Electret state in blendmers of polypropylene, PP grafted with maleic anhydride and polycarbonate

Author

Matsuura, Satoshi ; Takamatsu, Toshiaki

Author_Institution

Grand Polymer Co. Ltd., Ichihara, Japan

fYear

1996

fDate

25-30 Sep 1996

Firstpage

487

Lastpage

492

Abstract

Electret properties in Blendmer of polypropylene, Maleic anhydride grafted [MAH-PP] and polycarbonate have been studied. The blendmer films were polarized by corona discharge or by applying various d.c. electric field. Temperature dependence of residual surface charge and thermally stimulated depolarization current [TSDC] in the blendmers were measured. The amount of surface charge increased with the increase of MAH-PP content. Two peaks appeared in the TSDC at 90° and 150°C. Low temperature peak may be generated by orientation of the dipole in MAH-PP. High temperature peak may be produced due to migration of homocharge trapped In the phase boundary between crystalline and amorphous region of the blendmers. It was found that the blendmer can be used as an electret air filter material

Keywords

electrets; filtration; polymer blends; polymer films; thermally stimulated currents; DC electric field; MAH-PP; air filter material; blendmer film; corona poling; dipole orientation; electret state; homocharge migration; maleic anhydride grafted polypropylene; polycarbonate; polypropylene; surface charge; thermally stimulated depolarization current; Air cleaners; Amorphous materials; Charge measurement; Corona; Crystallization; Current measurement; Electrets; Polarization; Surface discharges; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1996. (ISE 9), 9th International Symposium on

Conference_Location

Shanghai

Print_ISBN

0-7803-2695-4

Type

conf

DOI

10.1109/ISE.1996.578138

Filename

578138