Study of response thermally stimulated of LDPE/CB composite by of the technique of thermally stimulated depolarization current (TSDC)

Quimica nova

Rúvolo Filho, Ademar¹  Robert, Renê²  Kowalski, Edemir Luiz² 

[1] Universidade Federal de São Carlos, São Carlos, Brasil;Universidade Federal do Paraná, Curitiba, Brasil

关键词: TSDC;    LDPE;    carbon black.;   

DOI  :  10.1590/S0100-40422009000500007

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The thermally stimulated depolarization current (TSDC) in a range of temperature from 84 to 373 K, has been applied to study the depolarization current of polyethylene and polyethylene composites in form of film and filled with commercial or oxidative surface treatment carbon black. The diagrams of TSDC obtained show that the composite in which the carbon black had received oxidative surface treatment reducing on an average depolarization current intensity in a magnitude order if compared to the composite with commercial carbon black. Therefore in the area between α and β transitions the difference is accentuated by reaching a peak 55 times in a temperature of 240 K. The difference in results is explained in terms of molecular interactions neighboring of carbon black particles.

【 授权许可】

CC BY