Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
598052 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2007 | 7 Pages |
Abstract
The layer-by-layer (LbL) self-assembly technique was applied to deposit organized multilayers of TiO2 or SiO2 nanoparticles of 30-80Â nm diameter, and 50-nm diameter halloysite clay nanotubes on softwood fibers. Fluorescent and scanning electron microscopy images showed complete nanoparticle coating on these fibers. The thickness of the two-layer coating was estimated as 46, 58, and 115Â nm for TiO2, SiO2, and halloysite tubules, respectively, which corresponds to ca. 1Â wt% nanoparticle loading of the fibers. The brightness test of paper handsheets prepared from nanocoated fibers showed that TiO2 nanoparticle coating gave handsheet reflectance of 84% at 450Â nm, which is 4% higher than the brightness of the control sample from virgin fibers. The paper handsheets prepared with nanoparticle-coated fibers had 30-50% higher porosity with tensile strength index retained close to the control sample.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Zonghuan Lu, Sandeep Eadula, Zhiguo Zheng, Karen Xu, George Grozdits, Yuri Lvov,