scholarly journals Physical Properties of Short Pineapple Leaf Fibre (PALF) Reinforced High Impact Polystyrene (HIPS) Composites

2009 ◽  
Vol 18 (1) ◽  
pp. 096369350901800 ◽  
Author(s):  
J. P. Siregar ◽  
S. M. Sapuan ◽  
Ab. Rahman ◽  
M. Zaki ◽  
H. M. D. Khairul Zaman
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Melt Flow Index ◽  
High Impact ◽  
Flow Index ◽  
Thickness Swelling ◽  
Compression Moulding ◽  
Melt Mixing ◽  
High Impact Polystyrene ◽  
Absorption Thickness

The aim of this study to investigate the physical properties of short pineapple leaf fibre (SPALF) reinforced high impact polystyrene (HIPS) composites. Three different sizes of the fibre were used in this study which was 10-40mesh, 40-60mesh and 60-80mesh. A five different fibre contents were used in this study which was 10%, 20%, 30%, 40%, and 50%. The fabricated SPALF/HIPS composites were used melt mixing and compression moulding. The physical properties of SPALF/HIPS composites such as water absorption, thickness swelling, melt flow index (MFI), and density board of composites were studied. The result showed that the addition of the SPALF was decreased the physical properties compare to pure HIPS (0% SPALF).

Compatibilization and mechanical properties of compression-molded polypropylene/high-impact polystyrene blends

2018 ◽  
Vol 34 (3) ◽  
pp. 117-127 ◽  
Author(s):  
Felipe Bier de Mello ◽  
Sonia Marli Bohrz Nachtigall ◽  
Cleia de Andrade Salles ◽  
Sandro Campos Amico
Keyword(s):  
Research Work ◽  
Melt Flow Index ◽  
Ethylene Vinyl Acetate ◽  
High Impact ◽  
Flow Index ◽  
High Impact Polystyrene ◽  
Mechanical Tensile ◽  
Styrene Butadiene ◽  
Positive Effect ◽  
Butadiene Styrene

This research work focused on polypropylene/high-impact polystyrene polymer blends. Since this blend (80/20 in weight) was incompatible, styrene–ethylene–butylene–styrene (SEBS) block copolymer, styrene–butadiene–styrene (SBS), and ethylene vinyl acetate were tested as compatibilizers (2.5 or 7.5 wt% in relation to blend). After blending via extrusion, the compositions were compression molded and their mechanical (tensile and impact), morphological (scanning electron microscopy), and rheological (melt flow index and viscosity) properties were evaluated. Blends containing SBS and 7.5 wt% of SEBS showed a positive effect regarding impact strength, although with a decrease in Young’s modulus and tensile strength. Rheological characteristics were also affected by the compatibilizers.

Studies on Thermo-Mechanical Properties of Post-Consumer High Impact Polystyrene in Five Reprocessing Steps

2002 ◽  
Vol 18 (2) ◽  
pp. 99-110 ◽  
Author(s):  
R.C. Santana ◽  
Sati Manrich
Keyword(s):  
Mechanical Properties ◽  
Mechanical Test ◽  
Complex Viscosity ◽  
Melt Flow Index ◽  
Chain Scission ◽  
Mechanical Tests ◽  
High Impact ◽  
Flow Index ◽  
Shear Stresses ◽  
High Impact Polystyrene

This study consisted of an investigation of the thermo-mechanical properties of post-consumer high impact polystyrene (HIPS) through five consecutive injection moulding steps to simulating the recycling cycles. The selectively collected HIPS residue was ground, washed only in water, dried, agglutinated and then moulded as a set of mechanical test specimens before the first step. The melt flow index (MFI), glass transition temperature (Tg), complex viscosity (η*), deflection temperature under flexural load (HDT), tensile, flexural and impact strength tests were determined at each reprocessing cycles. The results revealed that the degradative effect of consecutive recycling on the material's thermal properties was low and may be considered negligible. After five reprocessing cycles, the results showed an ∼8°C decrease of Tg in DSC, an increase of MFI, a decrease in viscosity and a slight decrease of HDT, which could be attributed to chain scission caused by consecutive cycles of exposure to shear stresses and high temperature. The material became slightly more rigid and fragile, as indicated by the mechanical tests.

scholarly journals Enhancement of mechanical, thermal and water uptake performance of TPU/jute fiber green composites via chemical treatments on fiber surface

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 133-143 ◽  
Author(s):  
Tuffaha Fathe Salem ◽  
Seha Tirkes ◽  
Alinda Oyku Akar ◽  
Umit Tayfun
Keyword(s):  
Water Absorption ◽  
Water Uptake ◽  
Mechanical Test ◽  
Fiber Surface ◽  
Melt Flow Index ◽  
Jute Fiber ◽  
Morphological Properties ◽  
Flow Index ◽  
Melt Flow ◽  
Treatment Type

