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

对于木材的防腐，控制木材的变质是非常重要的。变质是木材细胞结构在微生物产生的酶的作用下被破坏的现象。因此，控制和预防木材的变质必须成为重要的研究主题。在本研究中，我合成了多种氟烷基化寡聚剂，并将其应用于纤维素作为木材的模型，通过在木材表面添加拒水剂来控制木材的变质。结果表明：(1)具有三甲氧基硅酸酯或异氰酸酯阻塞基团的氟烷基化低聚物可以改善许多表面的拒水性和拒油性，如玻璃、纤维素、聚酯等。(2)含有阳离子片段、铵和/或磷的共低聚物对金黄色葡萄球菌等具有较高的抗菌活性，并具有拒水和拒油性。(3)含有磷段的共聚物也表现出较强的抗真菌活性。(4)含铵段的共聚物具有杀灭白蚁的活性。(5)发现含有磷段和三甲氧基硅基或封闭异氰酸酯基团的共聚物可作为表面固化剂。实际上，具有磷段的嵌段异氰酸酯共聚物对木材的变质具有较强的控制能力。

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.