Application of TiO₂ to Improve the Brightness Stability of HYP Containing Coated Paper

Abstract:

Eco-friendly high-yield pulps (HYP) are becoming increasingly used to product high value-added fine paper that is traditionally produced exclusively with chemical pulps. However, due to the presence of a large quantity of photosensitive lignin in the HYP pulp to more effectively utilize woods resources, there is a concern on the long term brightness stability of HYP containing paper. In this research, various TiO₂ was added to coating colors to improve the light fastness properties of HYP containing coated paper. The effect on the stability of optical properties of coated paper including brightness, opacity, color difference and the degree of brightness reversion before and after accelerated aging were studied. It was shown that the brightness stability of the HYP containing coated paper increased with increased addition of TiO₂. Rutile TiO₂ was especially more effective than other types of TiO₂ on yellowing inhibition of coated paper. At a dosage of 3 parts of rutile TiO₂, the brightness stability of coated paper containing 20% of HYP was found to be even better than paper made of 100% chemical pulp coated with conventional coating color.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 1367-1371
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.1367
• Online since: May 2011
• Authors: Xing Long Li, Yong Hua Zang, Zhen Juan Wu, Ying Xu
• Keywords: Brightness Stability, Coated Paper, High Yield Pulp (HYP), TiO₂

References

[1] Pu Y, Anderson S, Lucia L, et al. Journal of Pulp and Paper Science, 2003, 29(12) ：401.

[2] Paulsson M, Ragauskas A J. Nordic Pulp Paper Research Journal, 1998, 13(2) ：124.

[3] Paulsson M, Parks J. Journal of Wood Chemistry and Technology, 2000, 20(2) ：205.

[4] Janson J, Forsskahl I, Korhonen T. 1995 8th international Symp Wood Pulp Chemical Conference Proceedings. Helsinki, Finland：p.451.

[5] Fornier de Violet P, Nourmamode A, Colombo N, et al. Cellulose Chemical Technology, 1990, 24: 225-235.

[6] Pan X, Harvey L C, Ragauskas A J, et al. Journal of Paper and Pulp Science, 1996, 22(4): 135-140.

[7] Tachibana S, Nakano A, Ohkubo K. Japan Tappi, 1993, 48(6) ：273.

[8] Yuan Z, Schmidt J, Heitner C, et al. Tappi Journal, 2006, 5(1) ：9.

[9] Mailly V, Le Nest J F, Serra Tosio J M, et al. Tappi Journal, 1997, 80(5)：176-183.

[10] Yuan Z, Schmid J, Heitner C. Inhibition of yellowing of papers：Swedish, 023040-1[P].

[11] Zhang H, Hu H, Xu Z. 2008 second international Papermaking & Environment Conference Proceedings, Tianjin, CN： 802-806.

[12] Nordström J-E P, Nordlund J P. Paperi Ja Puu-Paper and Timber, 1996, 80(6) ：449-455.

[13] Lian Gao, Shan Zheng, Qinghong Zhang. Nm-titania Photo-catalytic Materials and Their Application [M]. Beijing：Chemical Industry Press, 2002. In Chinese.

[14] Hoffmann M R, Martin S T, Choi W, et al. Chemical Reviews, 1995, 95(1)：69-96.

[15] Peng You, Xinlian Lv, Fei Yang, et al. China Pulp and Paper, 2008, 27(11)：5-9. In Chinese.

[16] Chengfa Hu. Graphic Chromatology and Colourometry[M]. Beijing：Graphic Communications Press, l993. In Chinese.

[17] Fjellström H, Höglund H, Forsberg S. Nordic Pulp and Paper Research Journal, 2009, 24(2)：206-212.