PDF(Pubmed)
Abstract：
In the presented study, the effectiveness of a siloxane polyether (HOL7) coating on glass against microbiological colonization was assessed using microalgae as a key component of widespread aerial biofilms. The siloxane polyether was successfully synthesized by a hydrosilylation reaction in the presence of Karstedt\'s catalyst. The product structure was confirmed by NMR spectroscopy and GPC analysis. In addition, the thermal stability of HOL7 was studied by thermogravimetric measurement. Subsequently, the surfaces of glass plates were modified with the obtained organosilicon derivative. In the next step, a microalgal experiment was conducted. A mixture of four strains of algal taxa isolated from building materials was used for the experiment-Chlorodium saccharophilum PNK010, Klebsormidium flaccidum PNK013, Pseudostichococcus monallantoides PNK037, and Trebouxia aggregata PNK080. The choice of these algae followed from their wide occurrence in terrestrial environments. Application of an organofunctional siloxane compound on the glass reduced, more or less effectively, the photosynthetic activity of algal cells, depending on the concentration of the compound. Since the structure of the compound was not based on biocide-active agents, its effectiveness was associated with a reduction in water content in the cells.
摘要：
在提出的研究中，使用微藻作为广泛的空气生物膜的关键成分，评估了玻璃上硅氧烷聚醚（HOL7）涂层对微生物定植的有效性。在Karstedt催化剂存在下通过氢化硅烷化反应成功合成了硅氧烷聚醚。通过NMR光谱和GPC分析确认产物结构。此外,通过热重测量研究了HOL7的热稳定性。随后，用所得有机硅衍生物对玻璃板表面进行改性。下一步,进行了微藻实验。从建筑材料中分离出的四种藻类分类群的混合物被用于实验-嗜糖氯化钠PNK010，弛缓性克雷伯氏菌PNK013，单尿囊藻假脑球菌PNK037和TrebouxiaaggregataPNK080。这些藻类的选择取决于它们在陆地环境中的广泛出现。在玻璃上施加有机官能的硅氧烷化合物减少，或多或少有效，藻类细胞的光合活性，取决于化合物的浓度。由于该化合物的结构不是基于杀生物剂-活性剂，其有效性与细胞中水含量的减少有关。
