Journal
POLYMER TESTING
Volume 70, Issue -, Pages 170-173Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2018.06.027
Keywords
Molecular weight; Guar gum; n-Butanol; Twice headspace extraction; Gas chromatography
Funding
- State Key Laboratory of Pulp and Paper Engineering [2017PY01]
- Science and Technology Planning Project of Guangdong Province [201713090901064]
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This paper proposed a new method for the determination of the viscosity average molar mass of guar gum, based on a volatile tracer assisted twice headspace extraction gas chromatographic technique. The feasibility study showed that n-butanol was a suitable tracer to be used in this method. The results showed that the present method had a good precision (with the relative standard deviation < 0.86%) and good accuracy (in which the relative differences were within 7.94% when compared with the reference method). The present method is simple and practical. It can conduct an automated measurement when a batch sample testing is required.
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