Controlling of deterioration of wood by fluoroalkyland oligomers habing water-repellency and anti-bacterial properties

对于木材的保存来说，控制木材的变质是非常重要的。变质是指在微生物产生的酶作用下，木材细胞结构遭到破坏的现象。因此，控制和防止木材的变质必须成为重要的研究课题。在本研究中，我合成了各种含氟烷基齐聚物，并将其作为木材的模型，通过在木材表面添加憎水性来控制木材的变质。结果表明：(1)含三甲氧基硅基或封闭异氰酸酯基团的氟烷基化低聚物可以改善玻璃、纤维素、聚酯等多种表面的拒水拒油性能。(2)含阳离子链段、铵和/或膦的共聚低聚物，对金黄色葡萄球菌等具有较高的抗菌活性，并具有较强的拒水拒油性能。(3)含膦段的共聚油具有较强的抗真菌活性。(4)含铵段的共聚油具有杀灭白蚁的活性。(5)含膦段和三甲氧基硅基或封闭异氰酸酯基团的共聚油可用作表面固色剂。实际上，含膦段的嵌段异氰酸酯共聚油具有较强的控制木材劣化的能力。

For the wood preservation, controlling of deterioration of wood is very important. Deterioration is the phenomena that wood cell structure is destroyed by the action of enzymes produced by microorganism. Therefore, it must be the important research theme to confrol and prevent the deterioration of wood. In this research, I synthesized a various kinds of fluoroalkylated oligomenc agents and applied for cellulose as a model of wood to control the deterioration of wood by adding the water-repellency on the surface.As a result, the follwings were clarified :(1) Fluoroalkylated oligomers having trimethoxysilyl or blocked-isocyanate groups can improve the water-and oil-repellency of a lot of surfaces, such as glass, cellulose, polyster and so on.(2) Co-oligomers having cationic segments, ammonium and/or Phosphonium, showd the high anti-bacterial activity against Staphyloccus aureus etc. as well as water-and oil repellency.(3) Co-oilgomers having phosphonium segments also showed strong anti-fungal activity.(4) Co-oilgomers having ammonium segments showed termites-killing activity.(5) Co-oilgomers having phosphonium segments and trimethoxysilyl or blocked-isocyanate groups was found to be applicable as the surface fixing agents.Actually, block-isocynanatc co-oilgomers having phosphonium segments showed the strong ability to control deterioration of wood.