Study on Fibrillation of Rice Straw Fibers and Cross-linking with Ions to Prepare Hydrophobic Cellulose Films
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 Fe3+.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 Fe3+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 Fe3+,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.
万方数据
维普
