Publication detail

Anatase and rutile nanoparticles in photopolymer 3D-printed nanocomposites: Band gap-controlled electron interactions in free-radical and cationic photocuring

KORČUŠKOVÁ, M. SVATÍK, J. TOMAL, W. ŠIKYŇOVÁ, A. VISHAKHA, V. PETKO, F. GSALEK, M. STALMACH, P. ORTYL, J. LEPCIO, P.

Original Title

Anatase and rutile nanoparticles in photopolymer 3D-printed nanocomposites: Band gap-controlled electron interactions in free-radical and cationic photocuring

Type

journal article in Web of Science

Language

English

Original Abstract

The preparation of functional photopolymer nanocomposites is affected by both the physical and chemical interactions of nanoparticles (NPs) and polymer resin. Some NPs, such as semiconducting metal oxides, may contribute by their photocatalytic behavior and electron transfer, influencing the kinetics of the photopolymerization reaction. This study has investigated the complex effect of titanium dioxide (TiO 2 ) NPs in anatase and rutile form on the conversion, kinetics, and printability of free -radical and cationic photopolymerization resin. Two different polymorphs of TiO 2 NPs ensured identical chemical properties, but different physical effects related to their varying band gap energies and electron transfer efficiency. These parameters were found to be crucial for influencing the photopolymerization kinetics. While rutile showed a more pronounced enhancement of the free -radical photopolymerization ' s conversion and kinetics, cationic photopolymerization was favourably affected only by anatase NPs due to the photosensitization effect. These findings are critical in understanding and designing functional nanocomposite materials processed by vat photopolymerization 3D printing that could find use in optical, medical, or environmental applications.

Keywords

Photoinitiation; Titanium dioxide; electron transfer; Cyclic voltammetry; Conversion

Authors

KORČUŠKOVÁ, M.; SVATÍK, J.; TOMAL, W.; ŠIKYŇOVÁ, A.; VISHAKHA, V.; PETKO, F.; GSALEK, M.; STALMACH, P.; ORTYL, J.; LEPCIO, P.

Released

1. 7. 2024

Publisher

ELSEVIER

Location

AMSTERDAM

ISBN

1873-166X

Periodical

REACTIVE & FUNCTIONAL POLYMERS

Year of study

200

Number

105923

State

Kingdom of the Netherlands

Pages from

1

Pages to

12

Pages count

12

URL

https://www.sciencedirect.com/science/article/pii/S1381514824000981?via%3Dihub

BibTex

@article{BUT189994,
  author="KORČUŠKOVÁ, M. and SVATÍK, J. and TOMAL, W. and ŠIKYŇOVÁ, A. and VISHAKHA, V. and PETKO, F. and GSALEK, M. and STALMACH, P. and ORTYL, J. and LEPCIO, P.",
  title="Anatase and rutile nanoparticles in photopolymer 3D-printed nanocomposites: Band gap-controlled electron interactions in free-radical and cationic photocuring",
  journal="REACTIVE & FUNCTIONAL POLYMERS",
  year="2024",
  volume="200",
  number="105923",
  pages="1--12",
  doi="10.1016/j.reactfunctpolym.2024.105923",
  issn="1873-166X",
  url="https://www.sciencedirect.com/science/article/pii/S1381514824000981?via%3Dihub"
}