Preparation and properties of nano-TiO2-Chinese herbal medicine composite wood

The sol-gel method was used to make nano-TiO2 and five Chinese herbal medicines of Sophora flavescens Alt., Hypericum perforatum L., Cnidium monnieri (L.) Cuss., Kochia scoparia (L.), Zanthoxylum bungeanum Maxim. prepare kinds nano-TiO2-Chinese medicine composite anti-degradative wood. Populus tomentosa Carr chosen as the wood sample. Indoor decay resistance test results showed that weight gain noticeably increased compared with either modified or wood, reaching a strong level. anti-loss magnitude loss samples treated reduced just medicine. It found by scanning electron microscopy particles enter cell cavity, vessels pits were main permeation channels. Fourier transform infrared analysis could not only interior, associate components through physical adsorption form hydrogen bonds, but also carboxyl groups in cellulose hemicellulose, phenolic hydroxyl group lignin, forming coordinated chemical bond fix it component.