Current Research on Agriculture and Life Sciences
- Volume 30 Issue 1
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- Pages.41-50
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- 2012
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- 2287-271X(pISSN)
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- 2288-0356(eISSN)
Isoconversional Cure Kinetics of Modified Urea-Formaldehyde Resins with Additives
- Park, Byung-Dae (Department of Wood Science and Technology, Kyungpook National University)
- Published : 2012.06.30
Abstract
As a part of abating formaldehyde emission of urea-formaldehyde resin, this study was conducted to investigate the rmalcure kinetics of both neat and modified urea-formaldehyde resins using differential scanning calorimetry. Neat urea-formaldehyde resins with three different formaldehyde/urea mol ratios (1.4, 1.2 and 1.0) were modified by adding three different additives (sodium bisulfite, sodium hydrosulfite and acrylamide) at two different levels (1 and 3wt%). An isoconversional method at four different heating rates was employed to characterize thermal cure kinetics of these urea-formaldehyde resins to obtain activation energy (
Keywords
- activation energy;
- additives;
- isoconversional method;
- thermal cure kinetics;
- urea-formaldehyde resin