| 초록 |
A study was conducted to determine the appropriate surface treatment method for rice husks in order to compare their similar physical properties to linear low-density polyethlyene film. Pulverized rice husk (RH) was treated with NaOH (RH-m), acetic acid (RH-ac), and silane coupling agent (RH-sil) to prepare a composite film with LLDPE resin. The treated RH showed typical mercerization, acetylation, and coupling reactions, as confirmed by XPS, XRD, 13C MAS NMR, FT-IR, and TGA. The RH-m sample was mercerized, allowing hemicellulose and partial amorphous cellulose decomposition. The RH-ac sample was processed via acetylation, showing partial lignin decomposition. Field-emission scanning electron microscopy showed a smaller space at the RH surface for RH-m, RH-ac, and RH-sil compared to untreated RH, implying increased composite compatibility. Particularly, RH-m showed superior tensile strength (23.74 N/mm2) and elongation (982%) compared to other treatment methods. |
