Titre :

PDMS Curing Inhibition on 3D-Printed Molds: Why? Also, How to Avoid It?

Auteur(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

Titre de la revue :

Analytical Chemistry

Pagination :

7180-7187

Éditeur :

American Chemical Society

Date de publication :

2021

ISSN :

0003-2700

Discipline(s) HAL :

Chimie/Polymères
Chimie/Chimie analytique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique

Résumé en anglais : [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 ...
Lire la suite >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 moldsLire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Miniaturisation pour la Synthèse, l'Analyse et la Protéomique (MSAP) - USR 3290

Source :

Harvested from HAL