dc.contributor.author | Song, Linyong | |
dc.contributor.author | Ye, Qiang | |
dc.contributor.author | Ge, Xueping | |
dc.contributor.author | Misra, Anil | |
dc.contributor.author | Tamerler, Candan | |
dc.contributor.author | Spencer, Paulette | |
dc.date.accessioned | 2017-10-13T16:37:21Z | |
dc.date.available | 2017-10-13T16:37:21Z | |
dc.date.issued | 2016-05-25 | |
dc.identifier.citation | Song, L., Ye, Q., Ge, X., Misra, A., Tamerler, C., & Spencer, P. (2016). Self-Strengthening Hybrid Dental Adhesive via Visible-light Irradiation Triple Polymerization. RSC Advances, 6(57), 52434–52447. http://doi.org/10.1039/C6RA09933E | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/25134 | |
dc.description.abstract | A self-strengthening methacrylate-based dental adhesive system was developed by introducing an epoxy cyclohexyl trimethoxysilane (TS) which contains both epoxy and methoxysilyl functional groups. The experimental formulation, HEMA/BisGMA/TS (22.5/27.5/50, wt%), was polymerized by visible-light. Real-time Fourier transform infrared spectroscopy (FTIR) was used to investigate in situ the free radical polymerization of methacrylate, ring-opening cationic polymerization of epoxy, and photoacid-induced sol-gel reactions. Among the three simultaneous reactions, the reaction rate of the free radical polymerization was the highest and the hydrolysis/condensation rate was the lowest. With 40s-irradiation, the degrees of conversion of the double bond and epoxy groups at 600 s were 73.2±1.2%, 87.9±2.4%, respectively. Hydrolysis of the methoxysilyl group was initially <5%, and increased gradually to about 50% after 48 h dark storage. Photoacids generated through the visible-light-induced reaction were effective in catalyzing both epoxy ring-opening polymerization and methoxysilyl sol-gel reaction. The mechanical properties of copolymers made with TS concentrations from 5 to 35 wt% were obtained using dynamic mechanical analysis (DMA). In wet conditions, the storage moduli at 70 °C and glass transition temperature were significantly higher than that of the control (p<0.05); these properties increased with TS concentration and storage time. The post reaction of hydrolysis/condensation of alkoxysilane could provide persistent strengthening whether in a neutral or acidic environment and these characteristics could lead to enhanced mechanical properties in the oral environment. The cumulative amount of leached species decreased significantly in the TS-containing copolymers. These results provide valuable information for the development of dental adhesives with reduced leaching of methacrylate monomers and enhanced mechanical properties under the wet, oral environment. | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.rights | This article is made available under a Creative Commons Licences. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | en_US |
dc.title | Self-Strengthening Hybrid Dental Adhesive via Visible-light Irradiation Triple Polymerization | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Song, Linyong | |
kusw.kuauthor | Ye, Qiang | |
kusw.kuauthor | Ge, Xueping | |
kusw.kuauthor | Misra, Anil | |
kusw.kuauthor | Tamerler, Candan | |
kusw.kuauthor | Spencer, Paulette | |
kusw.kudepartment | Bioengineering Research Center | en_US |
kusw.kudepartment | Civil Engineering | en_US |
kusw.kudepartment | Mechanical Engineering | en_US |
dc.identifier.doi | 10.1039/C6RA09933E | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.identifier.pmid | PMC5070808 | en_US |
dc.rights.accessrights | openAccess | |