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甲基丙烯酸羟乙酯/柠檬酸改性对竹材防霉性能的影响

叶湘宜 林婧 孙杰宇 章伟伟

叶湘宜, 林婧, 孙杰宇, 章伟伟. 甲基丙烯酸羟乙酯/柠檬酸改性对竹材防霉性能的影响[J]. 竹子学报, 2022, 41(2): 15-23. doi: 10.12390/jbr2022026
引用本文: 叶湘宜, 林婧, 孙杰宇, 章伟伟. 甲基丙烯酸羟乙酯/柠檬酸改性对竹材防霉性能的影响[J]. 竹子学报, 2022, 41(2): 15-23. doi: 10.12390/jbr2022026
YE Xiang-yi, LIN Jing, SUN Jie-yu, ZHANG Wei-wei. Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo[J]. JOURNAL OF BAMBOO RESEARCH, 2022, 41(2): 15-23. doi: 10.12390/jbr2022026
Citation: YE Xiang-yi, LIN Jing, SUN Jie-yu, ZHANG Wei-wei. Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo[J]. JOURNAL OF BAMBOO RESEARCH, 2022, 41(2): 15-23. doi: 10.12390/jbr2022026

甲基丙烯酸羟乙酯/柠檬酸改性对竹材防霉性能的影响

doi: 10.12390/jbr2022026
基金项目: 

植物纤维功能材料国家林业和草原局重点实验室开放研究基金(2020KFJJ05);大学生创新创业训练计划项目(201910564352)

详细信息
    作者简介:

    叶湘宜,本科,从事木材科学与工程研究。E-mail:xiaoye00703@163.com。

    通讯作者:

    章伟伟,助理研究员,从事木竹材综合防护研究。E-mail:zhangww@scau.edu.cn

Effect of Hydroxyethyl Methacrylate/Citric Acid Modification on Mildew Resistance of Bamboo

  • 摘要: 竹材由于内含淀粉等营养源而容易引起霉变,进而降低其外观品质和商品价值,限制竹制品的应用范围。笔者采用甲基丙烯酸羟乙酯/柠檬酸(HEMA/CA)的混合溶液浸渍竹材,使单体发生原位聚合—交联反应,从而提高改性竹材的防霉性能。研究结果表明,当HEMA的浓度为6%,且HEMA与CA的摩尔比为4∶1,交联温度为130 ℃时,竹材防霉改性效果最优,其对混合霉菌的防治效力达到100%。研究不同浓度、不同配比、不同热处理温度等不同处理条件下竹材的防霉性能及改性竹材防霉性能提高的主要原因;并通过红外光谱、热重分析和扫描电镜对其进行表征,结果说明:(1) HEMA与CA的原位聚合交联反应发生在竹材内部;(2)改性竹材的平衡含水率略有下降,而热稳定性并无明显提高;(3)改性前后竹材内的淀粉颗粒的形态基本保持不变。综上分析,推测改性竹材防霉效果的提升是由于侵入竹材的HEMA/CA生成的聚合物在营养源表面形成保护膜,隔绝了霉菌菌丝体的直接接触,从而达到防霉的效果。
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  • 收稿日期:  2022-03-16

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