Effects of gamma-irradiation on some properties of durolon polycarbonate

被引：40

作者：

Araujo, ES ^{[1
]}

Khoury, HJ ^{[1
]}

Silveira, SV ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Energia Nucl, BR-50740540 Recife, PE, Brazil

来源：

RADIATION PHYSICS AND CHEMISTRY | 1998年 / 53卷 / 01期

关键词：

D O I：

10.1016/S0969-806X(97)00300-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Amorphous Brazilian bisphenol-A polycarbonate (Durolon) is used in medical supplies. Upon gamma-irradiation it undergoes main chain scissions. The major consequences are a decrease in the molecular weight and a yellowness of the polymer. The G (main chain scissions/100 eV) = 1.49, calculated for the dose range of 10-200 kGy through the viscometry method, is not sufficient to promote significant changes in the mechanical properties. The FTIR spectra of irradiated samples show a decrease in carbonyl groups with increase of radiation dose, evidence of scissions in this groups. On the other hand, oxygenated products are not produced in the radiolysis of Durolon. The mechanical properties are not affected significantly up to a dose of 100 kGy, indicating that medical supplies made of Durolon can withstand four sterilization irradiations. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：79 / 84

页数：6

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