Publication Date:
2015-09-16
Description:
This letter reports a significant suppression on space charge in isotatic polypropylene (iPP) by inducing the growth of β -crystal doped with the nucleating agent N,N′ -dicyclohexylterephthalamide (DCTH). The α - and β -crystals in iPP were analyzed, and their effect on space charge and distribution of trap level was studied. Results indicated that the doping of DCTH (0.1 wt. %) had great effect on the formation of the microcrystallite clusters of β -crystal, which makes the fraction of β microcrystallite ( β c ) markedly an increase from 0% to 83.2% in iPP. Compared to the dispersed microcrystallites of α -crystal, the growth of β -crystal effectively suppressed the space charge accumulation. It would attribute that the deep traps greatly weakened the mobility of charge carrier in iPP material.
Print ISSN:
0003-6951
Electronic ISSN:
1077-3118
Topics:
Physics
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