Tensile, Flexural and Fracture Morphological Properties of Recycled Polypropylene (rPP) Filled Dried Banana Leaves Fibre (DBLF) Composites: Effects of DBLF Loadings

2019 ◽  
pp. 609-618
Author(s):  
Thinakaran Narayanan ◽  
Jeefferie Abd Razak ◽  
Intan Sharhida Othman ◽  
Noraiham Mohamad ◽  
Mohd Edeerozey Abd Manaf ◽  
...  
Keyword(s):  
Morphological Properties ◽  
Recycled Polypropylene ◽  
Banana Leaves

Maleated soybean oil as coupling agent in recycled polypropylene/wood flour composites: Mechanical, thermal, and morphological properties

2018 ◽  
Vol 32 (8) ◽  
pp. 1056-1067 ◽  
Author(s):  
Matheus Poletto
Keyword(s):  
Thermal Properties ◽  
Soybean Oil ◽  
Coupling Agent ◽  
Wood Flour ◽  
Natural Fibers ◽  
Morphological Properties ◽  
Mechanical And Thermal Properties ◽  
Wood Fibers ◽  
Alternative Source ◽  
Recycled Polypropylene

In this study, composites with interesting mechanical and thermal properties were prepared using chemically modified vegetable oil as coupling agent in wood-fibers-reinforced recycled polypropylene. Soybean oil was reacted with maleic anhydride to produce maleated soybean oil (MASO). The mechanical, thermal, and morphological properties of the composite were evaluated. The usage of MASO as a coupling agent clearly improved the interfacial adhesion between wood fibers and the polypropylene matrix and increased the mechanical and thermal properties evaluated. Based on the obtained results, it is concluded that MASO can act as an alternative source of coupling agent dispensing with the addition of petroleum-based compatibilizers to improve the mechanical and thermal properties of composites reinforced with natural fibers.

Effect of Graphite on Mechanical Thermal and Morphological Properties of Kenaf Recycle Polypropylene Wood Plastic Composites

2020 ◽  
Vol 981 ◽  
pp. 144-149
Author(s):  
Ros Azlinawati Ramli ◽  
Muhammad Syafiq Zulkifli ◽  
Nurul Ekmi Rabat
Keyword(s):  
Impact Strength ◽  
Interfacial Adhesion ◽  
Mechanical Test ◽  
Tensile Modulus ◽  
Morphological Properties ◽  
Screw Extruder ◽  
Single Screw Extruder ◽  
Plastic Composites ◽  
Recycled Polypropylene ◽  
Effective Distribution

The objective of this research is to investigate the effect of incorporating graphite filler on mechanical, thermal and morphological properties of wood recycled plastic composites (WrPC). WrPC was prepared using recycled polypropylene (rPP), kenaf core, maleic anhydride polypropylene (MAPP) and graphite filler. The graphite content in WrPC is 3 phr. All materials were premixed manually and fed into a single screw extruder and compression molded to prepare mechanical test specimens. The effect of graphite on tensile properties, impact strength, glass transition temperature (Tg) and morphological properties of WrPC were studied. Tensile strength was increased from 6.81 MPa to 10.07 MPa due to stronger interfacial adhesion between graphite and kenaf/rPP. However, the tensile modulus decreased significantly with the incorporation of graphite. Impact strength of WrPC was increased from 2.48 kJ/m2 to 2.83 kJ/m2 due to the present of graphite that gave effective distribution of applied stress and increase resistance of crack propagation. DSC results indicated that Tg of graphite/WrPC is comparable to WPC at 163°C. The internal structure of WrPC showed the addition of graphite had filled the voids and lead to smooth morphology.

scholarly journals THE EFFECTS OF r-HDPE/r-PP FORMULATION RATIO INTO MECHANICAL, THERMAL AND MORPHOLOGICAL BEHAVIOR OF r-HDPE/r-PP POLYMERIC BLENDS

2020 ◽  
Vol 8 (2) ◽  
pp. 1-9
Author(s):  
Jeefferie Abd Razak ◽  
◽  
Siti Zaleha Wahid ◽  
Noraiham Mohamad ◽  
Poppy Puspitasari ◽  
...  
Keyword(s):  
Primary Phase ◽  
Morphological Properties ◽  
Peak Reduction ◽  
Elongation At Break ◽  
Physical Strength ◽  
Polymeric Blends ◽  
Recycled Polypropylene ◽  
Morphological Behavior ◽  
Pp Blends ◽  
Dominant Peak

This study has reported the effects of different formulation ratio between recycled high density polyethylene (r-HDPE) and recycled polypropylene (r-PP) into the resulted mechanical, thermal and morphological properties of r-HDPE/r-PP polymeric blends. About five (5) different formulation ratio of r-HDPE/r-PP have been prepared and tested. The best combination ratio between r-HDPE and r-PP was determined in this work. It was found that the 70/30 wt.% of r- HDPE/r-PP blend possessed an outstanding mechanical and physical strength. About 59.80% and 2.30% of positive improvement in comparison to 0/100 wt.% of r-HDPE/r-PP was achieved for both of tensile strength and hardness, respectively. Interestingly, for 70/30 wt.% of r-HDPE/r-PP blend had also experienced major increased in their elongation at break up to 473%. The fracture morphological behavior of the tested samples that were observed via SEM observation, had established the interaction between the structure and properties of produced r-HDPE/r-PP blends, especially on the miscibility state between the r-HDPE and r-PP phases. Thermal evaluation by using the DSC had confirmed the partial miscibility state due to dominant peak shifting at 120 - 140°C and obvious melting peak reduction pattern. Overall, from this study, it was found that the blending between r-HDPE and r-PP into r-HDPE/r-PP blends are feasible to improve the properties of primary phase.

