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Polymers
Special Issues
Advances in Photocurable Resins and Elastomers
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Advances in Photocurable Resins and Elastomers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: closed (10 October 2022) | Viewed by 2177

Special Issue Editors

Prof. Dr. Wolfgang Kern

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Guest Editor
Montanuniversitat Leoben, Department of Chemistry of Polymeric Materials, Leoben, Austria
Interests: special and functional polymers polymer photochemistry; surface modification of polymers; chemistry at interfaces of inorganic/organic materials; organic functionalization of inorganic surfaces and particles
Prof. Dr. Gisbert Rieß

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Guest Editor
Montanuniversitat Leoben, Leoben, Austria
Interests: polymer chemistry; barrier properties; flame-retardant polymers; polymeric foam
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Elisabeth Rossegger

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Guest Editor
Polymer Competence Center Leoben, A-8700 Leoben, Austria
Interests: chemistry of functional polymers; photopolymer; 3D printing

Special Issue Information

Dear Colleagues,

Many resins and elastomers can be cured by exposure to visible or ultraviolet light. Today, this technique is widely used for many commercially available materials as well as for new polymeric materials on an academic level, which can find practical applications in the future. Photocurable polymeric materials are found in many applications, such as coatings, printing inks, holographic imaging, photoresist technology, stereolithography, and dental composites.

Therefore, this Special Issue of Polymers addresses the development of new photocurable monomers/oligomers for resins and elastomers, and the design of novel photoinitiators. Advances in the application of photopolymerization are also welcome. Additional topics are the physical and chemical properties of the created materials, their thermal, mechanical, and optical features, as well as advanced applications of these materials. Original research articles, reviews, and short communications are welcome.

Prof. Dr. Wolfgang Kern
Prof. Dr. Gisbert Rieß 
Prof. Dr. Elisabeth Rossegger
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

  • photopolymerization
  • curing kinetics
  • resin
  • elastomer
  • photoinitiator
  • applications of photopolymers

Published Papers (1 paper)

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Research

11 pages, 2685 KiB  
Article
Photo-Curing Kinetics of 3D-Printing Photo-Inks Based on Urethane-Acrylates
by Hadi Bakhshi, Guanxing Kuang, Franziska Wieland and Wolfdietrich Meyer
Polymers 2022, 14(15), 2974; https://0-doi-org.brum.beds.ac.uk/10.3390/polym14152974 - 22 Jul 2022
Cited by 7 | Viewed by 1714
Abstract
In this study, photo-curing kinetics for urethane-acrylate-based photo-inks for 3D printing were evaluated using a photo-differential scanning calorimetry analysis. Initially, the photopolymerization kinetics of di- and monofunctional monomers were separately studied at different temperatures (5–85 °C). Later, the photo-curing kinetics and mechanical properties [...] Read more.
In this study, photo-curing kinetics for urethane-acrylate-based photo-inks for 3D printing were evaluated using a photo-differential scanning calorimetry analysis. Initially, the photopolymerization kinetics of di- and monofunctional monomers were separately studied at different temperatures (5–85 °C). Later, the photo-curing kinetics and mechanical properties of photo-inks based on different monomer mixtures (40/60–20/80) were evaluated. The results showed that urethane-dimethacrylate (UrDMA) and urethane-acrylate (UrA) had no light absorption in the region of 280–700 nm, making them a proper crosslinker and a reactive diluent, respectively, for the formulation of 3D-printing photo-inks. The kinetics investigations showed a temperature dependency for the photo-curing of UrDMA, where a higher photopolymerization rate (Rp,max: from 5.25 × 10−2 to 8.42 × 10−2 1/s) and double-bound conversion (DBCtotal: from 63.8% to 92.2%) were observed at elevated temperatures (5–85 °C), while the photo-curing of UrA was independent of the temperature (25–85 °C). Enhancing the UrA content from 60% to 80% in the UrDMA/UrA mixtures initially increased and later decreased the photopolymerization rate and conversion, where the mixtures of 30/70 and 25/75 presented the highest values. Meanwhile, increasing the UrA content led to lower glass transition temperatures (Tg) and mechanical strength for the photo-cured samples, where the mixture of 30/70 presented the highest maximum elongation (εmax: 73%). Full article
(This article belongs to the Special Issue Advances in Photocurable Resins and Elastomers)
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