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Effects of Ozonized Soybean Oil to Changes of Chemical Structures and Bond Strength of pMD  

You, Young Sam (Department of Forest Science, Konkun University)
Lee, Hyun Jong (Department of Forest Science, Konkun University)
Lee, Taek Jun (Department of Forest Science, Konkun University)
Park, Heon (Department of Forest Science, Konkun University)
Publication Information
Journal of the Korean Wood Science and Technology / v.36, no.4, 2008 , pp. 37-43 More about this Journal
Abstract
The research attempted to develop an eco-friendly wood adhesive based on vegetable oil (soybean oil), the renewable and sustainable natural resources, using ozonification technology for the chemical structure modification. The soybean oils (SBO) were reacted with $O_3$ at the rate of 7.13 g/h for different times, 15 minutes, 30 minutes, 60 minutes, and 120 minutes. Modified chemical structure of the ozonized SBOs were examined by Fourier transform Infrared (FT-IR) spectrum. The FT-IR spectrum of SBO had an absorbance peak at $3010cm^{-1}$ that is the characteristic peak of the unsaturated double bonds. As ozone treatment time increased, the peak of the double bond was disappeared and aldehyde or carboxyl peak appeared at $1700cm^{-1}$. The dry, wet, and cyclic boiling bond strengths of the ozonized SBO mixed with polymeric diphenylmethane-4, 4-diisocyanate (pMDI) were also investigated. In the dry shear test, all strengths met constantly the standard requirement of $7.0kgf/cm^2$ (KS F3101 2006). The bond strengths gradually increased with increasing ozone treatment time. The highest strength showed at 60 minutes ozone treatment and decreased values at 120 minutes. In the cyclic boiling shear test, 30, 60 and 120 minutes exceeded the standard requirement.
Keywords
vegetable oil; ozonification; chemical modification; bond strength; FT-IR;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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