Particle Size, Structure and Powdering Process of Calcium Carbonate Nanoparticles Filled Powdered Styrene-Butadiene Rubber

Abstract:

Calcium carbonate nanoparticles (nano-CaCO₃) filled powdered styrene-butadiene rubber (P(SBR/CaCO₃) was prepared by adding nano-CaCO₃ particles, encapsulant and coagulant to styrene-butadiene rubber (SBR) latex by coacervation, and the particle size distribution, structure were studied. Scanning electron microscopy (SEM) was used to investigate the (P(SBR/CaCO₃) particle structure, and a powdering model was proposed to describe the powdering process. The process includes: (i) the latex particles associated with the dispersed nano-CaCO₃ particles (adsorption process) to form “new particles” and (ii) the formation of P(SBR/CaCO₃) by coagulating “new particles”. The SEM results also shown that the nano-CaCO₃ and rubber matrix have formed a macroscopic homogenization in the (P(SBR/CaCO₃) particles and nano-CaCO₃ dispersed uniformly in the rubber matrix with an average diameter of approximately 50 nm.

• Periodical: Advanced Materials Research (Volumes 415-417)
• Pages: 237-242
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.415-417.237
• Online since: December 2011
• Authors: Zhou Da Zhang, Xue Mei Chen, Guo Liang Qu
• Keywords: Nano-CaCO₃, Powdered Rubber, Powdering Process, Styrene-Butadiene Latex

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