TY  - JOUR
AU  - Wilden, Andreas
AU  - Mincher, Bruce J.
AU  - Mezyk, Stephen P.
AU  - Twight, Liam
AU  - Rosciolo-Johnson, Kristyn M.
AU  - Zarzana, Chris A.
AU  - Case, Mary E.
AU  - Hupert, Michelle
AU  - Stärk, Andrea
AU  - Modolo, Giuseppe
TI  - Radiolytic and Hydrolytic Degradation of the Hydrophilic Diglycolamides
JO  - Solvent extraction and ion exchange
VL  - 36
IS  - 4
SN  - 0736-6299
CY  - Philadelphia, PA
PB  - Taylor & Francis
M1  - FZJ-2018-02662
SP  - 347-359
PY  - 2018
AB  - The stability of different hydrophilic diglycolamides against acid degradation and radiolysis was studied. Tetraethyldiglycolamide (TEDGA) was found to undergo degradation in nitric acid at high reaction rates at elevated temperatures with a maximum of a ~8% decrease per hour at 65°C in 4 mol L 1 HNO3. The radiolysis was studied for tetramethyldiglycolamide (TMDGA), TEDGA, methyl-tetraethyldiglycolamide (Me-TEDGA), and dimethyl-tetraethyldiglycolamide (Me2-TEDGA). The degradation rates decreased with increasing molecular weight, following the trend TMDGA > TEDGA > Me-TEDGA ≥ Me2-TEDGA. Degradation products were identified by mass spectrometric techniques and were found to be comparable to those previously reported for the radiolysis of lipophilic diglycolamides in dodecane. Significant insight into the degradation mechanism in water was gained using pulse radiolysis experiments. The •OH radical was identified as the most important reactive species and predominant mechanism of radical reaction is one of electron transfer rather than H-atom abstraction.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000445878000002
DO  - DOI:10.1080/07366299.2018.1495384
UR  - https://juser.fz-juelich.de/record/845391
ER  -