Dynamic behavior of gamma-irradiated polycarbonate

Materia

Suarez, João Carlos Miguez¹  Weber, Ricardo Pondé¹  Vecchio, Keneth S.² 

[1] Instituto Militar de Engenharia, Rio de Janeiro, Brazil;University of California, San Diego, USA

关键词: Polycarbonate;    gamma irradiation;    degradation;    dynamic behavior;    split Hopkinson pressure bar.;   

DOI  :  10.1590/S1517-70762010000200019

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

The aim of the present work was to establish the relationship between dynamic behavior of Bisphenol A polycarbonate (BAPC) and degradation by gamma irradiation. The BAPC was exposed to 340 kGy dose and the molecular weight was evaluated by Size Exclusion Chromatography (SEC). A modified split Hopkinson pressure bar was used to measure stress-strain dynamic relations. The results showed little change in the dynamic behavior of irradiated BAPC in the highest strain rate used in this work, in spite of the high decrease in the molecular weight of irradiated BAPC. The lowest strain rate used in this work produced the highest change in the dynamic behavior of irradiated BAPC.

【 授权许可】

CC BY