Please use this identifier to cite or link to this item: http://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: http://hdl.handle.net/10316/80186
DOI: 10.1021/ie3035477
Rights: openAccess
Appears in Collections:I&D CIEPQPF - Artigos em Revistas Internacionais

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