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当前位置: 首页 > 文章 > 密闭高温软化处理竹材的玻璃化转变温度 林业科学 2006,42 (7) 91-93
Position: Home > Articles > Glass Transition Temperature of Bamboo after Softening Treatment at High Temperature Scientia Silvae Sinicae 2006,42 (7) 91-93

密闭高温软化处理竹材的玻璃化转变温度

作  者：
程瑞香;张齐生
单  位：
东北林业大学生物质材料科学与技术教育部重点实验室;南京林业大学竹材工程研究中心
关键词：
竹材;软化处理;玻璃化转变温度(Tg);动态热机械分析(DMA)
摘  要：
动态热机械分析(DMA)可以用来评判水热处理竹材的效果。DMA研究表明:高温软化处理的竹材,其储能模量明显降低,在40℃时,经高温软化处理后竹材的储能模量比未软化处理后的竹材降低了60.4%;未软化处理竹材的玻璃化转变温度(Tg)为119.8℃,软化处理竹材的玻璃化转变温度(Tg)为88.4℃,软化处理竹材的Tg比未软化处理竹材的T下降了26.2%。
译  名：
Glass Transition Temperature of Bamboo after Softening Treatment at High Temperature
作  者：
Cheng Ruixiang~1 Zhang Qisheng~2(1.Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University Harbin 150040;2.Bamboo Engineering Research Center, Nanjing Forestry University Nanjing 210037)
关键词：
bamboo; softening treatment; glass transition temperature (T_g); dynamic mechanical analysis (DMA)
摘  要：
Dynamic mechanical analysis (DMA) could be used to evaluate the effect of softening treatment with heat and water.The results of DMA showed that storage modulus (E′) of softening treatment bamboo at 120 ℃ for 30 min was apparently decreased compared with that of no softening treatment bamboo. The storage modulus (E′) of bamboo at 40 ℃ after softening treatment at 120 ℃ for 30 min reduced 60.4% compared with that of no softening treatment bamboo. That is to say that the effect of softening treatment at high temperature was obvious. Glass transition temperature (T_g) of no softening treatment bamboo was 119.8 ℃, while glass transition temperature (T_g) of softening treatment bamboo at 120 ℃ for 30 min was 88.4 ℃, T_g of softening treatment bamboo at 120 ℃ for 30 min decreased 26.2% compared with that of no softening treatment bamboo.

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