Published Papers (3 papers)

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Research

20 pages, 6039 KiB  
Article
Synthesis and Characterization of α-Al2O3/Ba-β-Al2O3 Spheres for Cadmium Ions Removal from Aqueous Solutions
by Pamela Nair Silva-Holguín, Álvaro de Jesús Ruíz-Baltazar, Nahum Andrés Medellín-Castillo, Gladis Judith Labrada-Delgado and Simón Yobanny Reyes-López
Materials 2022, 15(19), 6809; https://doi.org/10.3390/ma15196809 - 30 Sep 2022
Cited by 2 | Viewed by 2126
Abstract
The search for adsorbent materials with a certain chemical inertness, mechanical resistance, and high adsorption capacity, as is the case with alumina, is carried out with structural or surface modifications with the addition of additives or metallic salts. This research shows the synthesis, [...] Read more.
The search for adsorbent materials with a certain chemical inertness, mechanical resistance, and high adsorption capacity, as is the case with alumina, is carried out with structural or surface modifications with the addition of additives or metallic salts. This research shows the synthesis, characterization, phase evolution and Cd(II) adsorbent capacity of α-Al2O3/Ba-β-Al2O3 spheres obtained from α-Al2O3 nanopowders by the ion encapsulation method. The formation of the Ba-β-Al2O3 phase is manifested at 1500 °C according to the infrared spectrum by the appearance of bands corresponding to AlO4 bonds and the appearance of peaks corresponding to Ba-O bonds in Raman spectroscopy. XRD determined the presence of BaO·Al2O3 at 1000 °C and the formation of Ba-β-Al2O3 at 1600 °C. Scanning electron microscopy revealed the presence of spherical grains corresponding to α-Al2O3 and hexagonal plates corresponding to β-Al2O3 in the spheres treated at 1600 °C. The spheres obtained have dimensions of 4.65 ± 0.30 mm in diameter, weight of 43 ± 2 mg and a surface area of 0.66 m2/g. According to the curve of pH vs. zeta potential, the spheres have an acid character and a negative surface charge of −30 mV at pH 5. Through adsorption studies, an adsorbent capacity of Cd(II) of 59.97 mg/g (87 ppm Cd(II)) was determined at pH 5, and the data were fitted to the pseudo first order, pseudo second order and Freundlich models, with correlation factors of 0.993, 0.987 and 0.998, respectively. Full article
(This article belongs to the Special Issue Surface Modification to Improve Properties of Material)
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11 pages, 2415 KiB  
Article
Effect of Various Surface Treatments on Wettability and Morphological Properties of Titanium Oxide Thin Films
by Ewelina Kuźmicz-Mirosław, Marcin Kuśmierz, Konrad Terpiłowski, Mateusz Śmietana, Mariusz Barczak and Magdalena Staniszewska
Materials 2022, 15(12), 4113; https://doi.org/10.3390/ma15124113 - 9 Jun 2022
Cited by 3 | Viewed by 1868
Abstract
The effect of three popular surface activation methods for a titanium oxide (titania) surface was thoroughly investigated to identify the most effective protocol for the enhancement of hydrophilicity. All the methods, namely H2O2 activation, UV irradiation and oxygen plasma treatment [...] Read more.
The effect of three popular surface activation methods for a titanium oxide (titania) surface was thoroughly investigated to identify the most effective protocol for the enhancement of hydrophilicity. All the methods, namely H2O2 activation, UV irradiation and oxygen plasma treatment resulted in an enhanced hydrophilic titania surface, which was evidenced by the reduced contact angle values. To study in detail the chemical and morphological features responsible for the increased hydrophilicity, the treated surfaces were submitted to inspection with atomic force microscopy and X-ray photoelectron spectroscopy. The correlation between the treatment and titania surface hydroxylation as well as hydrophilic behavior have been discussed. Full article
(This article belongs to the Special Issue Surface Modification to Improve Properties of Material)
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15 pages, 6446 KiB  
Article
Wettability and Adhesion of Polyethylene Powder Treated with Non-Equilibrium Various Gaseous Plasma in Semi-Industrial Equipment
by Hana Jelínek Šourková, Zuzana Weberová, Jakub Antoň and Petr Špatenka
Materials 2022, 15(2), 686; https://doi.org/10.3390/ma15020686 - 17 Jan 2022
Cited by 9 | Viewed by 2134
Abstract
Plasma treatment of polyethylene powder was carried out in low-pressure gaseous plasma sustained in a semi-industrial reactor powered with a microwave source, in which it was specifically worked with the residual atmosphere. Timed applications of plasma-treated powder in air atmosphere were carried out [...] Read more.
Plasma treatment of polyethylene powder was carried out in low-pressure gaseous plasma sustained in a semi-industrial reactor powered with a microwave source, in which it was specifically worked with the residual atmosphere. Timed applications of plasma-treated powder in air atmosphere were carried out to study their influence on the adhesion. Based on wettability and adhesion, a treatment time of 5 min was selected for the study of other working gases (nitrogen, oxygen, hydrogen, argon and a mixture of nitrogen and hydrogen). The measurements of wettability showed the highest adhesion increase for nitrogen. The highest increase of adhesion and of surface oxygen contain shown by oxygen treatment. By contrast, treatment with hydrogen resulted in increased roughness of the sintered surface of the powder. The selection of appropriate working gases which are not standard in industrial processes enables one to atypically regulate the adhesion or wettability. Full article
(This article belongs to the Special Issue Surface Modification to Improve Properties of Material)
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