Stabilization of PVA/Chitosan/TiO2 Nanofiber Membrane with Heat Treatment and Glutaraldehyde Crosslink

5th International Conference on Advanced Materials Sciences and Technology

Nasikhudin^1,3 ; Diantoro, M.^3 ; Kusumaatmaja, A.^1,2 ; Triyana, K.^1,2

Departement of Physics, Universitas Gadjah Mada, Sekip Utara BLS.21, Yogyakarta

55281, Indonesia^1

Nanomaterials Research Group Universitas Gadjah Mada, Jl. Kaliurang Km.4, Sekip Utara Yogyakarta

55281, Indonesia^2

Departement of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Indonesia^3

关键词: and TiO2;    Degree of aggregation;    Electrospinning method;    Membrane pore size;    Stability in waters;    Stabilization methods;    Structure and morphology;    TiO2 nano-particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012004/pdf
DOI  :  10.1088/1757-899X/367/1/012004

来源: IOP

【 摘 要 】

PVA/chitosan/TiO2nanofiber membrane have been prepared by electrospinning method. PVA/Chitosan/TiO2nanofibers are poor stability in water. In this paper, the stabilization of PVA/chitosan/TiO2nanofiber membrane was improved by heat treatment and GA crosslink. The structure and morphology of PVA/chitosan/TiO2nanofibers were characterized by FTIR, SEM, and EDAX. The result showed that the stabilization methods affected the morphology of nanofiber membranes and their stability in water. Heat treatment reduces fiber diameter and membrane pore size, in contrast, GA crosslink increase fiber diameter and membrane pore size. Stability in water of nanofiber membranes was examined by immersing in the water for 24 h. The SEM result shows that after immersing in water for 24 h, PVA/Chitosan/TiO2nanofibers without stabilization rapidly shrink and dissolve after dipped in water and finally form transparent gel shape material with a grain of TiO2nanoparticle. PVA/Chitosan/TiO2nanofibers with heat treatment don't dissolve after immersing but present a certain degree of aggregation and swelling, which indicates that heat treatment can improve the stability of the fiber but still low. Meanwhile, PVA/Chitosan/TiO2nanofibers with GA crosslink do not dissolve and change morphology and fiber diameter after immersing 24 h. It indicates that PVA/Chitosan/TiO2nanofibers with GA crosslink have excellent stability in water.