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Preparation and modification of nano calcium carbonate filler from waste marble dust and commercial limestone for papermaking wet end application

El-Sherbiny S., El-Sheikh S.M. and Barhoum A.Preparation and modification of nano calcium carbonate filler from waste marble dust and commercial limestone for papermaking wet end application,Powder Technology,279: 290,300,2015.

doi: http://dx.doi.org/10.1016/j.powtec.2015.04.006

The objective of thisworkwas to prepare lowcost CaCO3 nanofillers forwet end papermaking application. CaCO3
nanofillers were successfully prepared from commercial limestone and white waste marble dust using wet
carbonation technique. Anionic (sodium oleate) and cationic surfactants (CTAB) were used to modify the size,
morphology and surface property of CaCO3. The prepared CaCO3 fillers were applied in paper handsheets and
their effect on paper quality was systematically investigated. The results obtained from XRD and FTIR revealed
that the prepared CaCO3 particleswere typically calcite. The presence of surfactant during the preparation significantly
reduced the particle size and changed the morphology from scalenohedral to rhombohedral as illustrated
from TEM results. The surfactant modification of filler improved the retention and consequently all the paper
optical properties significantly increased. However, the strength properties were practically unchanged despite
the high retention values obtained compared with GCC, indicating improved affinity of the filler particles to
the fibres. Oleate modified CaCO3 showed higher effect on retention, apparent density, opacity, and mechanical
properties than the CTAB modified CaCO3.
The SEM images of paper handsheets confirmed the results and indicated that the modified nano CaCO3 are
highly retained and more effectively adhered and bonded to pulp fibre, in addition to their uniform distribution
on paper surface.

BibTeX

@article{,
    author  = "El-Sherbiny, S.; El-Sheikh, S.M.; Barhoum, A.",
    title   = "Preparation and modification of nano calcium carbonate filler from waste marble dust and commercial limestone for papermaking wet end application",
    journal = "Powder Technology",
    year    = "2015",
    volume  = "279",
    number  = "",
    pages   = "290,300",
    month   = "",
    doi     = "http://dx.doi.org/10.1016/j.powtec.2015.04.006",
    note    = "",
}