Cargando…

Interplay between Shelf Life and Printability of Silica-Filled Suspensions

Although fumed silica/siloxane suspensions are commonly employed in additive manufacturing technology, the interplay between shelf life, storage conditions, and printability has yet to be explored. In this work, direct ink writing (DIW) was used to print unique three-dimensional structures that requ...

Descripción completa

Detalles Bibliográficos
Autores principales: Torres, Xavier M., Stockdale, John R., Adhikari, Santosh, Legett, Shelbie A., Pacheco, Adam, Guajardo, Jesus A., Labouriau, Andrea
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10647575/
https://www.ncbi.nlm.nih.gov/pubmed/37960014
http://dx.doi.org/10.3390/polym15214334
_version_ 1785135139167141888
author Torres, Xavier M.
Stockdale, John R.
Adhikari, Santosh
Legett, Shelbie A.
Pacheco, Adam
Guajardo, Jesus A.
Labouriau, Andrea
author_facet Torres, Xavier M.
Stockdale, John R.
Adhikari, Santosh
Legett, Shelbie A.
Pacheco, Adam
Guajardo, Jesus A.
Labouriau, Andrea
author_sort Torres, Xavier M.
collection PubMed
description Although fumed silica/siloxane suspensions are commonly employed in additive manufacturing technology, the interplay between shelf life, storage conditions, and printability has yet to be explored. In this work, direct ink writing (DIW) was used to print unique three-dimensional structures that required suspensions to retain shape and form while being printed onto a substrate. Suspensions containing varying concentrations of hydrophobic and hydrophilic silica were formulated and evaluated over a time span of thirty days. Storage conditions included low (8%) and high (50%) relative humidity and temperatures ranging from 4 °C to 25 °C. The shelf life of the suspensions was examined by comparing the print quality of pristine and aged samples via rheology, optical microscopy, and mechanical testing. Results showed a significant decrease in printability over time for suspensions containing hydrophilic fumed silica, whereas the printability of suspensions containing hydrophobic fumed silica remained largely unchanged after storage. The findings in this work established the following recommendations for extending the shelf life and printability of suspensions commonly used in DIW technology: (1) higher fumed silica concentrations, (2) low humidity and low temperature storage environments, and (3) the use of hydrophobic fumed silica instead of hydrophilic fumed silica.
format Online
Article
Text
id pubmed-10647575
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-106475752023-11-06 Interplay between Shelf Life and Printability of Silica-Filled Suspensions Torres, Xavier M. Stockdale, John R. Adhikari, Santosh Legett, Shelbie A. Pacheco, Adam Guajardo, Jesus A. Labouriau, Andrea Polymers (Basel) Article Although fumed silica/siloxane suspensions are commonly employed in additive manufacturing technology, the interplay between shelf life, storage conditions, and printability has yet to be explored. In this work, direct ink writing (DIW) was used to print unique three-dimensional structures that required suspensions to retain shape and form while being printed onto a substrate. Suspensions containing varying concentrations of hydrophobic and hydrophilic silica were formulated and evaluated over a time span of thirty days. Storage conditions included low (8%) and high (50%) relative humidity and temperatures ranging from 4 °C to 25 °C. The shelf life of the suspensions was examined by comparing the print quality of pristine and aged samples via rheology, optical microscopy, and mechanical testing. Results showed a significant decrease in printability over time for suspensions containing hydrophilic fumed silica, whereas the printability of suspensions containing hydrophobic fumed silica remained largely unchanged after storage. The findings in this work established the following recommendations for extending the shelf life and printability of suspensions commonly used in DIW technology: (1) higher fumed silica concentrations, (2) low humidity and low temperature storage environments, and (3) the use of hydrophobic fumed silica instead of hydrophilic fumed silica. MDPI 2023-11-06 /pmc/articles/PMC10647575/ /pubmed/37960014 http://dx.doi.org/10.3390/polym15214334 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Torres, Xavier M.
Stockdale, John R.
Adhikari, Santosh
Legett, Shelbie A.
Pacheco, Adam
Guajardo, Jesus A.
Labouriau, Andrea
Interplay between Shelf Life and Printability of Silica-Filled Suspensions
title Interplay between Shelf Life and Printability of Silica-Filled Suspensions
title_full Interplay between Shelf Life and Printability of Silica-Filled Suspensions
title_fullStr Interplay between Shelf Life and Printability of Silica-Filled Suspensions
title_full_unstemmed Interplay between Shelf Life and Printability of Silica-Filled Suspensions
title_short Interplay between Shelf Life and Printability of Silica-Filled Suspensions
title_sort interplay between shelf life and printability of silica-filled suspensions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10647575/
https://www.ncbi.nlm.nih.gov/pubmed/37960014
http://dx.doi.org/10.3390/polym15214334
work_keys_str_mv AT torresxavierm interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions
AT stockdalejohnr interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions
AT adhikarisantosh interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions
AT legettshelbiea interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions
AT pachecoadam interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions
AT guajardojesusa interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions
AT labouriauandrea interplaybetweenshelflifeandprintabilityofsilicafilledsuspensions