Kinetics and Enhancing Strategies for Photopolymerization

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

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 4442

Special Issue Editors


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Guest Editor
Department of of Biomedical Imaging and Radiological Science, China Medical University, Taichung 40402, Taiwan
Interests: polymers; optimization; artificial intelligence; numerical analysis

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Guest Editor
New Vision, Inc., New Taipei City 242, Taiwan
Interests: photopolymerization; kinetic model; dynamic analysis

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Guest Editor
Centre National de la Recherche Scientifique (CNRS), Universite de Haute-Alsace (UHA), UMR 7361, IS2M, 15 Rue Jean Starcky, F-68057 Mulhouse, France
Interests: photopolymerization; photochemistry; polymers and lights; photoinitiators; 3D printing (stereolithography)
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Special Issue Information

Dear Colleagues,

Polymer science includes polymer physics, polymer chemistry, polymer synthesis, and polymer characterization etc. Photopolymerization plays one of the key roles for polymer industrial and medical applications, such as additive manufacturing (AM), 3D and 4D bio-printing, tissue engineering, and phototherapy. The basic and kinetics of photopolymerization is critical for improved efficacy, enhanced mechanical and/or functional properties, and the exploring of new methods and new materials. Various reported enhancing strategies for photopolymerization include the use of multiple initiators and/or monomers under light wavelength in the UV (365-405 nm) , visible (430-660 nm) and near-IR (750-980nm), such as : one component (monomer) and one-wavelength, two-component and one, two and three-wavelength and three-component, one-wavelength system. The synergetic effects lead to higher monomer conversion can be achieved by co-initiators extra radicals and multiple wavelengths for reduced oxygen-inhibition.  

The scope of this Special Issue includes (but are not limited to) both theoretical and experimental studies for the kinetics, synthesis, processing, and characterization of novel photopolymers for AM, 3D printing of structural and functional materials, polymerization induced phototherapy, and the use of light-responsive materials for tissue engineering.

Dr. Da-Chuan Cheng
Prof. Dr. Jui-Teng Lin
Prof. Dr. Jacques Lalevee
Guest Editors

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Keywords

  • kinetics of photochemistry
  • enhancing strategies for photopolymerization
  • synergetic kinetics of free radical and cationic photopolymerization
  • synthesis, process and characterization of novel photopolymers
  • polymer physical chemistry
  • light-controlled additive manufacturing
  • light-controlled 3D and 4D printing
  • light-responsive new materials

Published Papers (2 papers)

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Research

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8 pages, 610 KiB  
Article
Efficacy Analysis of In Situ Synthesis of Nanogold via Copper/Iodonium/Amine/Gold System under a Visible Light
by Jui-Teng Lin, Jacques Lalevee and Hsia-Wei Liu
Polymers 2021, 13(22), 4013; https://doi.org/10.3390/polym13224013 - 20 Nov 2021
Cited by 1 | Viewed by 1197
Abstract
This article presents, for the first time, the kinetics and the general features of a photopolymerization system (under visible light), copper-complex/Iodonium/triethylamine/gold-chloride (orA/B/N/G), with initial concentrations of A0, B0, N0 and G0, based on the proposed mechanism [...] Read more.
This article presents, for the first time, the kinetics and the general features of a photopolymerization system (under visible light), copper-complex/Iodonium/triethylamine/gold-chloride (orA/B/N/G), with initial concentrations of A0, B0, N0 and G0, based on the proposed mechanism of Tar et al. Analytic formulas were developed to explore the new features, including: (i) both free radical photopolymerization (FRP) efficacy and the production of nanogold (NG), which are proportional to the relative concentration ratios of (A0 + B0 + N0)/G0 and may be optimized for maximum efficacy; (ii) the two competing procedures of NG production and the efficacy of FRP, which can be tailored for an optimal system with nanogold in the polymer matrix; (iii) the FRP efficacy, which is contributed by three components given by the excited state of copper complex (T), and the radicals (R and S) produced by iodonium and amine, respectively; (iv) NG production, which is contributed by the coupling of T and radical (S) with gold ion; and (v) NG production, which has a transient state proportional to the light intensity and the concentration ratio A0/G0) + (N0/(K’M0), but also a steady-state independent of the light intensity. Full article
(This article belongs to the Special Issue Kinetics and Enhancing Strategies for Photopolymerization)
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Review

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24 pages, 9007 KiB  
Review
A Critical Review for Synergic Kinetics and Strategies for Enhanced Photopolymerizations for 3D-Printing and Additive Manufacturing
by Jui-Teng Lin, Jacques Lalevee and Da-Chun Cheng
Polymers 2021, 13(14), 2325; https://doi.org/10.3390/polym13142325 - 15 Jul 2021
Cited by 14 | Viewed by 2635
Abstract
The synergic features and enhancing strategies for various photopolymerization systems are reviewed by kinetic schemes and the associated measurements. The important topics include (i) photo crosslinking of corneas for the treatment of corneal diseases using UVA-light (365 nm) light and riboflavin as the [...] Read more.
The synergic features and enhancing strategies for various photopolymerization systems are reviewed by kinetic schemes and the associated measurements. The important topics include (i) photo crosslinking of corneas for the treatment of corneal diseases using UVA-light (365 nm) light and riboflavin as the photosensitizer; (ii) synergic effects by a dual-function enhancer in a three-initiator system; (iii) synergic effects by a three-initiator C/B/A system, with electron-transfer and oxygen-mediated energy-transfer pathways; (iv) copper-complex (G1) photoredox catalyst in G1/Iod/NVK systems for free radical (FRP) and cationic photopolymerization (CP); (v) radical-mediated thiol-ene (TE) photopolymerizations; (vi) superbase photogenerator based-catalyzed thiol−acrylate Michael (TM) addition reaction; and the combined system of TE and TM using dual wavelength; (vii) dual-wavelength (UV and blue) controlled photopolymerization confinement (PC); (viii) dual-wavelength (UV and red) selectively controlled 3D printing; and (ix) three-wavelength selectively controlled in 3D printing and additive manufacturing (AM). With minimum mathematics, we present (for the first time) the synergic features and enhancing strategies for various systems of multi-components, initiators, monomers, and under one-, two-, and three-wavelength light. Therefore, this review provides not only the bridging between modeling and measurements, but also guidance for further experimental studies and new applications in 3D printings and additive manufacturing (AM), based on the innovative concepts (kinetics/schemes). Full article
(This article belongs to the Special Issue Kinetics and Enhancing Strategies for Photopolymerization)
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