Abstract
AbstractThe effects of phosphate nucleating agent (NA), carboxylate nucleating agent (MD), rosin type nucleating agent (WA) and sorbitol nucleating agent (NX) on crystallization behavior of isotactic polypropylene were investigated by fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and polarized light microscopy (PLM). The results showed that different structure nucleating agents significantly affected the crystallization kinetics, rate and temperature of polypropylene. Among them, half crystallization time of NX nucleating agent was the shortest, which was 53.4 seconds, and the crystallization temperature was the highest, reaching 129.8°C.
Highlights
An et al.: Effect of different nucleating agent on crystallization kinetics and morphology of polypropylene 33 corotating twin-screw extruder with a diameter of 25 mm and a length/diameter ratio of 36/1
Four modified polypropylene samples were tested by FTIR, XRD and DSC
The addition of nucleating agent shortens the semicrystallization time, in which the semi-crystallization time of NX-modified polypropylene is 4.12 min, and the kinetic constant Zt value is 0.106, which indicates that NX-nucleating agent has good nucleating effect
Summary
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