Positron annihilation lifetime spectroscopy study on epoxy moisture absorption

被引：1

作者：

Gordo, P. M. ^{[1
]}

Luis, J. M. M. ^{[1
]}

Marques, M. F. Ferreira ^{[1
,2
]}

Naia, M. Duarte ^{[3
]}

Morais, J. J. M. ^{[4
]}

机构：

[1] Univ Coimbra, Dept Phys, CEMUC, P-3004516 Coimbra, Portugal

[2] ISEC IPC, Dept Chem & Biol Engn, P-3030199 Coimbra, Portugal

[3] CMEC, ECT UTAD, Dept Phys, P-5001801 Vila Real, Portugal

[4] CITAB, ECT UTAD, Dept Engn, P-5001801 Vila Real, Portugal

来源：

16TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION (ICPA-16) | 2013年 / 443卷

关键词：

D O I：

10.1088/1742-6596/443/1/012055

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Positron annihilation lifetime spectroscopy was used to study the effect of water uptake on the free volume of a commercial epoxy exposed to atmospheres with relative humidity ranging from 30.5% to 95.8%. The absorption process was also analyzed by gravimetric measurements. When exposed to humidity the mean hole volume remains constant and the number of holes not occupied by water molecules decrease with increasing of both the exposure time and the relative humidity as indicated by the constancy of tau(3) and the decrease of I-3.

引用

页数：4

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