Effects of polypropylene methyl polyhedral oligomeric silsesquioxanes and polypropylene-grafted maleic anhydride compatibilizers on the properties of palm kernel shell reinforced polypropylene biocomposites

Abstract

SbstractThe effects of the polypropylene-grafted maleic anhydride (PP-g-MAH) and polypropylene methyl polyhedral oligomeric silsesquioxane (PP-POSS) compatibilizers on the mechanical, thermal and physical properties of palm kernel shell (PKS) reinforced polypropylene (PP) were investigated. The production of PP/PKS biocomposites was performed by melt mixing using Brabender Internal Mixer. Mechanical test results showed that the biocomposites with PP-g-MAH have better tensile strength compared to biocomposites with or without PP-POSS. The results also showed an increase in the tensile strength and elongation at break when compatibilizers were added. Polypropylene-grafted maleic anhydride improved the Young's modulus of the biocomposites, but PP-POSS reduced it. Moreoever, adding compatibilizers in biocomposites reduced the water absorption of the biocomposites. The compatibilizers improved the nucleating ability of filler in the composites. The PP-g-MAH compatibilizer provided better performance in improving nucleating ability to biocomposites compared to PP-POSS.

Mechanical and Thermal Properties of Hybrid Non-Woven Kenaf Fibre Mat-Graphene Nanoplatelets reinforced Polypropylene Composites

“…This is because of the addition of stiffer material into the matrix will increase the modulus properties. This is as reported by previous study where the improvement of the overall composites modulus is caused by the replacement of the polymer matrix with particulate filler which are stiffer [9]. According to Fu et al [10] and Abu Bakar et al [11], the restriction of the matrix to move and deform due to the presence of particulate filler which cause a mechanical restraint also lead to increasing modulus.…”

Investigation on influence of stamp forming parameters on formability of thermoplastic composite

“…In this experimental work, an isotactic polypropylene (0.5mm film, ρ =0.905 g/cm 3 ) reinforced with novel plain weave ( Figure 2) glass fabric (265 g/m 2 , ρ =2.54 g/cm 3 , f v =19%) thermoplastic composite fabricated through hot compression molding using film stacking approach was used for the stamp forming process [21] . The (3-aminopropyl) trimethoxy silane and polypropylene grafted maleic anhydride [22] were used as the silane coupling agent and matrix compatibilizer, respectively for the purpose of improving the adhesion between the matrix and reinforcement.…”

Comparison of MA-g-PP effectiveness through mechanical performance of functionalised graphene reinforced polypropylene

“…The same shows 62% enhancement in tensile strength match up to pure PP. The presence of compatibilizer enhances the dispersal of graphene in the base PP matrix [9,10,20] . However with increase in filler content beyond 5 wt.-% for PMG5, the tensile strength starts to decrease.…”

“…COOH-Gr is highly polar and PP is nonpolar, mismatch occurs during nanocomposite production. Maleic anhydride grafted polypropylene (MA-g-PP) is the compatibilizer used to further increase the interaction among the fillers and the matrix [9,10] . This is possible because of the polar to polar interaction between the compatibilizer and COOH-Gr.…”