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A volatile tracer-assisted headspace analytical technique for determining the swelling capacity of superabsorbent polymers.
- Source :
-
Journal of chromatography. A [J Chromatogr A] 2017 Sep 01; Vol. 1513, pp. 222-225. Date of Electronic Publication: 2017 Jul 18. - Publication Year :
- 2017
-
Abstract
- This paper reports on a new method for the determination of swelling capacity of superabsorbent polymers by a volatile tracer-assisted headspace gas chromatography (HS-GC). Toluene was used as a tracer and added to the solution for polymers swelling test. Based on the differences of the tracer partitioned between the vapor and hydrogel phase before and after the polymer's swelling capacity, a transition point (corresponding to the material swelling capacity) can be observed when plotting the GC signal of toluene vs. the ratio of solution added to polymers. The present method has good precision (RSD<2.1%) and good accuracy, in which the relative deference between the data measured by the HS-GC method and the reference method were within 8.0%. The present method is very suitable to be used for testing the swelling capacity of polymers at the elevated temperatures.<br /> (Copyright © 2017 Elsevier B.V. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1873-3778
- Volume :
- 1513
- Database :
- MEDLINE
- Journal :
- Journal of chromatography. A
- Publication Type :
- Academic Journal
- Accession number :
- 28750731
- Full Text :
- https://doi.org/10.1016/j.chroma.2017.07.054