STUDY ON THE DISPERSION OF NANOSIZED TiO2 IN AQUEOUS MEDIUM AND ITS APPLICATION IN PIGMENT COATED PAPER
In order to improve the dispersion of nanosized TiO2 in aqueous medium, a series of chemical treatments have been conducted in air ambient to modify the surface of nanosized TiO2. Scanning electron microscopy(SEM) and X-ray diffraction (XRD) were introduced to characterize the primary size of nanosized TiO2. Rheometer was adopted to analyze the dispersion of nanosized TiO2 in aqueous medium. It was found that an extensive deaggregation effect with good efficiency and stability could be achieved when the surface of TiO2 particles was treated by aluminium-zirconium coupling agent with COOH group under an appropriate process condition. Thus the dispersion and the dispersion stability of TiO2 particles in aqueous medium could be significantly improved. The influence of nanosized TiO2 with good dispersion stability in aqueous medium on the properties of pigment coated paper was discussed. The results indicated that the properties of coated paper directly depended on the dispersion effect of nanosized TiO2. The properties of coated paper including brightness, gloss, smoothness and surface strength could be greatly improved when nanosized TiO2 treated with aluminium-zirconium coupling agent with COOH group was used in paper coatings. In addition, it was shown that with the increase of nanosized TiO2 amount in coated paper, the main properties of coated paper could be persistently ameliorated.
nanosized TiO2 dispersion paper coatings properties
Tang Yanjun Xue Guoxin Li Youming Zhao Yu
Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education,Zhe Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education,Zhe State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640
国际会议
广州
英文
2059-2062
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）