Academic Journal
Novel lignin α-O-4 derived hydrogen donors in CQ-based photoinitiating systems for dental resins
| Title: | Novel lignin α-O-4 derived hydrogen donors in CQ-based photoinitiating systems for dental resins |
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| Authors: | Lixia Xu, Ying Zhang, Shuqi Jin, Shuxin Luo, Kailun Chen, Sheng Fang, Liangjun Zhong, Jian Zhang, Rui He |
| Source: | Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024) |
| Publisher Information: | Nature Portfolio, 2024. |
| Publication Year: | 2024 |
| Collection: | LCC:Medicine LCC:Science |
| Subject Terms: | Photo-initiating system, Lignin α-O-4, Amine-free, Hydrogen donor, Dental resin, Photopolymerization, Medicine, Science |
| More Details: | Abstract The purpose of this work is to explore the properties of the lignin-derived amine-free photoinitiating systems (PISs) during the curing process. Four novel hydrogen donors (HD1, HD2, HD3, and HD4) derived from lignin α-O-4 structural were designed and synthesized by simple methods, and their low C–H bond dissociation energies on methylene were determined by molecular orbitals theory. Four experimental groups using CQ (camphorquinone)/HD PIs formulated with Bis-GMA/TEGDMA (70 w%/30 w%) were compared to CQ/EDB (ethyl 4-dimethylamino benzoate) system. The photopolymerization profiles and double bond conversion rate was tracked by FTIR experiments; the color bleaching ability of the samples and color aging test assay were performed using color indexes measurements; The cytotoxicity of the samples was also compared to EDB related systems. All of the experimental groups with new HDs were compared to the control group with EDB by statistical analysis. Compared to CQ/EDB system, new lignin-derived hydrogen donors combined with CQ showed comparable or even better performances in polymerization initiation to form resin samples, under a blue dental LED in air. Excellent color bleaching property was observed with the new HDs. Aging tests and cytotoxicity examination of the resin were performed, indicating the new lignin compounds to be efficient hydrogen donors for amine-free CQ-based photo-initiating system. Novel lignin α-O-4 derived hydrogen donors are promising for further usage in light-curing materials. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-024-67377-z |
| Access URL: | https://doaj.org/article/c218b88386d74b7bb9736b80462e2290 |
| Accession Number: | edsdoj.218b88386d74b7bb9736b80462e2290 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 20452322 |
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| DOI: | 10.1038/s41598-024-67377-z |
| Published in: | Scientific Reports |
| Language: | English |