Development of butyl elastomer/methacrylate monomer systems as denture soft lining materials.
Development of butyl elastomer/methacrylate monomer systems as denture soft lining materials.
复制标题
开发丁基弹性体/甲基丙烯酸酯单体系统作为义齿软衬材料。
DOI：
10.1016/s0142-9612(01)00202-2
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发表时间：
2002
期刊：
影响因子：
14
通讯作者：
Kalachandra,S
中科院分区：
文献类型：
--
作者：
Riggs,PD;Parker,S;Braden,M;Kalachandra,S
先前的研究表明弹性体/甲基丙烯酸酯单体配方具有良好的强度；然而，吸水率很高，而且它们也遭受氧化。本研究着眼于三种不同的丁基弹性体的使用，这三种弹性体以其抗氧化性而闻名，即丁基 (PB)、氯丁基 (PCB) 和溴丁基 (PBB)。研究了用含有 1% 二甲基丙烯酸乙二醇酯和 1% 过氧化月桂基（之前研究的 5+ 配方）的甲基丙烯酸乙基己酯胶凝的三种弹性体的拉伸和吸水性能。还测量了纯弹性体的吸水率。拉伸强度较低（PCB5+=3.09±0.12MPa、PBB5+=3.90±0.36MPa）；然而，断裂伸长率值较高(PCB5+=797±17%和PBB5+=599±13%)。吸水量高且持续时间长，没有任何制剂达到平衡。 PCB5+ 的吸收率最高（203 天时约为 6%），PBB5+ 和 PB5+ 的吸收水平相似（203 天时约为 4%）。所有材料均未显示出任何氧化迹象。事实证明，PBB 是三种弹性体中最适合进一步开发软衬里配方的。
Previous studies have shown elastomer/methacrylate monomer formulations to have good strength; however, water uptake was high and they also suffered from oxidation. This study has looked at the use of three different butyl elastomers, well known for their oxidation resistance, butyl (PB), chlorobutyl (PCB) and bromobutyl (PBB). The tensile and water uptake properties of the three elastomers gelled with ethyl hexyl methacrylate containing 1% ethylene glycol dimethacrylate and 1% lauryl peroxide (5+ formulation from previous studies) were studied. Water uptake of the pure elastomers was also measured. Tensile strengths were low (PCB5+=3.09±0.12MPa and PBB5+=3.90±0.36MPa); however, elongation to break values were high (PCB5+=797±17% and PBB5+=599±13%). Water uptake was high and protracted with none of the formulations reaching equilibrium. The PCB5+ had the highest uptake (∼6% at 203 days) with that for PBB5+ and PB5+ at a similar level (∼4% at 203 days). None of the materials showed any sign of oxidation. The PBB proved to be the most suitable of the three elastomers for further development in soft lining formulations.