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Carbendazim-clay complexes for its potential use as antimicrobial additives in mortars

机译:Carbendazim-Clay粘土复合物的潜在用途作为迫击炮中的抗微生物添加剂

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摘要

Mortars containing biocidal chemicals are widely applied as they show resistance to microbiological growth, thus preventing the aging of heritage materials. However, factors such as ultraviolet radiation, the weather etc. could greatly affect the biocidal activity of the active principles in mortars. The aim of this study was to optimize the preparation of several complexes of the biocide carbendazim (CBZ) with clays: natural Wyoming montmorillonite SWy-1 and two commercial organoclays, Cloisite (R) 10 and Cloisite (R) 20, and to test their antimicrobial activity for their potential application in restoration mortars. The optimized material here proposed would minimize the amount of active principle needed avoiding its leaching and consequently reducing its environmental impact with a maximum heritage compatibility.Prepared organoclay-CBZ adsorption complexes were inoculated with microorganisms (algae and fungus) to assess the antimicrobial activity. In this sense, one of the CL20-CBZ adsorption complexes which showed the best algicidal and fungicidal activity was used to prepare the antimicrobial mortar, and subsequently compared to those with pure CBZ as an antimicrobial additive. Furthermore, the mortars specimens were subjected to a standardized leaching test to check the effectiveness of the antimicrobial activity. After the leaching tests, the antimicrobial action of mortar containing only CBZ was lower compared to CL20-CBZ which had a good antimicrobial effect. We can conclude from these results that the heritage lime mortars could be easily prepared and have good efficiency against microbial contamination.
机译:含有杀生物化学品的砂浆被广泛应用,因为它们表现出对微生物生长的抗性,因此防止了遗产材料的老化。然而,紫外线辐射,天气等的因素可以极大地影响迫击炮中活性原理的生物杀灭活性。本研究的目的是优化与粘土的杀杀菌剂碳氮尼姆(CBZ)的几个复合物的制备:天然Wyoming Montmorillonite Swy-1和两个商业有机粘土,克洛亚钛矿(R)10和Cloisite(R)20,并测试它们其潜在应用在恢复砂浆中的抗菌活性。这里提出的优化材料将最小化所需的活性原理的量,避免其浸出的活性原理,因此通过最大的遗产相容降低其环境影响。使用微生物(藻类和真菌)接种准备的有机粘土-CBZ吸附复合物,以评估抗微生物活性。从这个意义上讲,显示出最佳的杀菌和杀真菌活性的Cl20-CBZ吸附络合物之一用于制备抗微生物砂浆,随后与纯CBZ的那些作为抗微生物添加剂相比。此外,对迫击炮标本进行标准化浸出试验以检查抗微生物活性的有效性。在浸出试验之后,与具有良好抗微生物效果的CL20-CBZ相比,仅含CBZ的砂浆的抗微生物作用较低。我们可以从这些结果中得出结论,即遗产石灰砂浆可以很容易地制备并具有良好的微生物污染效率。

著录项

  • 来源
    《Building and Environment》 |2020年第10期|107214.1-107214.11|共11页
  • 作者单位

    Univ Cordoba Inst Univ Invest Quim Fina & Nanoquim IUIQFN Dept Quim Inorgan Campus Rabanales E-14071 Cordoba Spain;

    Consejo Super Invest Cient IRNAS CSIC Inst Recursos Nat & Agrobiol Avda Reina Mercedes 10 Seville 41010 Spain;

    Univ Cordoba Inst Univ Invest Quim Fina & Nanoquim IUIQFN Dept Quim Inorgan Campus Rabanales E-14071 Cordoba Spain;

    Univ Cordoba Inst Univ Invest Quim Fina & Nanoquim IUIQFN Dept Quim Inorgan Campus Rabanales E-14071 Cordoba Spain;

    Univ Cordoba Inst Univ Invest Quim Fina & Nanoquim IUIQFN Dept Quim Inorgan Campus Rabanales E-14071 Cordoba Spain;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Adsorption; Biocide; Carbendazim; Clays; Leaching; Mortar;

    机译:吸附;杀生物剂;Carbendazim;粘土;浸出;砂浆;

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