銅磷酸鹽處理對麻竹竹青綠色堅牢度之影響

Effects of Copper-Phosphorous Salt Treatments on the Green Color Fastness of Ma Bamboo (Dendrocalamus latiflorus)

吳昇原(Sheng-Yuan Wu) ； 吳志鴻(Jyh-Homg Wu) ； 張上鎮(Shang-Tzen Chang)

《林產工業》 21卷4期 (2002/12) Pp. 263-270

摘要

麻竹（Dendrocalamus latiflorus）經由毒性較低的銅磷酸鹽藥劑（CuP）處理後，可以獲得良好的保綠效果。為探討各種銅磷酸鹽處理條件對麻竹竹青綠色堅牢度的影響，本試驗利用人工加速耐光試驗及室內與室外的實際曝露試驗評估銅磷酸鹽藥劑處理後麻竹竹青的綠色堅牢度。試驗結果顯示，經過32天加速耐光試驗後，不同的處理溫度對麻竹的綠色堅牢度並無顯著影響。綜合各種處理條件的結果顯示，當麻竹以1%或2%的銅磷酸鹽藥劑（CuSO4:H3PO4=60:40）在60℃下處理3hr後，可獲得較佳的綠色堅牢度。此外，處理材於室外曝露6個月後，a*值均為正值，表示竹材使用於室外，綠色堅牢度較差；而室內放置6個月後的處理材，Δa*值仍然小於1，相較於未處理竹材a*值的明顯變化（Δa*=15.1），顯示銅磷酸鹽處理竹材具有良好的綠色堅牢度。

關鍵字

銅磷酸鹽 ； 竹青保綠 ； 綠色堅牢度 ； 人工加速耐光試驗 ； 室內曝露 ； 耐候試驗

並列摘要

Ma bamboo (Dendrocalamus latiflorus) treated with low toxic copper-phosphorous salt (CuP) is capable of preserving the green color of culms. To evaluate the effects of various CuP treatment conditions on the green color fastness of ma bamboo, artificially accelerated lightfastness test and two exposure tests including an indoor exposure and an outdoor weathering were employed in this study. Results summarized from the effects of various treatment conditions demonstrated that the best green color fastness of ma bamboo culms was obtained by heating them in 1% or 2% CuP aqueous solution with a 60:40 ratio of CuSO_4to H_3PO_4at 60°C for 3 hr. On the other hand, comparing with the obvious color variations of untreated bamboo (Δa*=15.1), the a* value of treated bamboo remained nearly the same after indoor exposure for 6 months. These results revealed clearly that the green color on the fresh bamboo epidermis faded readily when exposed to indoors, but the specimens exhibited excellent green color fastness after treating it with CuP.

並列關鍵字

Copper-phosphorous salt ； Green color conservation ； Green color fastness ； Artificially accelerated lightfastness test ； Indoor exposure ； Weathering