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https://hdl.handle.net/10316/80186
Title: | Evaluation of Silica-Coated PCC as New Modified Filler for Papermaking | Authors: | Lourenço, Ana F. Gamelas, José A. F. Zscherneck, Christin Ferreira, Paulo J. |
Issue Date: | 2013 | Citation: | LOURENÇO, Ana F.; GAMELAS, José A. F.; ZSCHERNECK, Christin; FERREIRA, Paulo J. - Evaluation of silica-coated PCC as new modified filler for papermaking. Industrial & Engineering Chemistry Research. 52 : 14 (2013) 5095-5099. | Serial title, monograph or event: | Industrial & Engineering Chemistry Research | Volume: | 52 | Issue: | 14 | Abstract: | Silica-coated precipitated calcium carbonate (PCC) prepared by a sol-gel method in a previous study, was used, for the first time, as filler for papermaking. Three samples of modified PCC, containing 11 wt%, 21 wt% and 29 wt% of silica, were prepared. The handsheets produced with an eucalyptus kraft pulp furnish containing the new PCC-based materials showed better paper strength properties than those with the unmodified PCC, whereas the structural properties and brightness were not affected (for similar filler retention values (ca. 80%)). The results suggest that a thin film of silica coating the calcium carbonate crystals has a positive impact on the filler-to-fiber-to-filler bonding. This may open a new possibility to increase the filler amount in the papermaking industry. | URI: | https://hdl.handle.net/10316/80186 | DOI: | 10.1021/ie3035477 | Rights: | openAccess |
Appears in Collections: | I&D CERES - Artigos em Revistas Internacionais |
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ie3035477.pdf | 283.47 kB | Adobe PDF | View/Open |
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