Journal
NORDIC PULP & PAPER RESEARCH JOURNAL
Volume 35, Issue 3, Pages 370-375Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/npprj-2020-0018
Keywords
gas chromatography; headspace; hydrophobic degree; paper packaging material; tracer
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Funding
- Major Special Projects of China Tobacco Yunnan Industrial Co. Ltd [2019GY001, 2017CP01]
- Natural Science foundation of China [21576105, 51409287]
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The present work reports on a method for the determination of hydrophobic degree of paper packaging material by tracer-assisted headspace gas chromatography. The method was based on adding 40 mu L of methanol-water drop on the paper surface for 20 s. After removing the excess water by turning the sample vertically, the sample is placed in a vial and the amount of residual tracer attached on the material surface was accurately quantified by full evaporation headspace gas chromatography. The results show that the present method has a good precision (less than 4.1 %). The present method is simple and accurate and it can be an efficient tool for testing the hydrophobic degree of paper packaging material in batch.
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