scholarly journals Mechanical Properties of Green Recycled Polypropylene Composites: Effect of Maleic Anhydride Grafted Polypropylene (MAPP) Coupling Agent

2013 ◽  
Vol 812 ◽  
pp. 187-191 ◽  
Author(s):  
Nur Izzati Zulkifli ◽  
Noorasikin Samat
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Coupling Agent ◽  
Filler Content ◽  
Mechanical Analysis ◽  
Morphological Properties ◽  
Appreciable Change ◽  
Polypropylene Composites ◽  
Recycled Polypropylene ◽  
Tensile Impact

Recycled polypropylene/microcrystalline cellulose (rPP/MCC) composites were prepared by adding different loadings of maleic anhydride grafted polypropylene (MAPP) coupling agent. The tensile, impact and morphological properties of the composites were investigated. The obtained results show that the tensile and impact strengths of the composites were significantly enhanced with the addition of MAPP loading from 2 to 5 wt%, as compared with unfilled rPP/MCC composites. However, it was found that at low filler content, different amounts of MAPP resulted in no appreciable change in the tensile strength and modulus. Moreover, dynamic mechanical analysis (DMA) results indicated that, increasing the amount of MAPP loading from 2 to 5 wt% in rPP/MCC provide better stiffness of the composite compared to those neat rPP and neat PP. Field emission scanning microscopy (FESEM) has shown that the composite, with MAPP loading, promotes better fibermatrix interaction.

scholarly journals FLAT-PRESSED WOOD PLASTIC COMPOSITES FROM COMMUNITY FOREST WOOD BARK AND RECYCLED POLYPROPYLENE: THE EFFECT OF PRESSING TEMPERATURE ON THE PHYSICAL, MECHANICAL, AND MORPHOLOGICAL PROPERTIES

2021 ◽  
Vol 56 (4) ◽  
pp. 869-878
Author(s):  
Sutrisno ◽  
Eka Mulya Alamsyah ◽  
Atmawi Darwis ◽  
Alia Salima Ahmad ◽  
Shigehiko Suzuki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Morphological Properties ◽  
Thickness Swelling ◽  
Pressing Temperature ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Recycled Polypropylene ◽  
Wood Bark ◽  
Absorption Thickness

The article describes a new idea related to the use of wood bark powder as a filler material in the production of wood plastic composites using flat-pressed method, based on its thermal stability and abundant availability, enabling replacing wood powder, which has been widely used. This research aims to study the effect of temperature on the physical, mechanical, and morphological properties of flat-pressed wood plastic composites made from Gmelina arborea bark and recycled polypropylene. A 40:60 mesh (5% moisture content) of G. arborea bark powder was mixed with recycled polypropylene (RPP) pellets with a weight ratio of 40:60 and a maleic anhydride (MAH) modifier as much as 5% of the weight of the RPP was added. Mixing the ingredients is done in a rotating blender for 15 minutes at a speed of 80 rpm until homogeneous. The mixture was heated at 175oC until the RPP pellets were completely melted and then cooled at room temperature. After that, the material mixture was made into powder and filtered, and then moulded in a steel plate mould at temperatures of 160, 165, and 170oC under a pressure of 30 kg/cm2 for 4 minutes with a target density of 1 g/cm3. Physical properties including density, moisture content, water absorption, thickness swelling, and volume shrinkage according to ASTM D570 standard were determined. Mechanical properties, such as modulus of elasticity (MOE) and modulus of rapture (MOR), referring to ASTM D7031 standard, and tensile strength parallel to panel length, referring to ASTM D638 standard, were also evaluated. In addition, composite morphology was also studied using scanning electron microscopy (SEM). The results showed that the increasing of pressing temperature had a significant effect on the improvement of moisture content, water absorption, thickness swelling, volume shrinkage, and MOR. MOR value increased by 34.12% when the pressing temperature increased form 160oC up to 170oC. Our method allows improving the physical and mechanical properties of wood bark plastic composites based on a pressing temperature of 170oC.

Natural oils as coupling agents in recycled polypropylene wood flour composites: Mechanical, thermal and morphological properties

2019 ◽  
Vol 28 (7) ◽  
pp. 443-450
Author(s):  
Matheus Poletto
Keyword(s):  
Thermal Properties ◽  
Wood Flour ◽  
Treated Wood ◽  
Morphological Properties ◽  
Coupling Agents ◽  
Mechanical And Thermal Properties ◽  
Natural Oils ◽  
Recycled Polypropylene ◽  
Natural Oil ◽  
Polypropylene Matrix

Recycled polypropylene was reinforced with treated and non-treated wood flour with different natural oils. Four natural oils were used as coupling agents, namely hexanoic (C6), octanoic (C8), decanoic (C10) and dodecanoic (C12) acids. The mechanical, thermal and morphological properties of the resulting composites were evaluated. The usage of natural oils as coupling agents clearly improved the interfacial adhesion between wood flour and the polypropylene matrix while enhancing the mechanical and thermal properties. Better results were obtained when C8 was used. The improvement in the mechanical and thermal properties of the composites imparted by C8 is similar to that promoted by maleic anhydride-grafted polypropylene. The mechanical and thermal properties of the composites were affected by the boiling temperature and chain length of the natural oil used.

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