Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization
A silsesquioxane bearing methacrylate and amine groups was synthesized by reacting half of the NH groups of N-[3-(trimethoxysilyl)-propyl]ethylene diamine with glycidyl methacrylate, followed by the hydrolytic condensation of methoxysilane groups. This led to a water-soluble silsesquioxane functiona...
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2008
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00323861_v49_n17_p3648_Gomez http://hdl.handle.net/20.500.12110/paper_00323861_v49_n17_p3648_Gomez |
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paper:paper_00323861_v49_n17_p3648_Gomez2023-06-08T15:00:13Z Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization Hydrogels Photopolymerization Silsesquioxanes Acrylic monomers Ethylene Hydrolysis Light Photopolymerization 2-hydroxyethylmethacrylate Cross-linked polymers Ethylene diamine Glycidyl methacrylate Hydrolytic condensation Silsesquioxanes Visible light photopolymerization Water solutions Hydrogels amine cross linking agent hydrogel polyacrylate polyamine polyethylene polymerization synthesis A silsesquioxane bearing methacrylate and amine groups was synthesized by reacting half of the NH groups of N-[3-(trimethoxysilyl)-propyl]ethylene diamine with glycidyl methacrylate, followed by the hydrolytic condensation of methoxysilane groups. This led to a water-soluble silsesquioxane functionalized with methacrylate and amine groups (SFMA) that was characterized by UV-MALDI TOF MS. A formulation containing safranine-O as sensitizer and SFMA as co-initiator (electron donor)/crosslinker was used for the visible-light photopolymerization of water solutions of 2-hydroxyethylmethacrylate (HEMA) and acrylamide (AAm). Without SFMA addition no reaction was observed while in the presence of 0.8 wt% SFMA with respect to monomers, crosslinked polymers (hydrogels) were obtained. Swelling of the resulting hydrogels in a broad pH range was investigated. © 2008 Elsevier Ltd. All rights reserved. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00323861_v49_n17_p3648_Gomez http://hdl.handle.net/20.500.12110/paper_00323861_v49_n17_p3648_Gomez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Hydrogels Photopolymerization Silsesquioxanes Acrylic monomers Ethylene Hydrolysis Light Photopolymerization 2-hydroxyethylmethacrylate Cross-linked polymers Ethylene diamine Glycidyl methacrylate Hydrolytic condensation Silsesquioxanes Visible light photopolymerization Water solutions Hydrogels amine cross linking agent hydrogel polyacrylate polyamine polyethylene polymerization synthesis |
| spellingShingle |
Hydrogels Photopolymerization Silsesquioxanes Acrylic monomers Ethylene Hydrolysis Light Photopolymerization 2-hydroxyethylmethacrylate Cross-linked polymers Ethylene diamine Glycidyl methacrylate Hydrolytic condensation Silsesquioxanes Visible light photopolymerization Water solutions Hydrogels amine cross linking agent hydrogel polyacrylate polyamine polyethylene polymerization synthesis Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| topic_facet |
Hydrogels Photopolymerization Silsesquioxanes Acrylic monomers Ethylene Hydrolysis Light Photopolymerization 2-hydroxyethylmethacrylate Cross-linked polymers Ethylene diamine Glycidyl methacrylate Hydrolytic condensation Silsesquioxanes Visible light photopolymerization Water solutions Hydrogels amine cross linking agent hydrogel polyacrylate polyamine polyethylene polymerization synthesis |
| description |
A silsesquioxane bearing methacrylate and amine groups was synthesized by reacting half of the NH groups of N-[3-(trimethoxysilyl)-propyl]ethylene diamine with glycidyl methacrylate, followed by the hydrolytic condensation of methoxysilane groups. This led to a water-soluble silsesquioxane functionalized with methacrylate and amine groups (SFMA) that was characterized by UV-MALDI TOF MS. A formulation containing safranine-O as sensitizer and SFMA as co-initiator (electron donor)/crosslinker was used for the visible-light photopolymerization of water solutions of 2-hydroxyethylmethacrylate (HEMA) and acrylamide (AAm). Without SFMA addition no reaction was observed while in the presence of 0.8 wt% SFMA with respect to monomers, crosslinked polymers (hydrogels) were obtained. Swelling of the resulting hydrogels in a broad pH range was investigated. © 2008 Elsevier Ltd. All rights reserved. |
| title |
Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| title_short |
Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| title_full |
Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| title_fullStr |
Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| title_full_unstemmed |
Silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| title_sort |
silsesquioxane functionalized with methacrylate and amine groups as a crosslinker/co-initiator for the synthesis of hydrogels by visible-light photopolymerization |
| publishDate |
2008 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00323861_v49_n17_p3648_Gomez http://hdl.handle.net/20.500.12110/paper_00323861_v49_n17_p3648_Gomez |
| _version_ |
1768546106234372096 |