Naslov
Preparation and Characterization of Polymer Biocomposites Based on Linear Low Density Polyethylene and Rice Husks

Autori
Govorčin Bajsić, Emi ; Mrkonjić, Nikolina ; Martin, Cvetić

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
NanoCon 2019. Abstracts / TANGER Ltd., Ostrava - Ostrava : Tanger, 2019, 104-104

ISBN
978-80-87294-94-9

Skup
11th International Conference on Nanomaterials: Research & Application (NanoCon 2019)

Mjesto i datum
Brno, Češka Republika, 16.10.2019. - 18.10.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
linear low density polyethylene, rice husk, biopolymers, thermal properties, mechanical properties

Sažetak
Ecological concern has recently resulted in a natural sources which are rich in cellulose, cheap and provide good prospective as reinforcements fillers in polymer matrix composites as recyclability and environmental safety. In such a scenario rice husk seems promising as filler for polymer matrix composites. Rice husk is a cellulose-based fibrous material and a waste product of the rice processing industry. Biocomposites made from linear low density polyethylene (LLDPE) and rice husks (RH) in various content (10, 20, 30, 40, 50 wt. %) were prepared by melt compounded in laboratory Brabender mixer. The LLDPE/RH biocomposites were characterized by using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA). Tensile tests were performed to characterize the mechanical properties of the LLDPE/RH biocomposites. The effects of RH content on the thermal and mechanical properties of the biocomposites have been discussed. The DSC results showed that the addition of the RH and increasing the RH content in biocomposites increased the crystallinity degree of the LLDPE/RH biocomposites at lower filler concentration of RH, i.e. 10 and 20wt.% due to nucleating ability of RH . But the crystallinity degree was reduced on addition 30, 40, 50 wt % of RH. This may be attributed to the presence of the higher concentration of the silica from the RH in the crystal structure of LLDPE. The melting temperature of the biocomposites was not significantly changed the Tm was slightly increased with increasing RH content. The results obtained by DMA analysis show a decrease of glass transition temperature (Tg) of LLDPE when it was blended with RH, due to poor compatibility between the polymer matrix and RH. In terms of thermal stability it has been found that the addition of RH decreased the thermal stability of neat LLDPE. Initial degradation temperature of LLDPE/RH biocomposites decreased with the increasing of RH content suggesting that the biocomposites are less thermally stable. Increasing RH content in LLDPE biocomposites resulted in an decrease in the tensile strength and elongation at break.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA