Preparation and Characterization of KGM/CaCO₃ Composite Films

Abstract:

The influences of processing parameters on the tensile strength (TS) of KGM/CaCO₃ composite films (KCaCF) were investigated through orthogonal experiment method. Calcium carbonate and KCaCF were characterized, respectively, by XRD, laser diffraction particle size analyzer, zeta potential analyzer and SEM. The results showed that micron-sized calcite CaCO₃ crystals with-16.4 mv of Zeta potential were synthesized. Calcium carbonate dispersion was blended with KGM to fabricate KCaCF. The mass of CaCO₃, KGM and swelling time affected TS of composite films differently, but didnt reach the significant level (p>0.05). The optimal preparation process for KCaCF is that 5.0% (wt) of KGM powder is added into the dispersion with 2.0% (wt) of CaCO₃, swelling for 1.0 hour at 50 °C and pH 8.0 and then poured onto plate and dried at 50 °C for 15 h.

• Periodical: Materials Science Forum (Volume 724)
• Pages: 159-162
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.724.159
• Online since: June 2012
• Authors: Yan Chen, Hong Ping Zhang, Xiao Yan Lin, Ming Qi Chen, Yong Man Jiang
• Keywords: CaCO₃, Composite Membranes, KGM

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