AbstractChopped jute fiber (JF) surfaces were modified using alkaline, silane and eco-grade epoxy resin. Surface characteristics of jute fibers were confirmed by FTIR and EDX analyses. JF filled polyurethane elastomer (TPU) composites were prepared via extrusion process. The effect of surface modifications of JF on mechanical, thermo-mechanical, melt-flow, water uptake and morphological properties of TPU-based eco-composites were investigated by tensile and hardness tests, dynamic mechanical analysis (DMA), melt flow index (MFI) test, water absorption measurements and scanning electron microscopy (SEM) techniques, respectively. Mechanical test results showed that silane and epoxy treated JF additions led to increase in tensile strength, modulus and hardness of TPU. Glass transition temperature (Tg) of TPU rose up to higher values after JF inclusions regardless of treatment type. Si-JF filled TPU exhibited the lowest water absorption among composites. Surface treated JFs displayed homogeneous dispersion into TPU and their surface were covered by TPU according to SEM micro-photographs.

Cable and Wire Application: Adoption of Nanomagnesium Hydroxide Blended with LDPE/EVA for Mechanical and Physical Properties

2013 ◽  
Vol 701 ◽  
pp. 202-206
Author(s):  
Ahmad Aroziki Abdul Aziz ◽  
Sakinah Mohd Alauddin ◽  
Ruzitah Mohd Salleh ◽  
Mohammed Iqbal Shueb
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Melt Flow Index ◽  
Low Density Polyethylene ◽  
Flow Index ◽  
Low Density ◽  
Elongation At Break ◽  
Mechanical And Physical Properties ◽  
Poly Ethylene ◽  
Loading Amount

Effect of nanoMagnesium Hydroxide (MH) nloading amount to the mechanical and physical properties of Low Density Polyethylene (LDPE)/ Poly (ethylene-co vinyl acetate)(EVA) nanocomposite has been described and investigated in this paper. The tensile strength results show that increased amount of nanofiller will decrease and deteriorate the mechanical properties. The elongation at break decreased continuously with increasing loading of nanofiller. Generally, mechanical properties become poorer as loading amount increase. Melt Flow Index values for physical properties also provide same trend as mechanical properties results. Increase filler amount reduced MFI values whereby increased resistance to the flow.

scholarly journals In-Situ Synthesis and Property Evaluation of High-Density Polyethylene Reinforced Groundnut Shell Particulate Composite

2021 ◽  
Vol 6 (4) ◽  
pp. 305-311
Author(s):  
Abdulmumin Adebisi ◽  
Tajudeen Mojisola ◽  
Umar Shehu ◽  
Muhammed Sani Adam ◽  
Yusuf Abdulaziz
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Impact Energy ◽  
High Density Polyethylene ◽  
In Situ Synthesis ◽  
High Density ◽  
Compression Moulding ◽  
Melt Mixing ◽  
Groundnut Shell

In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP) composite with treated GSP within the range of 10-30 wt% at 10 wt% has been achieved. The adopted technique used in the production of the composite is melt mixing and compounding using two roll mills with a compression moulding machine. Properties such as hardness, tensile strength, impact energy and water absorption analysis were examined. The result revealed that addition of GSP increases the hardness value from 22.3 to 87 Hv. However, the tensile strength progressively decreased as the GSP increases in the HDPE. This trend arises due to the interaction between neighbouring reinforced particulate which appears to influence the matrix flow, thereby inducing embrittlement of the polymer matrix. It was also observed that water absorption rate steadily increased with an increase in the exposure time and the absorbed amount of water increases by increasing the wt% of the GSP. Analysing the obtained results, it was concluded that there were improvements in the hardness, tensile strength, impact energy and water absorption properties of the HDPE-GSP polymer composite when compared to unreinforced HDPE. On these premises, GSP was found as a promising reinforcement which can positively influence the HDPE properties of modern composites.

The Effect of Compatibilising Agent and Surface Modification on the Physical Properties of Short Pineapple Leaf Fibre (Palf) Reinforced High Impact Polystyrene (Hips) Composites

2009 ◽  
Vol 17 (6) ◽  
pp. 379-384 ◽  
Author(s):  
J.P. Siregar ◽  
S. M. Sapuan ◽  
M.Z.A. Rahman ◽  
H.M.D.K. Zaman
Keyword(s):  
Surface Modification ◽  
Maleic Anhydride ◽  
Physical Properties ◽  
Alkali Treatment ◽  
Fibre Surface ◽  
Natural Fibre ◽  
High Impact ◽  
High Impact Polystyrene ◽  
Poly Ethylene

The aim of this study was to investigate the effects of compatibilising agent and surface modification of short pineapple leaf fibre on physical properties of short pineapple leaf fibre reinforced high impact polystyrene (HIPS) composites. The purpose of using the compatibilising agents in this study was to modify the HIPS which include the polystyrene-block-poly(ethylene-ran-butylene)-block-poly(styrene-graft-maleic anhydride) and poly(styrene-co-maleic anhydride). Meanwhile, the alkali treatment was also used to modify the natural fibre surface of short PALF. The results have shown that adding compatibilising agent has improved the physical properties of the composites more effectively than by only using alkali treatment to modify the natural fibre surface.

