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題名 | 氨水濃度對孟宗竹展開板物理及機械性質之影響=Effects of Ammonia Solution Concentration on the Physical and Mechanical Properties of Flattened Bamboo Board from Moso Bamboo (Phyllostachys pubescens) |
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作 者 | 吳仕揚; 吳東霖; 吳志鴻; | 書刊名 | 林產工業 |
卷期 | 35:1 2016.03[民105.03] |
頁次 | 頁1-9 |
分類號 | 436.187 |
關鍵詞 | 孟宗竹; 竹展開板; 氨水濃度; 物理及機械性質; Moso bamboo; Phyllostachys pubescens; Flattened bamboo board; Ammonia solution concentration; Physical and mechanical properties; |
語文 | 中文(Chinese) |
中文摘要 | 本研究除比較氨水濃度對孟宗竹(Phyllostachys pubescens)展開板物理及機械性質之影響外,亦針對其展平良率進行評估。此外,並利用X-ray繞射儀(X-ray diffractometry, XRD)及全反射式傅立葉紅外線光譜儀(Attenuated total reflectance-Fourier transform infrared spectrometer, ATR-FTIR),分析竹材展平後之結晶度指數及官能基變化。試驗結果顯示,經過氨水處理後,竹展開板之質量損失率、抗彎強度、表面顏色變化以及尺寸安定性均較未經氨水處理之對照組高。而在展平良率方面,氨水濃度在20%以上時,具有較佳之表面品質,且展平良率可達95%以上。再者,經展平處理後,由於非結晶型(Non-crystalline)多醣類的降解,試材結晶度指數有提升現象,且隨氨水濃度增加而增加。而進一步以ATR-FTIR比較氨水處理組及無氨水處理對照組之官能基變化,可以發現處理組之半纖維素訊號明顯減少,顯示氨水處理會促使試材組成分之降解。 |
英文摘要 | The purpose of this study is not only to investigate the effects of ammonia solution concentration on the physical and mechanical properties of flattened moso bamboo board, but also to evaluate the flattening yield after flattening treatment. In addition, the changes in crystallinity index and functional group of bamboo were also determined by X-ray diffractometry (XRD) and attenuated total reflectance-Fourier transform infrared spectrometer (ATR-FTIR), respectively. The results showed that the mass loss, flexural strength, surface color change, and dimensional stability of ammonia pretreated bamboo were higher than those of untreated one. In terms of the flattening yield, when the ammonia solution concentration was above 20%, the flattened bamboo board exhibited a better surface quality, and the flattening yield could reach to more than 95%. Moreover, the crystallinity index of flattened board increased with increasing the ammonia solution concentration due to the degradation of non-crystalline polysaccharides. The specific signals of bamboo hemicellulose decreased significantly after pretreatment with the aqueous ammonia, as revealed by ATR-FTIR analysis. This result showed that ammonia solution could degrade the components of bamboo specimens during the flattening process. |
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