PDMS Curing Inhibition on 3D-Printed Molds: ...
Document type :
Article dans une revue scientifique: Article original
Title :
PDMS Curing Inhibition on 3D-Printed Molds: Why? Also, How to Avoid It?
Author(s) :
Venzac, Bastien [Auteur]
University of Twente
Deng, Shanliang [Auteur]
University of Twente
Mahmoud, Ziad [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Lenferink, Aufried [Auteur]
University of Twente
Costa, Aurélie [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Bray, Fabrice [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Otto, Cees [Auteur]
University of Twente
Rolando, Christian [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Le Gac, Séverine [Auteur]
University of Twente
University of Twente
Deng, Shanliang [Auteur]
University of Twente
Mahmoud, Ziad [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Lenferink, Aufried [Auteur]
University of Twente
Costa, Aurélie [Auteur]
Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Bray, Fabrice [Auteur]

Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Otto, Cees [Auteur]
University of Twente
Rolando, Christian [Auteur]

Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 [MSAP]
Le Gac, Séverine [Auteur]
University of Twente
Journal title :
Analytical Chemistry
Pages :
7180-7187
Publisher :
American Chemical Society
Publication date :
2021
ISSN :
0003-2700
HAL domain(s) :
Chimie/Polymères
Chimie/Chimie analytique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
Chimie/Chimie analytique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
English abstract : [en]
Three-dimensional (3D)-printing techniques such as stereolithography (SLA) are currently gaining momentum for the production of miniaturized analytical devices and molds for soft lithography. However, most commercially ...
Show more >Three-dimensional (3D)-printing techniques such as stereolithography (SLA) are currently gaining momentum for the production of miniaturized analytical devices and molds for soft lithography. However, most commercially available SLA resins inhibit polydimethylsiloxane (PDMS) curing, impeding reliable replication of the 3D-printed structures in this elastomeric material. Here, we report a systematic study, using 16 commercial resins, to identify a fast and straightforward treatment of 3D-printed structures and to support accurate PDMS replication using UV and/or thermal post-curing. In-depth analysis using Raman spectroscopy, nuclear magnetic resonance, and high-resolution mass spectrometry revealed that phosphine oxide-based photo-initiators, leaching out of the 3D-printed structures, are poisoning the Pt-based PDMS catalyst. Yet, upon UV and/or thermal treatments, photo-initiators were both eliminated and recombined into high molecular weight species that were sequestered in the moldsShow less >
Show more >Three-dimensional (3D)-printing techniques such as stereolithography (SLA) are currently gaining momentum for the production of miniaturized analytical devices and molds for soft lithography. However, most commercially available SLA resins inhibit polydimethylsiloxane (PDMS) curing, impeding reliable replication of the 3D-printed structures in this elastomeric material. Here, we report a systematic study, using 16 commercial resins, to identify a fast and straightforward treatment of 3D-printed structures and to support accurate PDMS replication using UV and/or thermal post-curing. In-depth analysis using Raman spectroscopy, nuclear magnetic resonance, and high-resolution mass spectrometry revealed that phosphine oxide-based photo-initiators, leaching out of the 3D-printed structures, are poisoning the Pt-based PDMS catalyst. Yet, upon UV and/or thermal treatments, photo-initiators were both eliminated and recombined into high molecular weight species that were sequestered in the moldsShow less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Source :
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