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Author: search.filters.author.Pavasupree, SorapongSubject: search.filters.subject.Ball milling

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    Extraction and characterization of nanocellulose from sugarcane bagasse by ball-milling-assisted acid hydrolysis
    (2018-09-05)
    Plermjai, Kittiya
    ;
    Boonyarattanakalin, Kanokthip
    ;
    Mekprasart, Wanichaya
    ;
    Pavasupree, Sorapong
    ;
    Phoohinkong, Weerachon
    This study is proposed to characterize nanocellulose extracted from sugarcane bagasse (SCB). For extracting cellulose, the bagasse was treated by chemical treatment. The nanocellulose was prepared using ball-milling with acid hydrolysis. Morphology of bagasse, cellulose and nanocellulose were characterized by scanning electron microscopy (SEM). The chemical composition of extracted cellulose and nanocellulose was investigated by Fourier-transformed infrared spectroscopy that verifying the removal of lignin and hemicellulose during cellulose isolation process from sugarcane bagasse. The crystalline structure of cellulose and nanocellulose were characterized by X-ray diffraction (XRD), indicating that the nanocellulose prepared by ball milling with acid hydrolysis has higher crystallinity than nanocellulose prepared only ball milling.
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    Uv shielding properties of cellulose/tio 2 composite film
    (2018-05-01)
    Plermjai, Kittiya
    ;
    Phoohinkong, Weerachon
    ;
    Pavasupree, Sorapong
    ;
    Mekprasart, Wanichaya
    ;
    Pecharapa, Wisanu
    Cellulose/TiO <inf>2</inf> composite film was prepared for UV shielding applications. Cellulose was extracted from sugarcane bagasse by ball milling process. The cellulose/ TiO <inf>2</inf> composite film with different concentrations of cellulose showed a synergic feature of optical transparency and UV-blocking. The crystalline structure of cellulose was characterized by X-ray diffraction (XRD). The treated cellulose has higher crystallinity than the untreated cellulose. Fourier transform infrared spectroscopy ( FT-IR) analysis shows the evidence of chemical treatment hemicellulose and lignin removal from sugarcane bagasse. The optical properties were measured by UV-Vis spectrometer, the results of TiO <inf>2</inf> and cellulose solution correspond to UV-A and UV-C absorbance regions with high transparent of cellulose composite films. The revealed results are essential for UV protecting materials application.