The pH and buffering potential for water extract of eight imported hardwoods were determined. A pH range of 3.608 to 5.831 was found. The gelation time for a urea-formaldehyde resin for each wood was determined. Result shows that gelation time of a urea-formaldehyde resin was directly correlated to the pH and inversely correlated with acid-buffering potential for eight hardwoods aqueous extracts.
1. 緖論
2. 材料 및 方法
3. 結果 및 考察
4. 結論
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