Enhancing mold-resistance of laminated bamboo curtain lumber using three non-native bamboo species.
Laminated bamboo curtain lumber (LBCL) was manufactured from Dendrocalamus hookeri, Bambusa teres, and Yushania alpina all from Nepal or Ethiopia, and was coated with commercial mold inhibitors, 3-iodo-2-propynyl butyl carbamate (IPBC), Tung oil, or nitro-cellulose lacquer to improve anti-mildew capabilities. In the laboratory, resistance of both coated and uncoated LBCL to blue-stain and mold fungi was evaluated using China National Standard GB/T 18261-2000. Results showed that the uncoated LBCL had no anti-mildew capabilities according to areas of mold infection. Bamboo species had little influence on mold resistance with LBCL (P<0.05); whereas, treatment methods had a strong effect on the mold resistance (P<0.01). LBCL made of B. teres had slightly better resistance to Botryodiplodia theobromae than the other two bamboo species (P<0.05), but LBCL coated with 3% IPBC and lacquer was basically resistant to B. theobromae and Trichoderma lignorum. The most effective treatment method that was an LBCL with 5% IPBC and lacquer coating provided 100% resistance to B. theobromae and T. lignorum was the most effective.