Diffusion and hydrolysis effects during water aging on an epoxyanhydride system

被引：61

作者：

Capiel, Guillermina ^{[1
,2
]}

Uicich, Julieta ^{[1
,2
]}

Fasce, Diana ^{[2
,3
]}

Montemartini, Pablo E. ^{[1
,2
,4
]}

机构：

[1] UNMdP, Struct Composites Grp, Inst Mat Sci & Technol INTEMA, RA-7575 Mar Del Plata, Buenos Aires, Argentina

[2] Natl Res Council CONICET, RA-7575 Mar Del Plata, Buenos Aires, Argentina

[3] UNMdP, Polymer Characterizat Lab, Inst Mat Sci & Technol INTEMA, RA-7575 Mar Del Plata, Buenos Aires, Argentina

[4] UNMdP, Chem Engn Dept, RA-9302 Mar Del Plata, Buenos Aires, Argentina

来源：

POLYMER DEGRADATION AND STABILITY | 2018年 / 153卷

关键词：

Hydrothermal aging; Water absorption; Hydrolysis; Epoxy-anhydride networks; EPOXY-RESIN; ABSORPTION CHARACTERISTICS; SORPTION CHARACTERISTICS; COMPOSITES; SPECTROSCOPY; TEMPERATURE; NETWORKS; MOISTURE; BEHAVIOR; MATRIX;

D O I：

10.1016/j.polymdegradstab.2018.04.030

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Hydrothermal aging of an epoxy-anhydride network has been studied by means of gravimetric analysis, Fourier transform infrared spectroscopy (FTIR) and modulated differential scanning calorimetry (MDSC). The long-term aging results revealed a fourth stage mechanism in which an initial short diffusional period is followed by the hydrolysis of the ester groups. Degraded materials showed two values of glass transition temperature suggesting a heterogeneous process. Hydrolysis undergoes in preferential sites due to the catalytic effect of the carboxyl acids formed during the chemical degradation. Domains with low crosslinking density and high mobility are formed. At long degradation time, samples presented a unique glass transition temperature around 50 degrees C. The lixiviation of low molecular weight species formed by the hydrolytic scissions was confirmed by FTIR and pH variations. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：165 / 171

页数：7

共 30 条

[1] Effect of water absorption on the mechanical properties of nanoclay filled recycled cellulose fibre reinforced epoxy hybrid nanocomposites [J].

Alamri, H. ;

Low, I. M. .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2013, 44 :23-31

[2] Accelerated ageing due to moisture absorption of thermally cured epoxy resin/polyethersulphone blends. Thermal, mechanical and morphological behaviour [J].

Alessi, S. ;

Conduruta, D. ;

Pitarresi, G. ;

Dispenza, C. ;

Spadaro, G. .

POLYMER DEGRADATION AND STABILITY, 2011, 96 (04) :642-648

[3] IRREVERSIBLE EFFECTS OF MOISTURE ON THE EPOXY MATRIX IN GLASS-REINFORCED COMPOSITES [J].

ANTOON, MK ;

KOENIG, JL .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1981, 19 (02) :197-212

[4] Impact of polar groups concentration and free volume on water sorption in model epoxy free films and coatings [J].

Bouvet, G. ;

Dang, Nguyen ;

Cohendoz, S. ;

Feaugas, X. ;

Mallarino, S. ;

Touzain, S. .

PROGRESS IN ORGANIC COATINGS, 2016, 96 :32-41

[5]

Capiel G., 2015, HDB MAT FAIL ANAL CA, P91

[6] Water diffusion and hydrolysis effect on the structure and dynamics of epoxy-anhydride networks [J].

Capiel, Guillermina ;

Miccio, Luis A. ;

Montemartini, Pablo E. ;

Schwartz, Gustavo A. .

POLYMER DEGRADATION AND STABILITY, 2017, 143 :57-63

[7]

Cohn X., 2014, DURAB COMPOS MAR ENV, P47, DOI [10.1007/978-94-007-7417-9_3, DOI 10.1007/978-94-007-7417-9_3]

[8]

Crank J., 1975, The Mathematics of Diffusion, V2nd

[9] A fully coupled diffusion-reaction scheme for moisture sorption-desorption in an anhydride-cured epoxy resin [J].

El Yagoubi, Jalal ;

Lubineau, Gilles ;

Roger, Frederic ;

Verdu, Jacques .

POLYMER, 2012, 53 (24) :5582-5595

[10] Influence of hydrothermal ageing on the compressive behaviour of glass fibre/epoxy composite pipes [J].

Fitriah, S. N. ;

Majid, M. S. Abdul ;

Ridzuan, M. J. M. ;

Daud, R. ;

Gibson, A. G. ;

Assaleh, T. A. .

COMPOSITE STRUCTURES, 2017, 159 :350-360

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