Improved Filler-Matrix Coupling in Resin Composites
Improved Filler-Matrix Coupling in Resin Composites
复制标题
改进树脂复合材料中的填料-基体耦合
DOI：
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
B. Van Meerbeek
中科院分区：
文献类型：
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作者：
Y. Yoshida;K. Shirai;Y. Nakayama;M. Itoh;M. Okazaki;H. Shintani;S. Inoue;P. Lambrechts;G. Vanherle;B. Van Meerbeek
牙科复合材料中填料和基质之间的无效硅烷偶联易于加速体内降解。在这项研究中，我们研究了在何种程度上的程序，涉及硅烷化前的填料的化学去污可以提高填料-基体的结合，从而提高复合材料的物理机械性能。X射线光电子能谱分析表明，填料-基体间的偶联主要依赖于二氧化硅表面与硅烷分子之间的硅氧烷桥（Si-O-Si）的形成，而不是相邻硅烷分子之间的分子间键合。预硅烷化去污基于在0.05-5%过硫酸钠中煮沸二氧化硅，然后在丙酮中超声冲洗，最有效地去污填料。因此，它显著改善了硅烷分子与二氧化硅表面的硅烷醇基团的键合。预硅烷化净化填料后产生的实验复合材料显示了抗热循环降解的径向拉伸强度。
Ineffective silane coupling between filler and matrix within dental composites is prone to accelerated in vivo degradation. In this study, we examined to what degree a procedure involving chemical decontamination of filler prior to silanization could improve the filler-matrix bonding, and thus the physico-mechanical properties, of composites. X-ray photoelectron spectroscopy revealed that filler-matrix coupling largely depended upon siloxane bridge (Si-O-Si) formation between the silica surface and the silane molecule, rather than on intermolecular bonding between adjacent silane molecules. Pre-silanization decontamination based upon boiling silica in 0.05-5% sodium peroxodisulfate, followed by ultrasonic rinsing in acetone, most effectively decontaminated filler. Consequently, it significantly improved the bonding of silane molecules to silanol groups at the silica surface. Experimental composites produced following pre-silanization decontamination of filler revealed a diametral tensile strength that was resistant to degradation by thermocycling.
影响因子：
2.9
作者：
MOHSEN, NM;CRAIG, RG
通讯作者：
CRAIG, RG