Acetylation of Chinese bamboo flour and thermoplasticity  

乙酰化竹材的制备及其热塑性研究(英文)

作　　者：李雪芳[1] 陈钦慧[1] 林金火[1] 卓东贤[1] 吴秀玲[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《Journal of Forestry Research》2008年第1期69-71,共3页林业研究（英文版）

基　　金：Fujian Province science and technology office (2007F5030);(in part) National Natural Scince Foundation of China (grant 50473063)

摘　　要：Chinese bamboo flour was chemically modified by acetylation with acetic anhydride by using trichloroacetic acid as an activation agent and the optimized condition for acetylation of bamboo flour was determined as the trichloroacetic acid amount 6.0 g per 1.5-g bamboo flour, ultrasosonication duration 40 min and the reaction time 1 h at 65℃. The composition, microstructure and thermal behavior of acetylated bamboo flour were preliminarily characterized by FT-IR, DSC and SEM etc. The acetylated bamboo flour can be molded into sheets at 130℃ and 10 MPa, indicating the modified bamboo flour possesses thermalplastic performance.利用三氯乙酸作为预处理剂,超声波作用后以乙酸-乙酸酐作酰化剂对竹材进行乙酰化改性,并总结出竹材的乙酰化最佳反应条件。利用FT-IR、DSC、SEM等对乙酰化竹材的微观结构和热塑性进行了研究和表征,并对三氯乙酸活化竹材的机理进行了讨论。此外,乙酰化竹材在温度为130℃,热压压力为10MPa时可以单独热压成片,显示出良好的热塑性。为改性竹材在新材料领域的应用提供了理论依据。图7参7。

关 键 词：ACETYLATION THERMOPLASTICITY bamboo flour modification trichloroacetic acid 

分 类 号：TS652[轻工技术与工程]