Effect of compatibilizing agents on the mechanical property of rice husk flour as nano‐potential filler in polypropylene biocomposite

Abstract

In this article, rice husk flour filler/polypropylene (RH/PP) composites with different ratios of the filler were prepared without and with maleated PP, which was used as a compatibilizer. The RH filler in the RH/PP composites was treated with acid and alkali, and their mechanical properties were measured. The mechanical properties were improved with the addition of the compatibilizer. In this study, grafting of maleic anhydride (MA) onto PP with different ratios of benzoyl peroxide (BPO) and MA was prepared. Infrared analysis showed characteristic bands at 1786 and 1863 cm−1 for the grafted sample (maleated PP). Also, from chemical titration, the optimum MA and BPO contents were 4 and 1 part per hundred parts (php of polymer), respectively. The results showed that the morphology of the grafted sample was a flat with coarse surface, and that of the composite clearly elucidated that the interfacial bonding between RH and PP was enhanced by the presence of the compatibilizer. Thermal stability of the grafted PP was enhanced by the grafting process. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Green composites based on polypropylene matrix and hydrophobized spend coffee ground (SCG) powder

“…With regard to flexural modulus, it increases because it represents the ratio between the applied stress (flexural conditions) and flexural strain in the linear region. As in other polymer-filled systems, the decrease in strength is lower than that observed for the strain so that, it gives higher ratio values and, consequently, higher modulus values [30,31]. In PP/SCG composites, the flexural modulus is slightly higher for all treatments except in the case of the hydrophobic treatment with palmitoyl chloride.…”