Tris(trimethylsilyl)silane as a co-initiator for dental adhesive: Photo-polymerization kinetics and dynamic mechanical property.
Tris(trimethylsilyl)silane as a co-initiator for dental adhesive: Photo-polymerization kinetics and dynamic mechanical property.
复制标题
Tris（三甲基甲硅烷基）硅烷作为牙齿粘合剂的共同生动剂：照片聚合动力学和动态机械性能。
DOI：
10.1016/j.dental.2015.10.013
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发表时间：
2016-01
期刊：
影响因子：
--
通讯作者：
Spencer P
中科院分区：
文献类型：
--
作者：
Song L;Ye Q;Ge X;Misra A;Spencer P
本研究的目的是评价以三(三甲基硅基)硅烷(TTMSS)为共引发剂的模型牙本质粘结剂的聚合行为，并研究共聚物在干湿条件下的聚合动力学和力学性能。以HEMA/BisGMA(45/55，w/w)为基础的共聚单体混合物作为牙本质粘接剂。光引发剂体系以樟脑酚(CQ)为光敏剂，助引发剂为对二甲氨基苯甲酸乙酯(EDMAB)或TTMSS。在胶粘剂配方中选择性地加入碘盐--二苯基六氟磷酸锂(DPIHP)作为催化剂。以转化率(DC)和干湿条件下的动态力学性能对对照配方和实验配方进行了表征。在双组分光引发剂体系(CQ/TTMSS)中，随着TTMSS浓度的增加，C-═-C双键的聚合速率和Dc增加，并表现出对光照时间和固化光强的依赖关系。含有三组分光引发剂体系(CQ/TTMSS/DPIHP)的共聚物在干湿条件下表现出与含EDMAB体系相似的动态力学性能。以TTMSS为共引发剂的制剂的DC与辐照时间有很强的依赖关系。随着TTMSS的加入，最大聚合速率可调，网络结构更加均匀。结果表明，TTMSS可替代胺类助引发剂用于甲基丙烯酸酯类牙本质粘结剂的可见光引发自由基聚合。
The purpose of this study was to evaluate the polymerization behavior of a model dentin adhesive with tris(trimethylsilyl)silane (TTMSS) as a co-initiator, and to investigate the polymerization kinetics and mechanical properties of copolymers in dry and wet conditions. A co-monomer mixture based on HEMA/BisGMA (45/55, w/w) was used as a model dentin adhesive. The photoinitiator system included camphorquinone (CQ) as the photosensitizer and the co-initiator was ethyl-4-(dimethylamino) benzoate (EDMAB) or TTMSS. Iodonium salt, diphenyliodonium hexafluorophosphate (DPIHP) serving as a catalyst, was selectively added into the adhesive formulations. The control and the experimental formulations were characterized with regard to the degree of conversion (DC) and dynamic mechanical properties under dry and wet conditions. In two-component photoinitiator system (CQ/TTMSS), with an increase of TTMSS concentration, the polymerization rate and DC of C═C double bond increased, and showed a dependence on the irradiation time and curing light intensity. The copolymers that contained the three-component photoinitiator system (CQ/TTMSS/DPIHP) showed similar dynamic mechanical properties, under both dry and wet conditions, to the EDMAB-containing system. The DC of formulations using TTMSS as co-initiator showed a strong dependence on irradiation time. With the addition of TTMSS, the maximum polymerization rate can be adjusted and the network structure became more homogenous. The results indicated that the TTMSS could be used as a substitute for amine-type co-initiator in visible-light induced free radical polymerization of methacrylate-based dentin adhesives.
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影响因子：
5
作者：
Davidson-Kaban, SS;Davidson, CL;Erdilek, N
通讯作者：
Erdilek, N
影响因子：
4.6
作者：
Jakubiak, J;Allonas, X;Rabek, JF
通讯作者：
Rabek, JF
影响因子：
4.9
作者：
Guo, Xinglin;Peng, Zhonghua;Wang, Yong
通讯作者：
Wang, Yong
影响因子：
2.5
作者：
Ahn, KD;Han, DK;Lee, CW
通讯作者：
Lee, CW
影响因子：
4.6
作者：
BROER, DJ;MOL, GN;CHALLA, G
通讯作者：
CHALLA, G