Effect of sonication time on the thermal stability, moisture absorption, and biodegradation of water hyacinth (Eichhornia crassipes) nanocellulose-filled bengkuang (Pachyrhizus erosus) starch biocomposites | Zendy

Edi Syafri | Zendy; Sudirman Sudirman | Zendy; Mashadi Mashadi | Zendy; Evi Yulianti | Zendy; Deswita | Zendy; Mochamad Asrofi | Zendy; Hairul Abral | Zendy; S.M. Sapuan | Zendy; R.A. Ilyas | Zendy; Ahmad Fudholi | Zendy

Open Access

Effect of sonication time on the thermal stability, moisture absorption, and biodegradation of water hyacinth (Eichhornia crassipes) nanocellulose-filled bengkuang (Pachyrhizus erosus) starch biocomposites

Author(s) -

Edi Syafri,

Sudirman Sudirman,

Mashadi Mashadi,

Evi Yulianti,

Deswita,

Mochamad Asrofi,

Hairul Abral,

S.M. Sapuan,

R.A. Ilyas,

Ahmad Fudholi

Publication year - 2019

Publication title -

journal of materials research and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.832

H-Index - 44

eISSN - 2214-0697

pISSN - 2238-7854

DOI - 10.1016/j.jmrt.2019.10.016

Subject(s) - biocomposite , nanocellulose , materials science , biodegradation , starch , absorption of water , thermogravimetric analysis , thermal stability , composite material , cellulose , hyacinth , fourier transform infrared spectroscopy , scanning electron microscope , chemical engineering , food science , chemistry , organic chemistry , composite number , engineering

In Indonesia, starch, particularly that obtained from bengkuang (Pachyrhizus erosus), is abundant and inexpensive, thereby increasing the value of bengkuang starch, which can be mixed with bioplastic-based starch. A biocomposite comprising nanocellulose from water hyacinth (Eichhornia crassipes) and bengkuang starch was successfully fabricated using the solution casting method. Nanocellulose content in the matrix was kept constant at 1 wt%. Moreover, during fabrication, the biocomposite gel was treated in an ultrasonic bath for 0, 15, 30, and 60 min. Further, thermogravimetric analysis, moisture absorption measurements, Fourier transform infrared spectroscopy, and scanning electron microscopy were performed. The biocomposite sample vibrated for 60 min had the highest thermal stability and exhibited low moisture absorption. The soil burial test proved that this biocomposite, as opposed to 0-min vibrated samples, has a slower biodegradation rate. This result was supported by morphological evaluation after biodegradation, in which the 60-min vibrated samples showed a coarse surface and low porosity formation.

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