Rheological and mechanical properties of polypropylene/grape skin fiber composites

2021 ◽  
pp. 089270572110530
Author(s):  
Pankaj Agrawal ◽  
Priscila A Lima ◽  
Shirley N Cavalcanti ◽  
Moacy P Silva ◽  
Daniel MG Freitas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix Composites ◽  
Natural Fibers ◽  
Matrix Composites ◽  
Capillary Rheometry ◽  
Grape Skin ◽  
Low Frequencies ◽  
Rheological Measurement ◽  
Measurement Results ◽  
The Impact

The use of natural fibers as fillers in polymer matrix composites is an alternative for reusing the fruit wastes that originated from the food industry. This work aimed to evaluate the effect of grape skin fiber (GSF) on the rheological and mechanical properties of polypropylene/GSF (PP/GSF) composites. The composites were prepared by extrusion followed by injection molding and characterized by rheological, morphological, and mechanical properties. Rheological measurement results showed an increase in viscosity at low frequencies. The relaxation time of the PP/GSF composites increased by about 415% with the increase in the GSF content from 1 to 3 phr. Capillary rheometry results indicated that the processability of PP was not compromised with the addition of GSF. Morphology analysis by scanning electron microscopy (SEM) indicated a good interaction between the PP matrix and GSF and a good dispersion/distribution of the fibers in the PP matrix. The impact strength decreased by about 14 and 17% with the addition of 1 and 3 phr, respectively, of GSF to PP whereas the elastic modulus remained almost unchanged.

scholarly journals Role of Wood Flour on Physical and Mechanical Properties in Polymer Matrix Composites-A Critical Review

2021 ◽  
Vol 31 (2) ◽  
pp. 81-92
Author(s):  
Lalit Ranakoti ◽  
Pawan Kumar Rakesh ◽  
Brijesh Gangil
Keyword(s):  
Mechanical Properties ◽  
Polymer Composite ◽  
Material Science ◽  
Polymer Matrix Composites ◽  
Wood Flour ◽  
Natural Fibers ◽  
Physical And Mechanical Properties ◽  
Critical Parameters ◽  
Matrix Composites

Green and sustainable material is the utmost prerequisite for the advancement of a healthy society and fulfilling the necessary for the improvement in material science. Naturally obtaining wood flour has the competence to be reinforced as a filler substance in the polymer composite. The present article deals with the usage of wood flour as a filler in the polymer composite. The article comprises properties, characteristics, occurrence, the structure of wood, and the techniques implemented in the manufacturing of wood flour polymer composites. In addition, critical parameters and causes that can bring changes in the properties like tensile, flexural, impact and hardness of polymers are also discussed with the addition of wood flour alone and with nanoparticles. The advantages of using wood flour as a filler in the thermoset and thermoplastic polymers discussed, and its hybridization with various natural fibers was also discussed in the present study.

The Effects of a Compatibilizer for Improving Mechanical Properties on Polymer Matrix Composites

2021 ◽  
Vol 877 ◽  
pp. 3-8
Author(s):  
Prathumrat Nuyang ◽  
Atiwat Wiriya-Amornchai ◽  
Watthanaphon Cheewawuttipong
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Young’S Modulus ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Fine Powder ◽  
Matrix Composites ◽  
Elongation At Break ◽  
The Impact

The effect of compatibilizer agent was studied when adding Aluminum fine powder (Al) to reinforce in Polypropylene (PP) by compared between polymer matrix composites (PMCs) and PMCs added Polypropylene graft maleic anhydride (PP-g-MAH).The average particle size of the aluminum fine powder was around 75 μm filled in polypropylene with different proportions of 2.5, 5, 7.5 and 10wt%. PMCs were prepared using the internal mixer. The results found that when the amount of aluminum fine powder increased, the mechanical properties had changed, i.e., tensile strength, and Young’s Modulus increased, while the impact strength and elongation at break decreased. But, when adding compatibilizer 1wt% it was found that the trend of tensile strength, and Young’s Modulus increased that compared with non-compatibilizer, but the impact strength and elongation at break decreased. The part of the morphology of PMCs with non-compatibilizer was found that the particle of aluminum fine powder dispersed in the matrix phase, but there were many microvoids between filler and matrix. But, PMCs with compatibilizer caused the microvoids between filler and matrix to be reduced.

scholarly journals Effect of Fiber Loading on Mechanical and Physical Properties of Uniaxial Long Kenaf Bast Fiber Reinforced Epoxy Composites

2019 ◽  
Vol 8 (4) ◽  
pp. 12224-12229
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Natural Fiber ◽  
Polymer Matrix Composites ◽  
Natural Fibers ◽  
Fiber Reinforced Polymer ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Fiber Loading ◽  
Reinforced Polymer

In the recent years, due to environmental awareness of general public, researchers and scientists directed towards the use of natural fibers reinforced composites as environmentally friendly. Now a days, many scientists, researchers and engineers have explored the extraction, properties and utilization of natural fibers as economically and effectively as possible to produce good quality natural fiber reinforced polymer matrix composites. Many scientists and researchers proved that increase in fiber loading resulted in increased mechanical properties of the composite material. This will be the basis to develop and to evaluate properties of natural fiber reinforced polymer matrix composites. In this research, Kenaf long fiber reinforced epoxy matrix composites were successfully fabricated by simple and cost effective hand layup technique and their mechanical properties such as tensile strength, bending strength, impact strength, hardness with different fiber loading were successfully investigated. Water absorption capacity was also reported. The fibers are treated with NaoH solution for surface modification and to improve mechanical properties. The specimens are prepared according to ASTM standard and experiments were carried out

