Increase of spatiotemporal resolution and reproducible layer thicknesses in cationic vat photopolymerization
In this paper, the 3D DLP printing of an epoxy-based material controlled by pyridine derivatives was investigated. The impact of the pyridine structure and concentration on the cationic polymerization kinetics was explored. An increase of the inhibition time and a decrease of the heat flow were obse...
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| Veröffentlicht in: | Polymer chemistry 2025-01, Vol.16 (2), p.126-132 |
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| container_title | Polymer chemistry |
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| creator | Goldbach, Emile Allonas, Xavier Ley, Christian Halbardier, Lucile Croutxé-Barghorn, Céline |
| description | In this paper, the 3D DLP printing of an epoxy-based material controlled by pyridine derivatives was investigated. The impact of the pyridine structure and concentration on the cationic polymerization kinetics was explored. An increase of the inhibition time and a decrease of the heat flow were observed and attributed to the trapping of the initiating species and the stabilization of the growing chains. This allows for the confinement of the polymerization process and limits the presence of lateral defects around the printed objects. Furthermore, the validity of the Jacobs law was discussed. Due to the photoinitiator photolysis, an increase in the penetration depth was observed in relation to the solidification delay. A model was developed to relate the change of the printed layer thickness to the applied light dose, taking this phenomenon into account. This led to a more precise determination of the critical energy. |
| doi_str_mv | 10.1039/D4PY01046A |
| format | Article |
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The impact of the pyridine structure and concentration on the cationic polymerization kinetics was explored. An increase of the inhibition time and a decrease of the heat flow were observed and attributed to the trapping of the initiating species and the stabilization of the growing chains. This allows for the confinement of the polymerization process and limits the presence of lateral defects around the printed objects. Furthermore, the validity of the Jacobs law was discussed. Due to the photoinitiator photolysis, an increase in the penetration depth was observed in relation to the solidification delay. A model was developed to relate the change of the printed layer thickness to the applied light dose, taking this phenomenon into account. 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The impact of the pyridine structure and concentration on the cationic polymerization kinetics was explored. An increase of the inhibition time and a decrease of the heat flow were observed and attributed to the trapping of the initiating species and the stabilization of the growing chains. This allows for the confinement of the polymerization process and limits the presence of lateral defects around the printed objects. Furthermore, the validity of the Jacobs law was discussed. Due to the photoinitiator photolysis, an increase in the penetration depth was observed in relation to the solidification delay. A model was developed to relate the change of the printed layer thickness to the applied light dose, taking this phenomenon into account. This led to a more precise determination of the critical energy.</description><subject>Cationic polymerization</subject><subject>Heat transmission</subject><subject>Penetration depth</subject><subject>Photoinitiators</subject><subject>Photolysis</subject><subject>Photopolymerization</subject><subject>Pyridines</subject><subject>Solidification</subject><subject>Thickness</subject><subject>Three dimensional flow</subject><issn>1759-9954</issn><issn>1759-9962</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2025</creationdate><recordtype>article</recordtype><recordid>eNpFUEtLAzEQDqJgqb34CwLehNW8Nrs5lvoqCHrQg6clzU5o6nazJlmh_npTKzqHeX7fzPAhdE7JFSVcXd-I5zdCiZDzIzShVakKpSQ7_stLcYpmMW5INk4F43KCumVvAugI2FscB52cT7AdfNAdDhB9N-ZOj3Xf5nIIvh2NW3WAO72DgNPamfceYoSIXY_Nnt47gz91wsPaJz_4breF4L5-JmfoxOouwuw3TtHr3e3L4qF4fLpfLuaPhaGiToVimlIhLCFsJSoN0iiQzFasEnzFVGW1sGVdgjKiNLWmTAlpNLQ1cGq1bPkUXRz25oc_Roip2fgx9Plkw2lJapYdz6jLA8oEH2MA2wzBbXXYNZQ0e0Gbf0H5NzXiaqE</recordid><startdate>20250102</startdate><enddate>20250102</enddate><creator>Goldbach, Emile</creator><creator>Allonas, Xavier</creator><creator>Ley, Christian</creator><creator>Halbardier, Lucile</creator><creator>Croutxé-Barghorn, Céline</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-2194-939X</orcidid><orcidid>https://orcid.org/0000-0002-4400-9096</orcidid><orcidid>https://orcid.org/0000-0001-7052-4692</orcidid></search><sort><creationdate>20250102</creationdate><title>Increase of spatiotemporal resolution and reproducible layer thicknesses in cationic vat photopolymerization</title><author>Goldbach, Emile ; Allonas, Xavier ; Ley, Christian ; Halbardier, Lucile ; Croutxé-Barghorn, Céline</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c148t-92a1144f002b47ae6c9e62f72743b297fa4f585e9c45c8a12946caed8e31fa6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2025</creationdate><topic>Cationic polymerization</topic><topic>Heat transmission</topic><topic>Penetration depth</topic><topic>Photoinitiators</topic><topic>Photolysis</topic><topic>Photopolymerization</topic><topic>Pyridines</topic><topic>Solidification</topic><topic>Thickness</topic><topic>Three dimensional flow</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Goldbach, Emile</creatorcontrib><creatorcontrib>Allonas, Xavier</creatorcontrib><creatorcontrib>Ley, Christian</creatorcontrib><creatorcontrib>Halbardier, Lucile</creatorcontrib><creatorcontrib>Croutxé-Barghorn, Céline</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Goldbach, Emile</au><au>Allonas, Xavier</au><au>Ley, Christian</au><au>Halbardier, Lucile</au><au>Croutxé-Barghorn, Céline</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Increase of spatiotemporal resolution and reproducible layer thicknesses in cationic vat photopolymerization</atitle><jtitle>Polymer chemistry</jtitle><date>2025-01-02</date><risdate>2025</risdate><volume>16</volume><issue>2</issue><spage>126</spage><epage>132</epage><pages>126-132</pages><issn>1759-9954</issn><eissn>1759-9962</eissn><abstract>In this paper, the 3D DLP printing of an epoxy-based material controlled by pyridine derivatives was investigated. The impact of the pyridine structure and concentration on the cationic polymerization kinetics was explored. An increase of the inhibition time and a decrease of the heat flow were observed and attributed to the trapping of the initiating species and the stabilization of the growing chains. This allows for the confinement of the polymerization process and limits the presence of lateral defects around the printed objects. Furthermore, the validity of the Jacobs law was discussed. Due to the photoinitiator photolysis, an increase in the penetration depth was observed in relation to the solidification delay. A model was developed to relate the change of the printed layer thickness to the applied light dose, taking this phenomenon into account. 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| fulltext | fulltext |
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| ispartof | Polymer chemistry, 2025-01, Vol.16 (2), p.126-132 |
| issn | 1759-9954 1759-9962 |
| language | eng |
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| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Cationic polymerization Heat transmission Penetration depth Photoinitiators Photolysis Photopolymerization Pyridines Solidification Thickness Three dimensional flow |
| title | Increase of spatiotemporal resolution and reproducible layer thicknesses in cationic vat photopolymerization |
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