摘要
从玉米芯中提取的木聚糖用于改性竹材,提高竹材的尺寸稳定性;然后以新鲜荷叶和聚二甲基硅氧烷(PDMS)为模板,在改性的竹材表面利用软印刷法制备类荷叶竹材表面。采用抗胀(缩)率(ASE),阻湿率(MEE),增重率(WPG)和增容率(B)对竹材的尺寸稳定性进行了测试,并通过水接触角(WCA)、扫描电镜(SEM)和原子力显微镜(AFM)分析了类荷叶竹表面的超疏水性能和微观结构。研究发现,随着木聚糖含量的增加,改性后竹材的抗溶胀性和WPG相应增加,木聚糖对材竹的增容效果更好。木聚糖在一定程度上改善了竹子的尺寸稳定性。此外,木聚糖处理改性后的类荷叶竹各向异性和超疏水性得到显著改善。本研究为竹材尺寸稳定性及竹材疏水性改良机理的研究奠定了基础。
Xylan extracted from corncobs has been used to modify bamboo timber and to improve their dimensional stability. Then a lotus-leaf-like surface is prepared on the modified bamboo timber using a fresh lotus leaf and PDMS as the template and sealed via soft lithography. The dimensional stability of bamboo timber is tested by ASE, MEE, WPG and B, and the superhydrophobic property and the microstructures of the lotus-like bamboo timber surface are analyzed by WCA, SEM, and AFM. The study finds that with the increasing content of xylan, the anti-swelling property and WPG of modified bamboo timber are increased accordingly, and xylan has a better compatibilization effect on bamboo timber. The dimensional stability of bamboo is improved to a certain extent by xylan. Besides, the anisotropy and superhydrophobicity of the lotus-leaf-like bamboo timber treated by xylan are significantly improved after modification. This research lays a foundation for the studies of the dimensional stability of bamboo timber and the modified mechanism of hydrophobic properties of bamboo.
作者
汤玉训
王发鹏
黄建颖
袁华
庞久寅
林鹏
毛鹏峰
苏连锋
金赵敏
金满洁
李霞
朱俊
范红伟
Tang Yuxun;Wang Fapeng;Huang Jianying;Yuan Hua;Pang Jiuyin;Lin Peng;Mao Pengfeng;Su Lianfeng;Jin Zhaomin;Jin Manjie;Li Xia;Zhu Jun;Fan Hongwei(Hangzhou Iron & Steel Group Co.,Ltd,Zhonghang Monitoring & Testing Technology Research Institute Co.,Ltd,Hangzhou 310000,China;School of Materials Science and Engineering,Zhejiang University,Hangzhou 310000,China;Jilin Wood-based Materials Science and Engineering Key Laboratories, Beihua University,Jilin 132013,China;Faculty of Engineering,Zhejiang Agriculture & Forestry University,Hangzhou 311300,China)
出处
《世界竹藤通讯》
2019年第5期27-33,共7页
World Bamboo and Rattan
基金
国家自然科学基金项目(31470586
31270589)
关键词
尺寸稳定性
超疏水性
各向异性
竹材
木聚糖
软印刷技术
dimensional stability
superhydrophobicity
anisotropy
bamboo
xylan
soft lithography
