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China's rich resources of bamboo and bamboo products are being increasingly used. Bamboo important component lignin easily absorb the ultraviolet radiation generated chromophore affect the color stability of bamboo, bamboo is rich in starch, protein, fat and other nutrients, are highly vulnerable to bacterial mold erosion, protection of the bamboo become a hot research and difficulty. Of economically important bamboo species Moso bamboo (Phyllostachys pubescens Mazel ex H.de Lebaie) for the test material, respectively, using a low-temperature aqueous solution method, ZnO nano-film Ti02 nanofilm bamboo surface in situ generation of sol - gel method. Seed liquid impregnation time, the growth and concentration, growth time and seed liquid pH value changes of the ZnO film morphology, and the differences of the different film forms on the protective properties of bamboo. Explore the feasibility of TiO2 thin film and for bamboo protection. The conclusions were as follows: 1., Using a two-step method of seed formation and crystal growth in the bamboo surface can be grown granular, reticular, tennis-like, linear dumbbell rod, cylindrical in shape and hexahedral like a total in the low-temperature aqueous systems. seven forms of ZnO nano-film. The degree of perfection of ZnO crystals in descending order: hexahedral, cylinders, dumbbells rod, mesh, linear, tennis-like and granular in other conditions consistent with the growth of the seed liquid impregnation time , ZnO film by the crystal as a whole perfect degree of poor morphological changes to the good morphology of the crystals perfect degree; With the increase in the concentration of the growth liquid, the presence of the thread in the thin film form, a cylinder, hexahedral the diameter and the density of the mesh structure have increasing trend; growth time extension will promote the film thickness, density of mesh structure and nanowires substance quantity, length, the increase in diameter; With the increase of the pH value of the seed liquid, the film toward conducive to the formation of a network structure, grown nanowires and micron-sized hexahedral structure direction. Nano-ZnO modified processing bamboo anti-light discoloration, mildew and antibacterial performance improvement is closely related to the film morphology. The bamboo surface film nano-linear, mesh, dumbbell rod, cylinder, six-sided structure ZnO-based anti photochromic significantly enhanced performance; based nanoparticles, tennis-like structure, enhance the effect is not obvious. Based surface film, mesh ZnO nanowire shape bamboo antifungal properties significantly enhanced; dumbbell rod, cylinder and hexahedral structure mainly poor antifungal effect; tennis-like structure-based short-term antifungal effect very good; particulate almost no mildew effect. Surface to form a mesh, the tennis structure ZnO films bamboo antibacterial properties significantly enhanced, they antibacterial rate of E. coli is greater than 99%, both compared to the antibacterial activity value higher antibacterial properties of the mesh structure, better 4. under low temperature conditions, the sol - gel method to form a uniform continuous amorphous Ti02 particles in the bamboo surface film, particle size of 200-300nm, and good distribution. After artificial accelerated aging 120h Ti02 modified sample apparent total color blank bamboo only 1/16, its anti photochromic performance is significantly enhanced, and antifungal properties, a slight raise.
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