共查询到17条相似文献,搜索用时 78 毫秒
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通过共沉淀和离子交换的方法,将钛和锌离子共掺杂在羟基磷灰石上,制备了羟基磷灰石抗菌剂。研究了其与另外3种无机抗菌剂(锌型沸石抗菌剂、银型沸石抗菌剂、氧化钛光催化抗菌剂)在涂料中的应用。结果证明:锌型抗菌涂料对大肠杆菌和金黄色葡萄球菌的抗菌效果较差,其余3种类型抗菌涂料具有很好抗菌效果。但是,银型抗菌剂易引起涂料变色,氧化钛光催化抗菌剂在涂料中难分散且易加快涂料老化,而羟基磷灰石抗菌剂既具有良好的抗菌性能,且对涂料性能没有影响。还介绍了羟基磷灰石抗菌剂的抗菌机理。 相似文献
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无机抗菌剂在涂料中的应用 总被引:1,自引:0,他引:1
抗菌涂料是90年代中期国外新开发的功能性涂料,基于对环境卫生和国民健康之需求.国内也积极从事无机抗菌剂及抗菌涂料的研究并取得进展。本文从抗菌剂种类、无机抗菌剂的抗菌机理及主要特点,抗菌涂料制备、性能及检测方法等方面进行了探讨与论述。 相似文献
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调湿抗菌内墙涂料的研制 总被引:2,自引:0,他引:2
以苯丙乳液与硅溶胶组成有机-无机复合基料,以硅藻土、高吸水性树脂、海泡石粉组成调湿材料,在非吸湿颜填料、负离子添加剂及助剂的配合下,制备成调湿抗茵内墙涂料。该涂料不但具有普通内墙涂料的一般物理性能,而且还具有调湿防结露功能,同时还能释放负离子、抑茵抗茵、祛除有害气体、清新空气,是一种新型环保、节能的内墙涂料。 相似文献
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Katrina Browne Rajesh Kuppusamy Renxun Chen Mark D. P. Willcox William R. Walsh David StC. Black Naresh Kumar 《International journal of molecular sciences》2022,23(6)
The prevention and treatment of biofilm-mediated infections remains an unmet clinical need for medical devices. With the increasing prevalence of antibiotic-resistant infections, it is important that novel approaches are developed to prevent biofilms forming on implantable medical devices. This study presents a versatile and simple polydopamine surface coating technique for medical devices, using a new class of antibiotics—antimicrobial peptidomimetics. Their unique mechanism of action primes them for activity against antibiotic-resistant bacteria and makes them suitable for covalent attachment to medical devices. This study assesses the anti-biofilm activity of peptidomimetics, characterises the surface chemistry of peptidomimetic coatings, quantifies the antibacterial activity of coated surfaces and assesses the biocompatibility of these coated materials. X-ray photoelectron spectroscopy and water contact angle measurements were used to confirm the chemical modification of coated surfaces. The antibacterial activity of surfaces was quantified for S. aureus, E. coli and P. aeruginosa, with all peptidomimetic coatings showing the complete eradication of S. aureus on surfaces and variable activity for Gram-negative bacteria. Scanning electron microscopy confirmed the membrane disruption mechanism of peptidomimetic coatings against E. coli. Furthermore, peptidomimetic surfaces did not lyse red blood cells, which suggests these surfaces may be biocompatible with biological fluids such as blood. Overall, this study provides a simple and effective antibacterial coating strategy that can be applied to biomaterials to reduce biofilm-mediated infections. 相似文献