Natural durability of organomodified layered silicate filled wood flour reinforced polypropylene nanocomposites

2013 ◽  
Vol 20 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Behzad Kord
Keyword(s):  
Weight Loss ◽  
Flexural Strength ◽  
Water Absorption ◽  
Wood Flour ◽  
Flexural Modulus ◽  
Layered Silicate ◽  
Natural Durability ◽  
Thickness Swelling ◽  
Melt Mixing ◽  
The Impact

AbstractThe effect of organomodified montmorillonite (OMMT) loading on the natural durability properties of polypropylene/wood flour composites exposed to brown-rot fungi (Coniophora puteana) was studied. To meet this objective, the blend composites were prepared through the melt mixing of polypropylene/wood flour at 50% weight ratios, with various amounts of OMMT (0, 3 and 6 per hundred compounds [phc]) in a hake internal mixer. The samples were then made by injection molding. The amount of coupling agent was fixed at 2 phc for all formulations. After specimen and culture medium preparation, the specimens were exposed to the purified fungus at 25°C and 75% relative humidity for 14 weeks. Identical specimens of the same composite, without being exposed to the fungus, were provided as the control specimens. After the discussed periods; weight loss, flexural strength, flexural modulus, hardness, water absorption, and thickness swelling of specimens were measured. Results indicated that OMMT had significant effects on the natural durability of the studied composite formulations. All mechanical properties were affected by the fungus, to a greater extent in the case of specimens without OMMT than the specimens with OMMT. Furthermore, the flexural strength and modulus increased with an increase of OMMT up to 3 phc and then decreased. However, the impact strength, water absorption and thickness swelling was decreased with increase of OMMT loading. Also, the lowest weight loss and the highest hardness were observed in the composite containing 6 phc organoclay. The morphology of the nanocomposites was examined by using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Morphological findings revealed that intercalation came from the sample with 3 phc concentration of OMMT, which implies the formation of intercalation morphology and better dispersion than 6 phc.

Rheological and Thermal Behaviour of High Impact Polystyrene Nanocomposite

2011 ◽  
Vol 383-390 ◽  
pp. 3849-3853 ◽  
Author(s):  
Ahmed S. AL-Ghamdi ◽  
Mohammad Yeakub Ali
Keyword(s):  
Thermal Behaviour ◽  
Multiwall Carbon Nanotubes ◽  
High Impact ◽  
Marginal Effect ◽  
Rheological Characteristics ◽  
Melt Mixing ◽  
High Impact Polystyrene ◽  
Differential Scanning Calorimeter Analysis ◽  
Mixing Method ◽  
Multiwall Carbon

This paper presents the study of rheological and thermal behaviour of high impact polystyrene/multiwall carbon nanotubes (HIPS/MWCNTs) nanocomposite. The nanocomposite was prepared via melt mixing method. The influence of different loadings of MWCNTs on the HIPS viscosity and other rheological characteristics were analyzed experimentally. Other rheological characteristics were studied using dynamic analysis of viscosity through rotational rehometer. Glass transition temperature (Tg) were also investigated using non-isothermal differential scanning calorimeter analysis. The viscosity was found to be directly proportional to MWCNTs’ loading, up to five times the value of pure HIPS at loading level of 7.5wt% of MWCNTs. The MWCNTs loading demonstrated a marginal effect (1-2%) on the Tg.

Effect of Particle Size on Some Properties of Rice Husk Particleboard

2007 ◽  
Vol 18-19 ◽  
pp. 43-48 ◽  
Author(s):  
J.O. Osarenmwinda ◽  
J.C. Nwachukwu
Keyword(s):  
Particle Size ◽  
Physical Properties ◽  
Water Absorption ◽  
Rice Husk ◽  
Modulus Of Elasticity ◽  
Internal Bond ◽  
Elasticity Modulus ◽  
Modulus Of Rupture ◽  
Thickness Swelling ◽  
Effect Of Particle Size

The purpose of this study was to determine the effect of particle size on the mechanical properties (Modulus of Elasticity, Modulus of Rupture, and Internal Bond) and physical properties (thickness swelling and water absorption) of rice husk particleboard. The particle sizes used were 1.0mm, 1.18mm, 2mm, 2.36mm and 2.80mm. Each was mixed with a constant resin (urea formaldehyde) concentration of 20% of oven dry weight of rice husk particles. The results showed that as the particle size increased, the particleboard’s mechanical and physical properties decreased. For example, the modulus of elasticity, modulus of rupture, internal bond, thickness swelling and water absorption for 1.0mm particle size particleboard were 1590N/mm2, 11.11N/mm2, 0.28N/mm2,10.90% and 38.53% respectively, while for 2.8mm particle size they were 1958N/mm2,14.2N/mm2, 0.44N/mm2, 11.51% and 47.21% respectively. Overall results showed that particleboard made from rice husk exceed the EN standard for modulus of elasticity, modulus of rupture, internal bond. However, thickness swelling values were poor. Hence, the smaller the particle size the better the properties of the particleboard.

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