Abstract
Precipitated calcium carbonate(PCC) inorganic fillers for plastic offera higher replacement ratio with improved mechanical properties than any other inorganic fillers. Due to its secure economic feasibility, its fields of application areexpanding. For optimized PCC grain size and polymer replacement ratio, it is good to maintain at least 0.035 μm grains and keep double the grain size of distance between particles, depending on the molecular weight and volume replacement rate of the polymer. PCC has unique characteristics, ie, with smaller grain size, dispersibility decreases, and if grain size is not homogenous, polymer cracking occurs. The maximum replacement ratio of PCC is approximately 30%, but in the range of 10 - 15% it produces the highest mechanical strength. When mixed with a biodegradable plastic like starch, it also improves initial environmental degradability.
Highlights
Precipitated calcium carbonate(PCC) was first manufactured commercially in England in the 1850s, and since these inorganic fillers have been used for nylon in the plastic industry by Monsanto and DuPont Inc., U.S.A. and its use as an inorganic filler for plastic has been expanding
This study investigated the characteristics of polymerfiller composites using precipitated calcium carbonate as a function of particle size and replacement ratio
The optimum grain size of PCC for improving the characteristics of plastic is determined by the volume fraction of polymer
Summary
Precipitated calcium carbonate(PCC) was first manufactured commercially in England in the 1850s, and since these inorganic fillers have been used for nylon in the plastic industry by Monsanto and DuPont Inc., U.S.A. and its use as an inorganic filler for plastic has been expanding. In 2011 the plastics industry was the second largest source of demand for calcium carbonate inorganic filler, following the paper industry, and 15.5 million tons of ground calcium carbonate(GCC) and 3.8 million tons of PCC were used. Calcium carbonate inorganic filler accounts for over 90% of the inorganic filler consumed for the production of polyvinyl chloride(PVC), polypropylene(PP), and polyethylene(PE). Global consumption of GCC was about 74 million tons in 2011, and PCC was about 14 million tons.
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