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Polymers
Special Issues
Surface Modification for Biopolymer Composites
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Surface Modification for Biopolymer Composites

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (20 November 2022) | Viewed by 4202

Special Issue Editors

Prof. Dr. Jen-Chang Yang

E-Mail Website
Guest Editor
Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11052, Taiwan
Interests: medical devcies; dental materials; biomimetics; hydrogels; silk proteins.
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Pei-Wen Peng

E-Mail Website
Guest Editor
School of Dental Technology, Taipei Medical University, Taipei 11031, Taiwan
Interests: biomaterial; surface modification; computer-aided engineering
Prof. Dr. Wei-Fang Lee

E-Mail Website
Guest Editor
School of Dental Technology, Taipei Medical University, Taipei 11031, Taiwan
Interests: dental ceramics; surface modification; dental technology

Special Issue Information

Dear Colleagues,

Biopolymers and composites are widely applied in numerous biomedical fields, such as dental and medical, tissue engineering, and regenerative medicine applications. Biopolymer composites should provide mechanical, thermal, and other kinds of properties to meet the requirements of each aspect of medical devices. However, the surface of these materials requires further modification to improve their biocompatibility in vivo. Hence, there are multiple methods of surface treatment that can be used to enhance the performance characteristics of device components.

This Special Issue focuses on leading developments of biopolymer composites with predetermined properties, including, but not limited to, antibacterial or cytotoxic properties using laser, ion implantation, plasma, and grafting. Papers that introduce new elements (e.g., nanoparticle, graphene, or others) to the surface layers of a polymer substrate with various techniques to induce changes in their physicochemical properties, morphology, chemical composition, and biocompatibility are very suitable for this Special Issue. This collection also aims to cover different emerging fabrication techniques and newly developed materials in combination with enhanced surface modification techniques.

Both research and review papers are welcome.

Prof. Dr. Jen-Chang Yang
Prof. Dr. Pei-Wen Peng
Prof. Dr. Wei-Fang Lee
Guest Editors

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

  • surface treatment
  • biopolymer composites
  • plasma
  • laser
  • grafting
  • nanoparticle

Published Papers (2 papers)

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Research

12 pages, 5988 KiB  
Article
Characterization and Antibacterial Properties of Polyetherketoneketone Coated with a Silver Nanoparticle-in-Epoxy Lining
by Wei-Fang Lee, Lu-Ying Wang, Ting-Yi Renn, Jen-Chang Yang, Lih-Sheng Fang, Yi-Huan Lee and Pei-Wen Peng
Polymers 2022, 14(14), 2906; https://doi.org/10.3390/polym14142906 - 17 Jul 2022
Cited by 7 | Viewed by 1637
Abstract
Polyetherketoneketone (PEKK) is an alternative material for use in removable partial denture frameworks; these frameworks must exhibit antibacterial properties to reduce the risk of periodontal disease. In the present study, silver nanoparticles (AgNPs) were synthesized via the reduction of silver nitrate with sodium [...] Read more.
Polyetherketoneketone (PEKK) is an alternative material for use in removable partial denture frameworks; these frameworks must exhibit antibacterial properties to reduce the risk of periodontal disease. In the present study, silver nanoparticles (AgNPs) were synthesized via the reduction of silver nitrate with sodium borohydride in a solution containing polyvinyl pyrrolidone (PVP). Transmission electron microscope images and dynamic light scattering confirmed that metallic nanoparticles had been created with an average size of 32 nm. Furthermore, the coating of the PEKK polymeric substrate with 0.5% AgNPs was carried out using an epoxy resin lining at room temperature. Fourier transform infrared (FTIR) spectra confirmed the successful transfer of the AgNP-in-resin lining onto the polymeric substrate. Scanning electron microscopy and atomic force microscopy confirmed that the AgNPs had been uniformly deposited onto the PEKK specimens. Finally, the antibacterial activity of the specimens was tested against Porphyromonas gingivalis. An inhibition zone of 22.5 mm and an antibacterial rate of 83.47% were found for the PEKK coated with 0.5% AgNPs (0.5% Ag-PEKK) compared to an untreated polyetheretherketone (PEEK) substrate, evidencing that 0.5% Ag-PEKK has potential antibacterial properties for implant applications. Full article
(This article belongs to the Special Issue Surface Modification for Biopolymer Composites)
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10 pages, 1740 KiB  
Article
Evaluating the Effect of Different Polymer and Composite Abutments on the Color Accuracy of Multilayer Pre-Colored Zirconia Polycrystal Dental Prosthesis
by Wen-Chieh Hsu, Tzu-Yu Peng, Chien-Ming Kang, Fan-Yi Chao, Jian-Hong Yu and Su-Feng Chen
Polymers 2022, 14(12), 2325; https://doi.org/10.3390/polym14122325 - 08 Jun 2022
Cited by 6 | Viewed by 2149
Abstract
With increasing aesthetic awareness and emphasis on time costs in today’s society, monolithic multilayer precolored zirconia ceramics (M-Zr) facilitate aesthetic restorations in a convenient and straightforward manner without the need for veneering porcelain to modify the color. However, the effect of abutment materials [...] Read more.
With increasing aesthetic awareness and emphasis on time costs in today’s society, monolithic multilayer precolored zirconia ceramics (M-Zr) facilitate aesthetic restorations in a convenient and straightforward manner without the need for veneering porcelain to modify the color. However, the effect of abutment materials on the final color of M-Zr remains unclear. Herein, we placed Vita A1 Shade M-Zr on six different abutment materials, zirconia (Y-TZP), 3D printed composite resin (CR), dental model resin (MR), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), and cobalt–chromium alloy (Co–Cr), to evaluate their effect on the color accuracy of M-Zr. The color attributes (L*, a*, and b*) were measured using a dental spectrophotometer. The translucency parameter (TP), contrast ratio, color difference (ΔE) between each background substrate and the Vita A1 Shade Guide, and chroma values (C) were calculated to evaluate the color accuracy of M-Zr. A statistical analysis was performed using one-way analysis of variance and post hoc Tukey’s HSD tests (α = 0.05). The experimental results indicate that the TP values and contrast ratio of the M-Zr samples were 14.85 and 0.83, respectively. Co–Cr had the highest ΔE (6.08) and lowest C value (7.52); PEKK had the lowest ΔE (2.60), and PEEK had the highest C value (12.23) (p < 0.05). Notably, the ΔE values of CR (3.13), PEEK (2.86), and PEKK were within clinical indicators (ΔE < 3.7). Based on these results, it can be concluded that the abutment material has a significant effect on the final color of the M-Zr, and PEEK or PEKK resulted in good color accuracy. When choosing the dental MR, traditional zirconia, or metals as abutment materials, colored or opaque cement might be required to eliminate color distortion and achieve desirable optical properties. Full article
(This article belongs to the Special Issue Surface Modification for Biopolymer Composites)
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