硅烷改性 SiO2 粒子增强含氟丙烯酸酯聚合物树脂基复合材料的制备与表征。
Preparation and characterization of silane-modified SiO particles reinforced resin composites with fluorinated acrylate polymer.
机构信息
Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, PR China.
State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China.
出版信息
J Mech Behav Biomed Mater. 2018 Apr;80:11-19. doi: 10.1016/j.jmbbm.2018.01.004. Epub 2018 Jan 10.
A series of fluorinated dental resin composites were prepared with two kinds of SiO particles. Bis-GMA (bisphenol A-glycerolate dimethacrylate)/4-TF-PQEA (fluorinated acrylate monomer)/TEGDMA (triethylene glycol dimethacrylate) (40/30/30, wt/wt/wt) was introduced as resin matrix. SiO nanopartices (30nm) and SiO microparticles (0.3µm) were silanized with 3-methacryloxypropyl trimethoxysilane (γ-MPS) and used as fillers. After mixing the resin matrix with 0%, 10%, 20%, 30% SiO nanopartices and 0%, 10%, 20%, 30%, 40%, 50% SiO microparticles, respectively, the fluorinated resin composites were obtained. Properties including double bond conversion (DC), polymerization shrinkage (PS), water sorption (W), water solubility (W), mechanical properties and cytotoxicity were investigated in comparison with those of neat resin system. The results showed that, filler particles could improve the overall performance of resin composites, particularly in improving mechanical properties and reducing PS of composites along with the addition of filler loading. Compared to resin composites containing SiO microparticles, SiO nanoparticles resin composites had higher DC, higher mechanical properties, lower PS and lower W under the same filler content. Especially, 50% SiO microparticles reinforced resins exhibited the best flexural strength (104.04 ± 7.40MPa), flexural modulus (5.62 ± 0.16GPa), vickers microhardness (37.34 ± 1.13 HV), compressive strength (301.54 ± 5.66MPa) and the lowest polymerization (3.42 ± 0.22%).
采用两种 SiO2 粒子制备了一系列氟化牙科树脂复合材料。Bis-GMA（双酚 A-甘油二甲基丙烯酸酯）/4-TF-PQEA（氟化丙烯酸酯单体）/TEGDMA（三乙二醇二甲基丙烯酸酯）（40/30/30，wt/wt/wt）作为树脂基质。SiO2 纳米粒子（30nm）和 SiO2 微米粒子（0.3µm）用 3-甲基丙烯酰氧基丙基三甲氧基硅烷（γ-MPS）硅烷化，用作填料。分别将树脂基质与 0%、10%、20%、30%SiO2 纳米粒子和 0%、10%、20%、30%、40%、50%SiO2 微米粒子混合后，得到氟化树脂复合材料。与纯树脂体系相比，研究了双键转化率（DC）、聚合收缩（PS）、吸水率（W）、溶解度（W）、力学性能和细胞毒性等性能。结果表明，填料粒子可以提高树脂复合材料的整体性能，特别是在提高复合材料的力学性能和降低 PS 的同时，随着填料负载的增加。与含有 SiO2 微米粒子的树脂复合材料相比，在相同的填料含量下，SiO2 纳米粒子树脂复合材料具有更高的 DC、更高的力学性能、更低的 PS 和更低的 W。特别是，50%SiO2 微米粒子增强树脂表现出最佳的弯曲强度（104.04±7.40MPa）、弯曲模量（5.62±0.16GPa）、维氏硬度（37.34±1.13HV）、抗压强度（301.54±5.66MPa）和最低的聚合度（3.42±0.22%）。
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