Date of Award
Bachelor of Science
Paper Science and Engineering
Different carbons deink to different brightness values. Deinking paper printed with inks composed of constant vehicles and different carbon pigments yielded a brightness range of 13.5 points.
General trends indicate that deinkability improves as carbon particle size increases and as structure level decreases. These trends are not conclusive, however, and significant variations from these trends were detected. It . appears that the product of carbon particle size and structure level is more closely related to the final brightness than either particle size or structure level alone.
Smith, Brian D., "The Effects of Carbon Particle Size on Deinking" (1979). Paper Engineering Senior Theses. 496.