Effects of the Mould Pressure and Mould Pressing Time on the Properties of Graphite/Phenolic Resin Composites

2013 ◽  
Vol 706-708 ◽  
pp. 95-98
Author(s):  
Mi Dan Li ◽  
Dong Mei Liu ◽  
Lu Lu Feng ◽  
Huan Niu ◽  
Yao Lu
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Flexural Strength ◽  
Polymer Matrix ◽  
Phenolic Resin ◽  
Polymer Matrix Composites ◽  
Resin Composites ◽  
Matrix Composites ◽  
Natural Graphite ◽  
Pressing Time

Polymer matrix composites made from phenolic resin are filled with natural graphite powders. They are fabricated by compression molding technique. The density, electrical conductivity and flexural strength of composite are analyzed to determine the influences of mould pressure and mould pressing time on the physical, electrical and mechanical properties of composite. It is found that the density, electrical conductivity and flexural strength of composites increased with increasing mould pressure. Under pressure of 40 MPa for 60 min, the density, electrical conductivity and flexural strength of composites were 1.85 g/cm3, 4.35  103 S/cm and 70 MPa, respectively. The decreased gaps could be the main reason for the increasing of density, electrical conductivity and flexural strength as mould pressure increases. The results also show that the density of composites increased with increasing mould pressing time.

scholarly journals Utilization of Leather Waste Fibers in Polymer Matrix Composites Based on Acrylonitrile-Butadiene Rubber

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 117
Author(s):  
Le Thuy Hang ◽  
Do Quoc Viet ◽  
Nguyen Pham Duy Linh ◽  
Vu Anh Doan ◽  
Hai-Linh Thi Dang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polymer Matrix Composites ◽  
Waste Product ◽  
Dynamic Mechanical Properties ◽  
Hammer Mill ◽  
Butadiene Rubber ◽  
Matrix Composites ◽  
Leather Industry ◽  
Tear Strength

In this study, we present the fabrication of nitrile butadiene rubber/waste leather fiber (NBR/WLF) composites with different weight percentages of WLF and NBR (0/100, 20/80, 30/70, 40/60, 50/50, 60/40 wt/wt). WLF was prepared by cutting the scrap leathers from the waste product of the Vietnamese leather industry. Subsequently, in order to make the short fibers, it was mixed by a hammer mill. The characteristics of WLF/NBR composites such as mechanical properties (tensile strength, tear strength, hardness), dynamic mechanical properties, toluene absorption, and morphology were carefully evaluated. As a result, the tensile strength and tear strength become larger with increasing WLF content from 0 to 50 wt% and they decrease when further increasing WLF content. The highest tensile strength of 12.5 MPa and tear strength of 72.47 N/mm were achieved with the WLF/NBR ratio of 50/50 wt%. Both hardness and resistance of the developed materials with toluene increased with increasing WLF content. The SEM results showed a good adhesion of NBR matrix and the WLF. The increasing of storage modulus (E’) in comparison with raw NBR showed good compatibility between WLF and NBR matrix. This research showed that the recycled material from waste leather and NBR was successfully prepared and has great potential for manufacturing products such as floor covering courts and playgrounds, etc.

scholarly journals Effect of Natural Fiber (NF) Mix on Mechanical Strength of NF Plastic Composites (NFPC)

2019 ◽  
Vol 9 (1) ◽  
pp. 5663-5667
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Natural Fiber ◽  
Fiber Type ◽  
Natural Fibers ◽  
Natural Fibre ◽  
Additional Advantage ◽  
Plastic Composites ◽  
Twin Screw ◽  
The Impact

Natural fibers from plants are gaining importance and may substitute wood in the production of wood plastic composites (WPC). To ensure continuity of fiber supply and sustainability of WPC industries, fibers of various types could be mixed together to obtain Mix WPC. However, research need to be carried out to identify the contribution of different fiber type collectively to the mechanical properties of Mix natural fiber polymer composite (NFPC). In this study, preliminary work on the use of natural fibre (NF) such as kenaf, sugar palm and pineapple leaf fibers in the preparation of Mix NFPC were carried out. Four different fiber mix samples with different fiber ratio and size were formulated using polypropylene (PP) as the polymer matrix. Montmorrilonite (MMT) filler was added at constant amount for enhancement of composite mechanical properties. Samples were mixed and prepared using a twin screw extruder and mini injection moulding resepectively. Individual fibers and NFPC prepared were characterized using thermogravimetric analyzer (TGA). Tensile, flexural and impact strength of the composites were determined. Generally, it was found that addition of fiber mix at 50% fiber loading enhance the tensile and flexural strength of the various NFPC with minimal exceptions. The impact strength of the composites were comparable to that of blank PP implying that addition of fiber gives additional advantage besides being eco-friendly. It was also found that higher kenaf loading and different size of fiber mix contribute positively to the various strengths measured. In addition to that, composition of individual fibers also contribute to the mechanical properties of the NFPCs

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