摘要
农业废弃物稻草秸秆经NaOH预处理、TEMPO氧化和机械处理,再经真空抽滤成膜并与Fe^(3+)交联,制备了具有疏水性的纤维素微细纤维(CMF)膜。通过FESEM、ATR-FT-IR、Zeta电位测试、XRD、拉伸测试、接触角和吸水率等表征,分析了CMF膜的结构和性能。结果表明,CMF充分与Fe^(3+)交联,有效提高了CMF膜的疏水性。CMF膜的疏水性受离子交联时间和Fe^(3+)浓度的影响,其水接触角最高可达134.15°;该膜在水中浸泡24 h后吸水率为50%,明显低于未交联CMF膜(210%)。Fe^(3+)交联的CMF膜还具有良好的湿拉伸力,达37.5 MPa。
Cellulose microfiber(CMF)film with hydrophobicity was prepared from agricultural waste rice straw by caustic soda pulping,TEMPO oxidation and mechanical treatment,followed by vacuum filtration and cross-linking with Fe^(3+).The structure and properties were an‐alyzed by FESEM,ATR-FTI-IR,Zeta potential test,XRD,tensile test,contact angle and water absorption,etc.The results showed that the CMF was sufficiently cross-linked with Fe^(3+)to efficiently improve the hydrophobicity of CMF film.The water contact angle of CMF film was affected by the time of cross-linking and the concentration of Fe^(3+),which reached up to 134.15°.The water absorption of the film im‐mersed in water after 24 h was 50%,which was significantly lower than that of the uncross-linked CMF film(210%).The ionically cross-linked CMF film also had good wet tensile stress of 37.5 MPa.
作者
易泽德
沈娟莉
付时雨
YI Zede;SHEN Juanli;FU Shiyu(State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640;South China University of Technology-Zhuhai Institute of Modern Industrial Innovation,Zhuhai,Guangdong Province,519175)
出处
《中国造纸》
CAS
北大核心
2024年第5期1-9,共9页
China Pulp & Paper
基金
国家重点研究计划国际合作项目(2021YFE0104500)
国家自然科学基金(22078114)。
