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首页> 外文期刊>Journal of Vinyl & Additive Technology >Antimicrobial Performance and the Cure and Mechanical Properties of Peroxide-Cured Silicone Rubber Compounds
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Antimicrobial Performance and the Cure and Mechanical Properties of Peroxide-Cured Silicone Rubber Compounds

机译：过氧化物硫化的硅橡胶胶料的抗菌性能和固化及力学性能

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摘要

Nanosilver colloid, Ag-based zeolite compound, and 2-hydroxypropyl-3-piperazinylqulnolinecarboxyllc acid methacrylate (HPQCAM) were used as antimicrobial agents and/or mechanical property improvers In peroxide-cured silicone rubber vulcanizates. The vulcanl-zates were prepared by using a two-roll mill followed by a hydraulic press in order to vulcanize the rubber compounds, and their cure characteristics, mechanical properties, and antibacterial performance were assessed. The antimicrobial performance of the silicone rubber compounds was examined through plate-count-agar and drop-plate-agar methods, as well as the halo test. The results suggested that the addition of all of the antimicrobial agents slightly Increased the cure time, except for the Ag-based zeolite. The addition of all of the antimicrobial agents also affected the mechanical properties of the rubber vulcanizates. The Ag-based zeolite gave the silicone rubber compound with the most improved mechanical properties, whereas HPQCAM was the most effective antimicrobial agent, as determined by the occurrence of the inhibition zone and 99% reductions of Staphylococcus aureus and Escherichia coll. The changes in silicone rubber surface with the addition of antibacterial agent were shown by progressive decreases in water contact angle. This result was observed only for the HPQCAI^ agent and was associated with diffusion and the releasing mechanism of the HPQCAM to kill the bacteria. The optical lightness of the silicone vulcanizates decreased with increasing nanosilver content but increased with increasing amounts of Ag-based zeolite or HPQCAM.
机译：在过氧化物固化的硅橡胶硫化物中，纳米银胶体，Ag基沸石化合物和2-羟丙基-3-哌嗪基喹啉羧酸甲基丙烯酸酯（HPQCAM）被用作抗菌剂和/或机械性能改进剂。为了使橡胶化合物硫化，通过使用两辊磨机然后通过液压机来制备硫化橡胶，并评估了它们的固化特性，机械性能和抗菌性能。通过平板计数琼脂法和滴落平板琼脂法以及晕轮测试来检验硅橡胶化合物的抗菌性能。结果表明，除了基于Ag的沸石以外，所有抗微生物剂的添加都稍微增加了固化时间。所有抗微生物剂的添加也影响了橡胶硫化橡胶的机械性能。银基沸石使硅橡胶化合物的机械性能得到最大改善，而HPQCAM是最有效的抗菌剂，这取决于金黄色葡萄球菌和大肠埃希氏菌的抑制区的减少以及99％的降低。水接触角的逐渐减小显示了添加抗菌剂后硅橡胶表面的变化。该结果仅在HPQCAI试剂中观察到，并且与HPQCAM的扩散和杀死细菌的释放机制有关。硅硫化橡胶的光学亮度随纳米银含量的增加而降低，但随银基沸石或HPQCAM含量的增加而提高。

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