Application of TiO2 to Improve the Brightness Stability of HYP Containing Coated Paper
Year: 2011
Type: article
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 TiO 2 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 TiO 2 . Rutile TiO 2 was especially more effective than other types of TiO 2 on yellowing inhibition of coated paper. At a dosage of 3 parts of rutile TiO 2 , 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.
Source: Advanced materials research
Authors: Xing Long Li, Yong Hua Zang, Zhen Juan Wu, Ying Xu
Institution: Tianjin University of Science and Technology
Language: English
Subfield: Mechanics of Materials
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W1976908263